Added initial code commit

.gitignore

@@ -1,7 +1,10 @@
 ## Ignore Visual Studio temporary files, build results, and
 ## files generated by popular Visual Studio add-ons.
+##
+## Get latest from https://github.com/github/gitignore/blob/main/VisualStudio.gitignore
 
 # User-specific files
+*.rsuser
 *.suo
 *.user
 *.userosscache
@@ -10,6 +13,9 @@
 # User-specific files (MonoDevelop/Xamarin Studio)
 *.userprefs
 
+# Mono auto generated files
+mono_crash.*
+
 # Build results
 [Dd]ebug/
 [Dd]ebugPublic/
@@ -17,42 +23,62 @@
 [Rr]eleases/
 x64/
 x86/
+[Ww][Ii][Nn]32/
+[Aa][Rr][Mm]/
+[Aa][Rr][Mm]64/
 bld/
 [Bb]in/
 [Oo]bj/
 [Ll]og/
+[Ll]ogs/
 
-# Visual Studio 2015 cache/options directory
+# Visual Studio 2015/2017 cache/options directory
 .vs/
 # Uncomment if you have tasks that create the project's static files in wwwroot
 #wwwroot/
 
+# Visual Studio 2017 auto generated files
+Generated\ Files/
+
 # MSTest test Results
 [Tt]est[Rr]esult*/
 [Bb]uild[Ll]og.*
 
-# NUNIT
+# NUnit
 *.VisualState.xml
 TestResult.xml
+nunit-*.xml
 
 # Build Results of an ATL Project
 [Dd]ebugPS/
 [Rr]eleasePS/
 dlldata.c
 
-# DNX
+# Benchmark Results
+BenchmarkDotNet.Artifacts/
+
+# .NET Core
 project.lock.json
 project.fragment.lock.json
 artifacts/
 
+# ASP.NET Scaffolding
+ScaffoldingReadMe.txt
+
+# StyleCop
+StyleCopReport.xml
+
+# Files built by Visual Studio
 *_i.c
 *_p.c
-*_i.h
+*_h.h
 *.ilk
 *.meta
 *.obj
+*.iobj
 *.pch
 *.pdb
+*.ipdb
 *.pgc
 *.pgd
 *.rsp
@@ -62,7 +88,9 @@ artifacts/
 *.tlh
 *.tmp
 *.tmp_proj
+*_wpftmp.csproj
 *.log
+*.tlog
 *.vspscc
 *.vssscc
 .builds
@@ -90,6 +118,9 @@ ipch/
 *.vspx
 *.sap
 
+# Visual Studio Trace Files
+*.e2e
+
 # TFS 2012 Local Workspace
 $tf/
 
@@ -101,15 +132,25 @@ _ReSharper*/
 *.[Rr]e[Ss]harper
 *.DotSettings.user
 
-# JustCode is a .NET coding add-in
-.JustCode
-
 # TeamCity is a build add-in
 _TeamCity*
 
 # DotCover is a Code Coverage Tool
 *.dotCover
 
+# AxoCover is a Code Coverage Tool
+.axoCover/*
+!.axoCover/settings.json
+
+# Coverlet is a free, cross platform Code Coverage Tool
+coverage*.json
+coverage*.xml
+coverage*.info
+
+# Visual Studio code coverage results
+*.coverage
+*.coveragexml
+
 # NCrunch
 _NCrunch_*
 .*crunch*.local.xml
@@ -141,9 +182,9 @@ publish/
 # Publish Web Output
 *.[Pp]ublish.xml
 *.azurePubxml
-# TODO: Comment the next line if you want to checkin your web deploy settings
+# Note: Comment the next line if you want to checkin your web deploy settings,
 # but database connection strings (with potential passwords) will be unencrypted
-#*.pubxml
+*.pubxml
 *.publishproj
 
 # Microsoft Azure Web App publish settings. Comment the next line if you want to
@@ -153,13 +194,15 @@ PublishScripts/
 
 # NuGet Packages
 *.nupkg
+# NuGet Symbol Packages
+*.snupkg
 # The packages folder can be ignored because of Package Restore
-**/packages/*
+**/[Pp]ackages/*
 # except build/, which is used as an MSBuild target.
-!**/packages/build/
+!**/[Pp]ackages/build/
 # Uncomment if necessary however generally it will be regenerated when needed
-#!**/packages/repositories.config
+#!**/[Pp]ackages/repositories.config
-# NuGet v3's project.json files produces more ignoreable files
+# NuGet v3's project.json files produces more ignorable files
 *.nuget.props
 *.nuget.targets
 
@@ -176,12 +219,15 @@ AppPackages/
 BundleArtifacts/
 Package.StoreAssociation.xml
 _pkginfo.txt
+*.appx
+*.appxbundle
+*.appxupload
 
 # Visual Studio cache files
 # files ending in .cache can be ignored
 *.[Cc]ache
 # but keep track of directories ending in .cache
-!*.[Cc]ache/
+!?*.[Cc]ache/
 
 # Others
 ClientBin/
@@ -192,9 +238,12 @@ ClientBin/
 *.jfm
 *.pfx
 *.publishsettings
-node_modules/
 orleans.codegen.cs
 
+# Including strong name files can present a security risk
+# (https://github.com/github/gitignore/pull/2483#issue-259490424)
+#*.snk
+
 # Since there are multiple workflows, uncomment next line to ignore bower_components
 # (https://github.com/github/gitignore/pull/1529#issuecomment-104372622)
 #bower_components/
@@ -209,15 +258,22 @@ _UpgradeReport_Files/
 Backup*/
 UpgradeLog*.XML
 UpgradeLog*.htm
+ServiceFabricBackup/
+*.rptproj.bak
 
 # SQL Server files
 *.mdf
 *.ldf
+*.ndf
 
 # Business Intelligence projects
 *.rdl.data
 *.bim.layout
 *.bim_*.settings
+*.rptproj.rsuser
+*- [Bb]ackup.rdl
+*- [Bb]ackup ([0-9]).rdl
+*- [Bb]ackup ([0-9][0-9]).rdl
 
 # Microsoft Fakes
 FakesAssemblies/
@@ -227,6 +283,7 @@ FakesAssemblies/
 
 # Node.js Tools for Visual Studio
 .ntvs_analysis.dat
+node_modules/
 
 # Visual Studio 6 build log
 *.plg
@@ -234,6 +291,20 @@ FakesAssemblies/
 # Visual Studio 6 workspace options file
 *.opt
 
+# Visual Studio 6 auto-generated workspace file (contains which files were open etc.)
+*.vbw
+
+# Visual Studio 6 auto-generated project file (contains which files were open etc.)
+*.vbp
+
+# Visual Studio 6 workspace and project file (working project files containing files to include in project)
+*.dsw
+*.dsp
+
+# Visual Studio 6 technical files
+*.ncb
+*.aps
+
 # Visual Studio LightSwitch build output
 **/*.HTMLClient/GeneratedArtifacts
 **/*.DesktopClient/GeneratedArtifacts
@@ -249,13 +320,79 @@ paket-files/
 # FAKE - F# Make
 .fake/
 
-# JetBrains Rider
+# CodeRush personal settings
-.idea/
+.cr/personal
-*.sln.iml
-
-# CodeRush
-.cr/
 
 # Python Tools for Visual Studio (PTVS)
 __pycache__/
-*.pyc
+*.pyc
+
+# Cake - Uncomment if you are using it
+# tools/**
+# !tools/packages.config
+
+# Tabs Studio
+*.tss
+
+# Telerik's JustMock configuration file
+*.jmconfig
+
+# BizTalk build output
+*.btp.cs
+*.btm.cs
+*.odx.cs
+*.xsd.cs
+
+# OpenCover UI analysis results
+OpenCover/
+
+# Azure Stream Analytics local run output
+ASALocalRun/
+
+# MSBuild Binary and Structured Log
+*.binlog
+
+# NVidia Nsight GPU debugger configuration file
+*.nvuser
+
+# MFractors (Xamarin productivity tool) working folder
+.mfractor/
+
+# Local History for Visual Studio
+.localhistory/
+
+# Visual Studio History (VSHistory) files
+.vshistory/
+
+# BeatPulse healthcheck temp database
+healthchecksdb
+
+# Backup folder for Package Reference Convert tool in Visual Studio 2017
+MigrationBackup/
+
+# Ionide (cross platform F# VS Code tools) working folder
+.ionide/
+
+# Fody - auto-generated XML schema
+FodyWeavers.xsd
+
+# VS Code files for those working on multiple tools
+.vscode/*
+!.vscode/settings.json
+!.vscode/tasks.json
+!.vscode/launch.json
+!.vscode/extensions.json
+*.code-workspace
+
+# Local History for Visual Studio Code
+.history/
+
+# Windows Installer files from build outputs
+*.cab
+*.msi
+*.msix
+*.msm
+*.msp
+
+# JetBrains Rider
+*.sln.iml

ChessPanel/Chess.csproj

@@ -47,6 +47,7 @@
     <Reference Include="WindowsBase" />
   </ItemGroup>
   <ItemGroup>
+    <Compile Include="Pieces\Bishop.cs" />
     <Compile Include="ChessGame.cs">
       <SubType>Component</SubType>
     </Compile>
@@ -57,13 +58,18 @@
       <SubType>Component</SubType>
     </Compile>
     <Compile Include="FieldColorSet.cs" />
+    <Compile Include="Grid.cs" />
+    <Compile Include="Pieces\King.cs" />
+    <Compile Include="Pieces\Knight.cs" />
     <Compile Include="MainForm.cs">
       <SubType>Form</SubType>
     </Compile>
     <Compile Include="MainForm.Designer.cs">
       <DependentUpon>MainForm.cs</DependentUpon>
     </Compile>
-    <Compile Include="Piece.cs" />
+    <Compile Include="Pieces\Pawn.cs" />
+    <Compile Include="Pieces\AbstractPiece.cs" />
+    <Compile Include="Pieces\Rook.cs" />
     <Compile Include="Program.cs" />
     <Compile Include="Properties\AssemblyInfo.cs" />
     <Compile Include="Properties\Resources.Designer.cs">
@@ -71,6 +77,10 @@
       <DesignTime>True</DesignTime>
       <DependentUpon>Resources.resx</DependentUpon>
     </Compile>
+    <Compile Include="Pieces\Queen.cs" />
+    <EmbeddedResource Include="ChessGame.resx">
+      <DependentUpon>ChessGame.cs</DependentUpon>
+    </EmbeddedResource>
     <EmbeddedResource Include="MainForm.resx">
       <DependentUpon>MainForm.cs</DependentUpon>
     </EmbeddedResource>
@@ -78,7 +88,6 @@
       <Generator>PublicResXFileCodeGenerator</Generator>
       <LastGenOutput>Resources.Designer.cs</LastGenOutput>
     </EmbeddedResource>
-    <None Include="ClassDiagram.cd" />
   </ItemGroup>
   <ItemGroup>
     <None Include="App.config" />

ChessPanel/ChessBoard.cs

@@ -1,6 +1,8 @@
 using Chess;
 using System;
 using System.Collections.Generic;
+using System.ComponentModel;
+using System.Linq;
 using System.Windows;
 using System.Windows.Forms;
 using static Chess.Piece;
@@ -9,34 +11,53 @@ namespace ChessPanel
 {
     public partial class ChessBoard : Panel
     {
-        public Field[,] fields;
+        private BackgroundWorker BGWorker = new BackgroundWorker();
+        public Grid fields;
+        public List<Piece> pieces;
+
         public PieceColor activePlayer;
-        private int gridSize = 8;
+        private int GRID_SIZE = 8;
         public bool isSaved = true;
-        Dictionary<Vector, PieceTeam> validTargetSpots = new Dictionary<Vector, PieceTeam>();
+        Dictionary<Field, PieceTeam> SelectedPieceTargetSpots = new Dictionary<Field, PieceTeam>();
-        private Vector? selectedField;
+        //private Vector? selectedField;
-        private Vector? SelectedField
+        //private Vector? SelectedField
+        //{
+        //    get { return selectedField; }
+        //    set { selectedField = value; HighlightValidTargetSpots(); }
+        //}
+        private Field selectedField;
+
+        private Field SelectedField
         {
             get { return selectedField; }
             set { selectedField = value; HighlightValidTargetSpots(); }
         }
+        private bool FieldIsSelected
+        {
+            get { return selectedField != null; }
+        }
+
         private void HighlightValidTargetSpots()
         {
-            if (selectedField.HasValue && fields[(int)selectedField.Value.X, (int)selectedField.Value.Y].CurrentPiece != null) // Wenn das neu ausgewählte Feld eine Figur enthält, wird diese ausgewählt
+            if (FieldIsSelected && selectedField.CurrentPiece != null) // Wenn das neu ausgewählte Feld eine Figur enthält, wird diese ausgewählt
             {
-                fields[(int)selectedField.Value.X, (int)selectedField.Value.Y].Select();
+                selectedField.Select();
             }
             ResetValidTargetSpots();
-            if (selectedField.HasValue)
+            if (FieldIsSelected)
             {
-                if (fields[(int)selectedField.Value.X, (int)selectedField.Value.Y].CurrentPiece != null)
+                if (selectedField.CurrentPiece != null)
                 {
-                    validTargetSpots = fields[(int)selectedField.Value.X, (int)selectedField.Value.Y].CurrentPiece.GetValidTargetFields(fields, new Vector(selectedField.Value.X, selectedField.Value.Y));
+                    //SelectedPieceTargetSpots = selectedField.CurrentPiece.GetValidTargetFields(fields);
-                }
+                    SelectedPieceTargetSpots = selectedField.CurrentPiece.validTargetSpots;
-                foreach (var item in validTargetSpots)
+                    if (SelectedPieceTargetSpots == null)
-                {
+                        SelectedPieceTargetSpots = selectedField.CurrentPiece.GetValidTargetFields(fields);
-                    fields[(int)item.Key.X, (int)item.Key.Y].Highlight(item.Value);
                 }
+                if (SelectedPieceTargetSpots != null)
+                    foreach (var TargetSpot in SelectedPieceTargetSpots)
+                    {
+                        TargetSpot.Key.Highlight(TargetSpot.Value);
+                    }
             }
         }
         /// <summary>
@@ -44,119 +65,177 @@ namespace ChessPanel
         /// </summary>
         private void ResetValidTargetSpots()
         {
-            foreach (var item in validTargetSpots)
+            foreach (var validTarget in SelectedPieceTargetSpots)
             {
-                fields[(int)item.Key.X, (int)item.Key.Y].Deselect();
+                validTarget.Key.Deselect();
             }
-            validTargetSpots.Clear(); // Markierung der Zielfelder zurücksetzen
+            SelectedPieceTargetSpots.Clear(); // Markierung der Zielfelder zurücksetzen
         }
         public int GridSize
         {
-            get { return gridSize; }
+            get { return GRID_SIZE; }
-            set { gridSize = value; }
+            set { GRID_SIZE = value; }
         }
         public ChessBoard()
         {
             this.DoubleBuffered = true;
             this.SuspendLayout();
             this.Resize += new System.EventHandler(this.ChessBoard_Resize);
+            // this.validTargetSpotCalculator.WorkerReportsProgress = true;// Progress
+            BGWorker.WorkerSupportsCancellation = true;
+            this.BGWorker.RunWorkerCompleted += ValidTargetSpotCalculator_RunWorkerCompleted;
+            this.BGWorker.DoWork += ValidTargetSpotCalculator_DoWork;
+            BeginTargetFieldCalculation();
             InitializeGrid();
             InitializePieces();
             activePlayer = PieceColor.White;
             this.ResumeLayout(false);
         }
+
+        private void ValidTargetSpotCalculator_DoWork(object sender, DoWorkEventArgs e)
+        {
+            BGWorkerData data = e.Argument as BGWorkerData;
+            List<Piece> ActivePlayerPieces = data.pieces.Where(i => i.color == data.color).ToList();
+            int total = ActivePlayerPieces.Count;
+            int count = 0;
+            foreach (var piece in ActivePlayerPieces)
+            {
+                if (BGWorker.CancellationPending)
+                {
+                    e.Cancel = true;
+                    return;
+                }
+                piece.RefreshValidTargetSpots(data.fields);
+                //  validTargetSpotCalculator.ReportProgress((int)Math.Floor((float)(++count) / (float)total * 100f)); // Progress
+            }
+        }
+
+        private void ValidTargetSpotCalculator_RunWorkerCompleted(object sender, RunWorkerCompletedEventArgs e)
+        {
+            throw new NotImplementedException();
+        }
+
         private void ToggleActivePlayer() => activePlayer = activePlayer == PieceColor.White ? PieceColor.Black : PieceColor.White;
-        private void DoPieceMove(Vector location, Vector newLocation, bool togglePlayer = true)
+        private void DoPieceMove(Field PieceField, Field newPieceField, bool togglePlayer = true, bool skipValidTargetFieldCalculation = false)
         {
             isSaved = false;
             #region Castling
-            if (fields[(int)location.X, (int)location.Y].CurrentPiece.type == PieceType.King && Math.Abs(newLocation.X - location.X) == 2)
+            if (PieceField.CurrentPiece.type == PieceType.King && Math.Abs(newPieceField.location.X - PieceField.location.X) == 2)
-                DoPieceMove(new Vector(((newLocation.X - location.X == -2) ? 0 : 7), location.Y), new Vector(location.X + (newLocation.X - location.X) / 2, location.Y), false /*Dont Toggle Player*/); // Move Rook 
+                DoPieceMove(fields[((newPieceField.location.X - PieceField.location.X == -2) ? 0 : 7), PieceField.location.Y], fields[PieceField.location.X + (newPieceField.location.X - PieceField.location.X) / 2, PieceField.location.Y], false /*Dont Toggle Player*/, true); // Move Rook 
             #endregion
             #region EnPassant     
-            foreach (var item in fields) // Reset Enpassant Possible states each move
+            foreach (Piece item in pieces.Where(i => i.type == PieceType.Pawn)) // Reset Enpassant Possible states each move
-            {
+                item.EnPassantPossible = false;
-                if (item.CurrentPiece != null)
+            if (PieceField.CurrentPiece.type == PieceType.Pawn && !PieceField.CurrentPiece.HasMoved)
-                    if (item.CurrentPiece.type == PieceType.Pawn)
+                PieceField.CurrentPiece.EnPassantPossible = true;
-                    {
+            if (PieceField.CurrentPiece.type == PieceType.Pawn && newPieceField.location.X != PieceField.location.X && newPieceField.IsEmpty)
-                        item.CurrentPiece.EnPassantPossible = false;
+                fields[newPieceField.location, 0, (PieceField.CurrentPiece.color == PieceColor.White ? 1 : -1)].CurrentPiece = null;
-                    }
-            }
-            if (fields[(int)location.X, (int)location.Y].CurrentPiece.type == PieceType.Pawn && !fields[(int)location.X, (int)location.Y].CurrentPiece.HasMoved)
-                fields[(int)location.X, (int)location.Y].CurrentPiece.EnPassantPossible = true;
-            if (fields[(int)location.X, (int)location.Y].CurrentPiece.type == PieceType.Pawn && newLocation.X != location.X && fields[(int)newLocation.X, (int)newLocation.Y].IsEmpty)
-                fields[(int)newLocation.X, (int)newLocation.Y + (fields[(int)location.X, (int)location.Y].CurrentPiece.color == PieceColor.White ? 1 : -1)].CurrentPiece = null;
             #endregion
-            fields[(int)location.X, (int)location.Y].CurrentPiece.HasMoved = true; // Figur Bereits bewegt Status aktualisieren
+            PieceField.CurrentPiece.Move(newPieceField);
-            fields[(int)newLocation.X, (int)newLocation.Y].CurrentPiece = fields[(int)location.X, (int)location.Y].CurrentPiece; // Figur an neue Position kopieren
+            //PieceField.CurrentPiece.HasMoved = true; // Figur Bereits bewegt Status aktualisieren
-            fields[(int)location.X, (int)location.Y].CurrentPiece = null; // Alte Kopie der Figur löschen
+            //newPieceField.CurrentPiece = PieceField.CurrentPiece; // Figur an neue Position kopieren
+            //PieceField.CurrentPiece = null; // Alte Kopie der Figur löschen
             if (togglePlayer)
                 ToggleActivePlayer();
+            if (skipValidTargetFieldCalculation) BeginTargetFieldCalculation();
         }
+
+        class BGWorkerData
+        {
+            public BGWorkerData(PieceColor color, List<Piece> pieces, Grid fields)
+            {
+                this.color = color;
+                this.pieces = pieces;
+                this.fields = fields;
+            }
+            public PieceColor color;
+            public List<Piece> pieces;
+            public Grid fields;
+        }
+
+        private void BeginTargetFieldCalculation()
+        {
+            if (BGWorker.WorkerSupportsCancellation)
+                BGWorker.CancelAsync();
+            else
+                BGWorker.RunWorkerAsync(new BGWorkerData(activePlayer, pieces, fields));
+        }
+
         private void InitializePieces()
         {
-            fields[0, 0].CurrentPiece = new Rook(PieceColor.Black);
+            pieces = new List<Piece>
-            fields[7, 0].CurrentPiece = new Rook(PieceColor.Black);
+            {
-            fields[0, 7].CurrentPiece = new Rook(PieceColor.White);
+                new Rook(PieceColor.Black, new Vector(0, 0), fields),
-            fields[7, 7].CurrentPiece = new Rook(PieceColor.White);
+                new Rook(PieceColor.Black, new Vector(7, 0), fields),
+                new Rook(PieceColor.White, new Vector(0, 7), fields),
+                new Rook(PieceColor.White, new Vector(7, 7), fields),
 
-            fields[1, 0].CurrentPiece = new Knight(PieceColor.Black);
+                new Knight(PieceColor.Black, new Vector(1, 0), fields),
-            fields[6, 0].CurrentPiece = new Knight(PieceColor.Black);
+                new Knight(PieceColor.Black, new Vector(6, 0), fields),
-            fields[1, 7].CurrentPiece = new Knight(PieceColor.White);
+                new Knight(PieceColor.White, new Vector(1, 7), fields),
-            fields[6, 7].CurrentPiece = new Knight(PieceColor.White);
+                new Knight(PieceColor.White, new Vector(6, 7), fields),
 
-            fields[2, 0].CurrentPiece = new Bishop(PieceColor.Black);
+                new Bishop(PieceColor.Black, new Vector(2, 0), fields),
-            fields[5, 0].CurrentPiece = new Bishop(PieceColor.Black);
+                new Bishop(PieceColor.Black, new Vector(5, 0), fields),
-            fields[2, 7].CurrentPiece = new Bishop(PieceColor.White);
+                new Bishop(PieceColor.White, new Vector(2, 7), fields),
-            fields[5, 7].CurrentPiece = new Bishop(PieceColor.White);
+                new Bishop(PieceColor.White, new Vector(5, 7),fields),
+                new King(PieceColor.Black, new Vector(4, 0), fields),
+                new Queen(PieceColor.Black, new Vector(3, 0), fields),
 
-            fields[4, 0].CurrentPiece = new King(PieceColor.Black);
+                new Queen(PieceColor.White, new Vector(3, 7), fields),
-            fields[3, 0].CurrentPiece = new Queen(PieceColor.Black);
+                new King(PieceColor.White, new Vector(4, 7), fields)
+            };
 
-            fields[3, 7].CurrentPiece = new Queen(PieceColor.White);
-            fields[4, 7].CurrentPiece = new King(PieceColor.White);
             for (int x = 0; x < 8; x++)
             {
-                fields[x, 1].CurrentPiece = new Pawn(PieceColor.Black);
+                pieces.Add(new Pawn(PieceColor.Black, new Vector(x, 1), fields));
-                fields[x, 6].CurrentPiece = new Pawn(PieceColor.White);
+                pieces.Add(new Pawn(PieceColor.White, new Vector(x, 6), fields));
+            }
+
+
+            foreach (Field field in fields)
+            {
+                field.RefreshPiece();
             }
         }
         private void InitializeGrid()
         {
-            this.fields = new Field[gridSize, gridSize];
+            this.fields = new Grid(GRID_SIZE);
-            int subPanelEdgeLength = Math.Min(this.Size.Width, this.Size.Height) / gridSize;
+            int subPanelEdgeLength = Math.Min(this.Size.Width, this.Size.Height) / GRID_SIZE;
             System.Drawing.Size subPanelSize = new System.Drawing.Size(subPanelEdgeLength, subPanelEdgeLength);
-            for (int x = 0; x < this.gridSize; x++)
+            for (int x = 0; x < this.GRID_SIZE; x++)
             {
-                for (int y = 0; y < this.gridSize; y++)
+                for (int y = 0; y < this.GRID_SIZE; y++)
                 {
-                    Field field = new Field(x, y);
+                    Field field = new Field(x, y)
-                    field.Size = subPanelSize;
+                    {
-                    field.Location = new System.Drawing.Point(x * subPanelSize.Width, y * subPanelSize.Height);
+                        Size = subPanelSize,
+                        Location = new System.Drawing.Point(x * subPanelSize.Width, y * subPanelSize.Height)
+                    };
                     field.FieldClick += FieldClicked;
                     fields[x, y] = field;
                     this.Controls.Add(fields[x, y]);
                 }
             }
         }
-        private void FieldClicked(Vector coordinates)
+        private void FieldClicked(Field sender)
         {
             this.SuspendLayout();
-            if (SelectedField.HasValue && validTargetSpots.ContainsKey(coordinates)) // Ein erlaubtes Zielfeld wurde angeklickt
+            if (FieldIsSelected && SelectedPieceTargetSpots.ContainsKey(sender)) // Ein erlaubtes Zielfeld wurde angeklickt
             {
-                DoPieceMove(SelectedField.Value, coordinates); // Bewege Figur
+                DoPieceMove(SelectedField, sender); // Bewege Figur
                 ResetSelectedField(); // Auswahl zurücksetzen
             }
             else
             {
-                if (SelectedField == coordinates) // Erneutes Anklicken des Auswahlfeldes
+                if (SelectedField == sender) // Erneutes Anklicken des Auswahlfeldes
                     ResetSelectedField(); // Auswahl zurücksetzen
                 else // Tritt ein, wenn ein Feld angeklickt wurde, dass nicht das Auswahlfeld ist
                 {
-                    if (SelectedField.HasValue) // Wenn ein Feld ausgewählt ist wird die Auswahl gelöscht falls nicht das Auswahlfeld angeklickt wurde
+                    if (FieldIsSelected) // Wenn ein Feld ausgewählt ist wird die Auswahl gelöscht falls nicht das Auswahlfeld angeklickt wurde
                         ResetSelectedField(); // Auswahl zurücksetzen
-                    if (!fields[(int)coordinates.X, (int)coordinates.Y].IsEmpty && fields[(int)coordinates.X, (int)coordinates.Y].CurrentPiece.color == activePlayer) // Feld wird nur ausgewählt, wenn die Farbe der Figur mit der des aktiven Spielers übereinstimmt
+                    if (!sender.IsEmpty && sender.CurrentPiece.color == activePlayer) // Feld wird nur ausgewählt, wenn die Farbe der Figur mit der des aktiven Spielers übereinstimmt
-                        SelectedField = coordinates; // Kein Feld ist ausgewählt: Angeklicktes Feld auswählen (!) AKTUALISIERT AUTOMATISCH DIE MARKIERUNGEN
+                        SelectedField = sender; // Kein Feld ist ausgewählt: Angeklicktes Feld auswählen (!) AKTUALISIERT AUTOMATISCH DIE MARKIERUNGEN
                 }
             }
             this.ResumeLayout(false);
@@ -166,7 +245,7 @@ namespace ChessPanel
         /// </summary>
         private void ResetSelectedField()
         {
-            fields[(int)SelectedField.Value.X, (int)SelectedField.Value.Y].Deselect(); // Auswahl zurücksetzen
+            SelectedField.Deselect(); // Auswahl zurücksetzen
             SelectedField = null; // Erlaubte Zielfelder zurücksetzen
         }
         #region Helper Can be deleted
@@ -186,11 +265,11 @@ namespace ChessPanel
         private void RefreshSize()
         {
             this.SuspendLayout();
-            int subPanelEdgeLength = Math.Min(this.Size.Width, this.Size.Height) / gridSize;
+            int subPanelEdgeLength = Math.Min(this.Size.Width, this.Size.Height) / GRID_SIZE;
             System.Drawing.Size subPanelSize = new System.Drawing.Size(subPanelEdgeLength, subPanelEdgeLength);
-            for (int x = 0; x < this.gridSize; x++)
+            for (int x = 0; x < this.GRID_SIZE; x++)
             {
-                for (int y = 0; y < this.gridSize; y++)
+                for (int y = 0; y < this.GRID_SIZE; y++)
                 {
                     fields[x, y].Size = subPanelSize;
                     fields[x, y].Location = new System.Drawing.Point(x * subPanelSize.Width, y * subPanelSize.Height);

ChessPanel/ChessGame.cs

@@ -15,24 +15,25 @@ namespace Chess
 
         private void InitializeComponent()
         {
-            this.board = new ChessBoard();
+            this.board = new ChessPanel.ChessBoard();
             this.SuspendLayout();
             // 
             // board
             // 
+            this.board.Cursor = System.Windows.Forms.Cursors.Hand;
             this.board.GridSize = 8;
-            this.board.Cursor = Cursors.Hand;
             this.board.Location = new System.Drawing.Point(0, 0);
             this.board.Name = "board";
-            int size = Math.Min(this.Size.Width, this.Size.Height);
+            this.board.Size = new System.Drawing.Size(100, 100);
-            board.Size = new System.Drawing.Size(size, size);
             this.board.TabIndex = 0;
+            this.board.Paint += new System.Windows.Forms.PaintEventHandler(this.board_Paint);
             // 
             // ChessGame
             // 
             this.Controls.Add(this.board);
             this.Resize += new System.EventHandler(this.ResizeEvent);
             this.ResumeLayout(false);
+
         }
 
         private void ResizeEvent(object sender, EventArgs e)
@@ -77,5 +78,10 @@ namespace Chess
             board.Size = new System.Drawing.Size(size, size);
             board.Location = this.Size.Width > this.Size.Height ? new System.Drawing.Point((this.Size.Width - size) / 2, 0) : new System.Drawing.Point(0, (this.Size.Height - size) / 2);
         }
+
+        private void board_Paint(object sender, PaintEventArgs e)
+        {
+
+        }
     }
 }

ChessPanel/ChessGame.resx

@@ -0,0 +1,120 @@
+<?xml version="1.0" encoding="utf-8"?>
+<root>
+  <!-- 
+    Microsoft ResX Schema 
+    
+    Version 2.0
+    
+    The primary goals of this format is to allow a simple XML format 
+    that is mostly human readable. The generation and parsing of the 
+    various data types are done through the TypeConverter classes 
+    associated with the data types.
+    
+    Example:
+    
+    ... ado.net/XML headers & schema ...
+    <resheader name="resmimetype">text/microsoft-resx</resheader>
+    <resheader name="version">2.0</resheader>
+    <resheader name="reader">System.Resources.ResXResourceReader, System.Windows.Forms, ...</resheader>
+    <resheader name="writer">System.Resources.ResXResourceWriter, System.Windows.Forms, ...</resheader>
+    <data name="Name1"><value>this is my long string</value><comment>this is a comment</comment></data>
+    <data name="Color1" type="System.Drawing.Color, System.Drawing">Blue</data>
+    <data name="Bitmap1" mimetype="application/x-microsoft.net.object.binary.base64">
+        <value>[base64 mime encoded serialized .NET Framework object]</value>
+    </data>
+    <data name="Icon1" type="System.Drawing.Icon, System.Drawing" mimetype="application/x-microsoft.net.object.bytearray.base64">
+        <value>[base64 mime encoded string representing a byte array form of the .NET Framework object]</value>
+        <comment>This is a comment</comment>
+    </data>
+                
+    There are any number of "resheader" rows that contain simple 
+    name/value pairs.
+    
+    Each data row contains a name, and value. The row also contains a 
+    type or mimetype. Type corresponds to a .NET class that support 
+    text/value conversion through the TypeConverter architecture. 
+    Classes that don't support this are serialized and stored with the 
+    mimetype set.
+    
+    The mimetype is used for serialized objects, and tells the 
+    ResXResourceReader how to depersist the object. This is currently not 
+    extensible. For a given mimetype the value must be set accordingly:
+    
+    Note - application/x-microsoft.net.object.binary.base64 is the format 
+    that the ResXResourceWriter will generate, however the reader can 
+    read any of the formats listed below.
+    
+    mimetype: application/x-microsoft.net.object.binary.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Binary.BinaryFormatter
+            : and then encoded with base64 encoding.
+    
+    mimetype: application/x-microsoft.net.object.soap.base64
+    value   : The object must be serialized with 
+            : System.Runtime.Serialization.Formatters.Soap.SoapFormatter
+            : and then encoded with base64 encoding.
+
+    mimetype: application/x-microsoft.net.object.bytearray.base64
+    value   : The object must be serialized into a byte array 
+            : using a System.ComponentModel.TypeConverter
+            : and then encoded with base64 encoding.
+    -->
+  <xsd:schema id="root" xmlns="" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:msdata="urn:schemas-microsoft-com:xml-msdata">
+    <xsd:import namespace="http://www.w3.org/XML/1998/namespace" />
+    <xsd:element name="root" msdata:IsDataSet="true">
+      <xsd:complexType>
+        <xsd:choice maxOccurs="unbounded">
+          <xsd:element name="metadata">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" />
+              </xsd:sequence>
+              <xsd:attribute name="name" use="required" type="xsd:string" />
+              <xsd:attribute name="type" type="xsd:string" />
+              <xsd:attribute name="mimetype" type="xsd:string" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="assembly">
+            <xsd:complexType>
+              <xsd:attribute name="alias" type="xsd:string" />
+              <xsd:attribute name="name" type="xsd:string" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="data">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+                <xsd:element name="comment" type="xsd:string" minOccurs="0" msdata:Ordinal="2" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" msdata:Ordinal="1" />
+              <xsd:attribute name="type" type="xsd:string" msdata:Ordinal="3" />
+              <xsd:attribute name="mimetype" type="xsd:string" msdata:Ordinal="4" />
+              <xsd:attribute ref="xml:space" />
+            </xsd:complexType>
+          </xsd:element>
+          <xsd:element name="resheader">
+            <xsd:complexType>
+              <xsd:sequence>
+                <xsd:element name="value" type="xsd:string" minOccurs="0" msdata:Ordinal="1" />
+              </xsd:sequence>
+              <xsd:attribute name="name" type="xsd:string" use="required" />
+            </xsd:complexType>
+          </xsd:element>
+        </xsd:choice>
+      </xsd:complexType>
+    </xsd:element>
+  </xsd:schema>
+  <resheader name="resmimetype">
+    <value>text/microsoft-resx</value>
+  </resheader>
+  <resheader name="version">
+    <value>2.0</value>
+  </resheader>
+  <resheader name="reader">
+    <value>System.Resources.ResXResourceReader, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+  <resheader name="writer">
+    <value>System.Resources.ResXResourceWriter, System.Windows.Forms, Version=4.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089</value>
+  </resheader>
+</root>

ChessPanel/ClassDiagram.cd

@@ -1,107 +0,0 @@
-<?xml version="1.0" encoding="utf-8"?>
-<ClassDiagram MajorVersion="1" MinorVersion="1">
-  <Class Name="ChessPanel.ChessBoard" Collapsed="true">
-    <Position X="19" Y="0.5" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AICAAAAAAAAAAAAQAQAACCAEAIAgJAAACgAAAEoABII=</HashCode>
-      <FileName>ChessBoard.cs</FileName>
-    </TypeIdentifier>
-  </Class>
-  <Class Name="Chess.ChessGame" Collapsed="true">
-    <Position X="20.75" Y="0.5" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AAAAAAAAAAAAIAAAAEAAAAACAAAABAAAIAAAAAAAAAA=</HashCode>
-      <FileName>ChessGame.cs</FileName>
-    </TypeIdentifier>
-  </Class>
-  <Class Name="Chess.Field" Collapsed="true">
-    <Position X="22.5" Y="0.5" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AABBgAEIEIYEIBAACAAAIAACADAAAEACAAAgQAAAABA=</HashCode>
-      <FileName>Field.cs</FileName>
-    </TypeIdentifier>
-  </Class>
-  <Class Name="Chess.Form1" Collapsed="true">
-    <Position X="19" Y="1.5" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AAAAEAAAACAAAAAAAACAAAACAAAAAAAAAAAAAAAAAAA=</HashCode>
-      <FileName>Form1.cs</FileName>
-    </TypeIdentifier>
-  </Class>
-  <Class Name="Chess.Piece" Collapsed="true">
-    <Position X="10.75" Y="0.5" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AAABAAAAAAAAAAAAAAAAAAAAEAABAACAAAAAAAgAAAA=</HashCode>
-      <FileName>Piece.cs</FileName>
-    </TypeIdentifier>
-  </Class>
-  <Class Name="Chess.Rook" Collapsed="true">
-    <Position X="9.75" Y="1.75" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAgAAAA=</HashCode>
-      <FileName>Piece.cs</FileName>
-    </TypeIdentifier>
-  </Class>
-  <Class Name="Chess.Pawn" Collapsed="true">
-    <Position X="14.25" Y="1.75" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAgAAAA=</HashCode>
-      <FileName>Piece.cs</FileName>
-    </TypeIdentifier>
-  </Class>
-  <Class Name="Chess.Knight" Collapsed="true">
-    <Position X="5.25" Y="1.75" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAgAAAA=</HashCode>
-      <FileName>Piece.cs</FileName>
-    </TypeIdentifier>
-  </Class>
-  <Class Name="Chess.Bishop" Collapsed="true">
-    <Position X="7.5" Y="1.75" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAgAAAA=</HashCode>
-      <FileName>Piece.cs</FileName>
-    </TypeIdentifier>
-  </Class>
-  <Class Name="Chess.Queen" Collapsed="true">
-    <Position X="12" Y="1.75" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAgAAAA=</HashCode>
-      <FileName>Piece.cs</FileName>
-    </TypeIdentifier>
-  </Class>
-  <Class Name="Chess.King" Collapsed="true">
-    <Position X="16.5" Y="1.75" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AAAAAAAAAAAAAAAAAAAAAQAAAAAAAAAAAAAAAAgAAAA=</HashCode>
-      <FileName>Piece.cs</FileName>
-    </TypeIdentifier>
-  </Class>
-  <Class Name="Chess.Program" Collapsed="true">
-    <Position X="20.75" Y="1.5" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAABAAAAAA=</HashCode>
-      <FileName>Program.cs</FileName>
-    </TypeIdentifier>
-  </Class>
-  <Class Name="Chess.Properties.Resources" Collapsed="true">
-    <Position X="22.5" Y="1.5" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AAAAAADAgQAQABAAAAIBEAAAIUAAIAAABAACAAAAIIA=</HashCode>
-    </TypeIdentifier>
-  </Class>
-  <Class Name="Chess.Properties.Settings" Collapsed="true">
-    <Position X="19" Y="2.5" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AAAAAAAAAAAAAAAAAAAAIAAAAAABAAAAAAAAAAAAAAA=</HashCode>
-    </TypeIdentifier>
-  </Class>
-  <Struct Name="Chess.FieldColorSet" Collapsed="true">
-    <Position X="19" Y="3.75" Width="1.5" />
-    <TypeIdentifier>
-      <HashCode>AAAQAQAAAAAAAAAAAIAAAAAAAAAAAAAAAAAAAAAAAAA=</HashCode>
-      <FileName>FieldColorSet.cs</FileName>
-    </TypeIdentifier>
-  </Struct>
-  <Font Name="Segoe UI" Size="9" />
-</ClassDiagram>

ChessPanel/Field.cs

@@ -21,17 +21,35 @@ namespace Chess
         private FieldColorSet currentEnemyColorSet;
         private FieldColorSet currentSelectedColorSet;
         private FieldColorSet currentAllyColorSet;
-        public delegate void ClickEventHandler(Vector coordinates);
+        public delegate void ClickEventHandler(Field sender);
         public event ClickEventHandler FieldClick;
         public bool IsEmpty { get { return currentPiece == null; } }
         public Piece currentPiece;
         public Piece CurrentPiece
         {
-            get { return currentPiece; }
+            get
-            set { currentPiece = value; RefreshPiece(); }
+            {
+                return currentPiece;
+            }
+            set
+            {
+                currentPiece = value;
+                RefreshPiece();
+            }
+        }
+        public override string Text
+        {
+            get
+            {
+                return "";
+                var pos = location.ToString();
+                if (IsEmpty)
+                    return pos + Environment.NewLine + "leer";
+                return pos + Environment.NewLine + currentPiece.ToString();
+            }
         }
 
-        private void RefreshPiece()
+        public void RefreshPiece()
         {
             if (currentPiece == null)
                 this.BackgroundImage = ChessPanel.Properties.Resources.Empty;
@@ -40,17 +58,17 @@ namespace Chess
         }
         public void Deselect()
         {
-            setActiveColorSet(currentNormalColorSet);
+            SetActiveColorSet(currentNormalColorSet);
         }
         public void Highlight(PieceTeam team) // validTargetField
         {
             switch (team)
             {
                 case PieceTeam.Enemy:
-                    setActiveColorSet(currentEnemyColorSet);
+                    SetActiveColorSet(currentEnemyColorSet);
                     break;
                 case PieceTeam.Ally:
-                    setActiveColorSet(currentAllyColorSet);
+                    SetActiveColorSet(currentAllyColorSet);
                     break;
                 default:
                     break;
@@ -58,9 +76,9 @@ namespace Chess
         }
         public new void Select() // selectedField
         {
-            setActiveColorSet(currentSelectedColorSet);
+            SetActiveColorSet(currentSelectedColorSet);
         }
-        private void setActiveColorSet(FieldColorSet set)
+        private void SetActiveColorSet(FieldColorSet set)
         {
             this.BackColor = set.NormalColor;
             this.FlatAppearance.MouseDownBackColor = set.MouseDownColor;
@@ -68,34 +86,36 @@ namespace Chess
         }
         public Field(int x, int y)
         {
-            this.currentNormalColorSet = (x + y) % 2 == 0 ? primaryNormalColorSet : secondaryNormalColorSet;
+            this.currentNormalColorSet = (x + y) % 2 == 0 ? FieldColorSet.primaryNormalColorSet : FieldColorSet.secondaryNormalColorSet;
-            this.currentAllyColorSet = (x + y) % 2 == 0 ? primaryValidFriendlyTargetFieldSet : secondaryValidFriendlyTargetFieldSet;
+            this.currentAllyColorSet = (x + y) % 2 == 0 ? FieldColorSet.primaryValidFriendlyTargetFieldSet : FieldColorSet.secondaryValidFriendlyTargetFieldSet;
-            this.currentEnemyColorSet = (x + y) % 2 == 0 ? primaryValidEnemyTargetFieldSet : secondaryValidEnemyTargetFieldSet;
+            this.currentEnemyColorSet = (x + y) % 2 == 0 ? FieldColorSet.primaryValidEnemyTargetFieldSet : FieldColorSet.secondaryValidEnemyTargetFieldSet;
-            this.currentSelectedColorSet = (x + y) % 2 == 0 ? primarySelectedColorSet : secondarySelectedColorSet;
+            this.currentSelectedColorSet = (x + y) % 2 == 0 ? FieldColorSet.primarySelectedColorSet : FieldColorSet.secondarySelectedColorSet;
 
 
             this.FlatStyle = FlatStyle.Flat;
             this.FlatAppearance.BorderSize = 0;
-            this.setActiveColorSet(this.currentNormalColorSet);
+            this.SetActiveColorSet(this.currentNormalColorSet);
             this.Cursor = Cursors.Arrow;
 
             this.location = new Vector(x, y); // NICHT L(!)ocation, der gibt die Position des Buttons in Pixel auf dem Control an!
             this.Name = string.Format($"field[{x},{y}]");
-            this.Text = "";
+            this.Text = string.Empty;
 
             this.BackgroundImageLayout = ImageLayout.Zoom;
             this.BackgroundImage = ChessPanel.Properties.Resources.Empty;
 
-            this.Click += clicked;
+            this.Click += Clicked;
         }
 
-        private void clicked(object sender, EventArgs e)
+        private void Clicked(object sender, EventArgs e)
         {
-            FieldClick(this.location);
+            FieldClick(this);
         }
         public override string ToString()
         {
-            return this.currentPiece.type.ToString();
+            if (IsEmpty)
+                return "leer";
+            return this.currentPiece.ToString();
         }
     }
 }

ChessPanel/FieldColorSet.cs

@@ -3,6 +3,14 @@ namespace Chess
 {
     struct FieldColorSet
     {
+        public static readonly FieldColorSet primaryNormalColorSet = new FieldColorSet(Color.FromArgb(204, 204, 204), Color.FromArgb(153, 153, 153), Color.White);
+        public static readonly FieldColorSet secondaryNormalColorSet = new FieldColorSet(Color.FromArgb(51, 51, 51), Color.FromArgb(102, 102, 102), Color.Black);
+        public static readonly FieldColorSet primarySelectedColorSet = new FieldColorSet(Color.FromArgb(204, 204, 102), Color.FromArgb(153, 153, 102), Color.FromArgb(255, 255, 102));
+        public static readonly FieldColorSet secondarySelectedColorSet = new FieldColorSet(Color.FromArgb(204, 204, 51), Color.FromArgb(153, 153, 51), Color.FromArgb(255, 255, 51));
+        public static readonly FieldColorSet primaryValidFriendlyTargetFieldSet = new FieldColorSet(Color.FromArgb(102, 204, 102), Color.FromArgb(102, 153, 102), Color.FromArgb(102, 255, 102));
+        public static readonly FieldColorSet secondaryValidFriendlyTargetFieldSet = new FieldColorSet(Color.FromArgb(51, 204, 51), Color.FromArgb(51, 153, 51), Color.FromArgb(51, 255, 51));
+        public static readonly FieldColorSet primaryValidEnemyTargetFieldSet = new FieldColorSet(Color.FromArgb(204, 102, 102), Color.FromArgb(153, 102, 102), Color.FromArgb(255, 102, 102));
+        public static readonly FieldColorSet secondaryValidEnemyTargetFieldSet = new FieldColorSet(Color.FromArgb(204, 51, 51), Color.FromArgb(153, 51, 51), Color.FromArgb(255, 51, 51));
         public FieldColorSet(Color MOC, Color MDC, Color NC)
         {
             MouseOverColor = MOC;

ChessPanel/Grid.cs

@@ -0,0 +1,169 @@
+using Chess;
+using System;
+using System.Windows;
+using System.Collections;
+
+namespace ChessPanel
+{
+    public class Grid : IEnumerable
+    {
+        public Grid(int GridSize)
+        {
+            fields = new Field[GridSize, GridSize];
+            this.GridSize = GridSize;
+        }
+        //public Grid(Field[,] fields)
+        //{
+        //    this.GridSize = fields.GetLength(0);
+        //    this.fields = CopyMultiArray(fields);
+        //}
+        /// <summary>
+        /// Creates a copy of the given array;
+        /// </summary>
+        /// <typeparam name="T"></typeparam>
+        /// <param name="Array"></param>
+        /// <returns></returns>
+        private static T[,] CopyMultiArray<T>(T[,] Array)
+        {
+            int[] dim = new int[] { Array.GetLength(0), Array.GetLength(1) };
+            T[,] Copy = new T[dim[0], dim[1]];
+            for (int x = 0; x < dim[0]; x++)
+                for (int y = 0; y < dim[1]; y++)
+                    Copy[x, y] = Array[x, y];
+            return Copy;
+        }
+        //public Grid(Grid fields) : this(fields.fields) { }
+        public Field[,] fields;
+        public int GridSize;
+        public Field this[Vector v] { get { return fields[(int)v.X, (int)v.Y]; } set { fields[(int)v.X, (int)v.Y] = value; } }
+
+        internal Piece GetKing(PieceColor color)
+        {
+            foreach (Field item in this)
+            {
+                if (item.CurrentPiece?.color == color && item.CurrentPiece?.type == PieceType.King)
+                    return item.CurrentPiece;
+            }
+            throw new Exception("No King found");
+        }
+
+        public Field this[int x, int y] { get { return fields[x, y]; } set { fields[x, y] = value; } }
+        public Field this[double x, double y] { get { return fields[(int)x, (int)y]; } set { fields[(int)x, (int)y] = value; } }
+        /// <summary>
+        /// Adds x and y values to Vector v and gets the field at the position
+        /// </summary>
+        /// <param name="v">Vector</param>
+        /// <param name="x">X</param>
+        /// <param name="y">Y</param>
+        /// <returns>Field</returns>
+        public Field this[Vector v, int x, int y] { get { return fields[x + (int)v.X, y + (int)v.Y]; } set { fields[x + (int)v.X, y + (int)v.Y] = value; } }
+        public Field this[int x, int y, Vector v] { get { return fields[x + (int)v.X, y + (int)v.Y]; } set { fields[x + (int)v.X, y + (int)v.Y] = value; } }
+        public Field this[Vector v, double x, double y]
+        {
+            get
+            {
+                return fields[(int)x + (int)v.X, (int)y + (int)v.Y];
+            }
+            set
+            {
+                fields[(int)x + (int)v.X, (int)y + (int)v.Y] = value;
+            }
+        }
+        public Field this[double x, double y, Vector v] { get { return fields[(int)x + (int)v.X, (int)y + (int)v.Y]; } set { fields[(int)x + (int)v.X, (int)y + (int)v.Y] = value; } }
+        public Field GetFieldWithOffset(Field f, double x, double y)
+        {
+            int _x = (int)(f.location.X + x);
+            int _y = (int)(f.location.Y + y);
+            return fields[_x, _y];
+        }
+
+
+
+        /// <summary>
+        /// Checks if a field is endagered by a party
+        /// </summary>
+        /// <param name="field">Reference to the Field that should be checked</param>
+        /// <param name="color">Color of the attacking party</param>
+        /// <param name="movePiece">Piece that virtually got moved</param>
+        /// <param name="targetPos">Field that the movePiece virtually moved to</param>
+        /// <returns></returns>
+        public bool IsFieldVirtuallyEndagered(Field field, PieceColor color, Piece movePiece, Field targetPos)
+        {
+            foreach (Field item in this)
+            {
+                if (item.IsEmpty) continue; // Feld ist leer
+                if (item == movePiece.field) continue; // Quellfeld muss nicht geprüft werden
+
+                Piece p = item.CurrentPiece;
+                if (p.color != color) continue; // Figur ist kein Gegner
+
+                // Ask every Piece of the other party if it can attack the specified field
+                if (p.EndageresFieldWithVirtualMove(this, field, movePiece, targetPos))
+                    //if (item.currentPiece.GetValidTargetFields(movePiece, targetPos).ContainsKey(field))
+                    return true;
+            }
+            return false;
+
+        }
+
+
+
+        IEnumerator IEnumerable.GetEnumerator()
+        {
+            return new FieldEnum(fields);
+        }
+    }
+
+    // When you implement IEnumerable, you must also implement IEnumerator.
+    public class FieldEnum : IEnumerator
+    {
+        public Field[,] field;
+
+        // Enumerators are positioned before the first element
+        // until the first MoveNext() call.
+        int position = -1;
+        int width;
+        int height;
+
+        public FieldEnum(Field[,] list)
+        {
+            field = list;
+            width = list.GetLength(0);
+            height = list.GetLength(1);
+        }
+
+        public bool MoveNext()
+        {
+            position++;
+            return (position < field.Length);
+        }
+
+        public void Reset()
+        {
+            position = -1;
+        }
+
+        object IEnumerator.Current
+        {
+            get
+            {
+                return Current;
+            }
+        }
+
+        public Field Current
+        {
+            get
+            {
+                try
+                {
+                    return field[position % 8, position / 8];
+                }
+                catch (IndexOutOfRangeException)
+                {
+                    throw new InvalidOperationException();
+                }
+            }
+        }
+    }
+}

ChessPanel/MainForm.cs

@@ -5,11 +5,11 @@ namespace Chess
 {
     public partial class MainForm : Form
     {
-        bool Fullscreen = false;
+        bool _fullscreen = false;
-        bool fullscreen
+        bool Fullscreen
         {
-            get { return Fullscreen; }
+            get { return _fullscreen; }
-            set { Fullscreen = value; RefreshFullScreen(); }
+            set { _fullscreen = value; RefreshFullScreen(); }
         }
         public MainForm()
         {
@@ -19,7 +19,7 @@ namespace Chess
         private void RefreshFullScreen()
         {
             this.SuspendLayout();
-            if (fullscreen)
+            if (Fullscreen)
             {
                 this.WindowState = FormWindowState.Normal;
                 this.FormBorderStyle = FormBorderStyle.None;
@@ -36,7 +36,7 @@ namespace Chess
         private void MainForm_KeyUp(object sender, KeyEventArgs e)
         {
             if (e.KeyCode == Keys.F11)
-                fullscreen = !fullscreen;
+                Fullscreen = !Fullscreen;
         }
 
         private void MainForm_FormClosing(object sender, FormClosingEventArgs e)
@@ -46,7 +46,7 @@ namespace Chess
 
         private void MainForm_Load(object sender, EventArgs e)
         {
-            fullscreen = true;
+            Fullscreen = true;
         }
     }
 }

ChessPanel/Piece.cs

@@ -1,461 +0,0 @@
-using System;
-using System.Collections.Generic;
-using System.Drawing;
-using ChessPanel;
-using System.Linq;
-using System.Windows;
-
-namespace Chess
-{
-    public abstract class Piece
-    {
-        public enum PieceColor { White, Black };
-        public enum PieceTeam { Enemy, Ally };
-        public enum PieceType { King, Queen, Bishop, Rook, Knight, Pawn };
-        public PieceColor color;
-        public PieceType type;
-        public Image image;
-        public bool HasMoved = false;
-        public bool EnPassantPossible = false; // Only in Pawn Class. Signs that this Piece has virtually not jumped two pieces, but one
-        internal static bool IsEndangeredLocationForPiece(Field[,] fields, Vector pieceLocation, Vector testLocation, PieceColor color)
-        {
-            bool returnValue = false;
-            Piece p = fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece;
-            fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece = null;
-            foreach (var field in fields)
-            {
-                if (field.currentPiece != null) if (field.currentPiece.color != color) if (field.currentPiece.GetValidTargetFields(fields, field.location, true).ContainsKey(testLocation))
-                        {
-                            returnValue = true;
-                            break;
-                        }
-            }
-            fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece = p;
-            return returnValue;
-        }
-        internal static bool MoveWillEndangerKing(Field[,] fields, Vector pieceLocation, Vector pieceMovedLocation, PieceColor color) // This does not test if it is a valid move spot
-        {
-            bool returnValue = false;
-            Piece p1 = fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece;
-            Piece p2 = fields[(int)pieceMovedLocation.X, (int)pieceMovedLocation.Y].currentPiece;
-            fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece = null;
-            fields[(int)pieceMovedLocation.X, (int)pieceMovedLocation.Y].currentPiece = p1;
-            returnValue = KingIsEndangered(fields, color);
-            fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece = p1;
-            fields[(int)pieceMovedLocation.X, (int)pieceMovedLocation.Y].currentPiece = p2;
-            return returnValue;
-        }
-
-        private static bool KingIsEndangered(Field[,] fields, PieceColor color)
-        {
-            Vector kingLocation = GetKingLocation(fields, color);
-            foreach (var field in fields)
-            {
-                if (field.currentPiece == null || field.currentPiece.color != color)
-                    continue;
-                if (field.currentPiece.GetValidTargetFields(fields, field.location, testKingDanger: true).ContainsKey(kingLocation))
-                {
-                    return true;
-                }
-            }
-            return false;
-        }
-
-        private static Vector GetKingLocation(Field[,] fields, PieceColor color)
-        {
-            foreach (var field in fields)
-                if (!field.IsEmpty && field.currentPiece.type == PieceType.King && field.currentPiece.color == color)
-                    return field.location;
-            throw new Exception("King not found!");
-        }
-
-        internal abstract Dictionary<Vector, PieceTeam> GetValidTargetFields(Field[,] fields, Vector currentLocation, bool onlyAttackFields = false, bool testKingDanger = false);
-    }
-    public class Rook : Piece
-    {
-        public Rook(PieceColor color)
-        {
-            type = (PieceType)Enum.Parse(typeof(PieceType), this.GetType().Name);
-            this.color = color;
-            this.image = (Image)ChessPanel.Properties.Resources.ResourceManager.GetObject($"{this.type.ToString()}{this.color.ToString()}");
-        }
-
-        internal override Dictionary<Vector, PieceTeam> GetValidTargetFields(Field[,] fields, Vector location, bool ignoreKingCheck = false, bool testKingDanger = false)
-        {
-            var targetFields = GetTargetFields(fields, location, this.color);
-            /*if (!testKingDanger)
-                foreach (var item in targetFields)
-                    if (MoveWillEndangerKing(fields, location, item.Key, this.color))
-                        targetFields.Remove(item.Key);*/
-            return targetFields;
-        }
-
-        internal static Dictionary<Vector, PieceTeam> GetTargetFields(Field[,] fields, Vector location, PieceColor color)
-        {
-            Dictionary<Vector, PieceTeam> targetFields = new Dictionary<Vector, PieceTeam>();
-
-            for (int x = (int)location.X - 1; x >= 0; x--) // nach Links
-            {
-                if (fields[x, (int)location.Y].IsEmpty)
-                {
-                    targetFields.Add(new Vector(x, (int)location.Y), PieceTeam.Ally);
-                }
-                else
-                {
-                    if (fields[x, (int)location.Y].currentPiece.color != color)
-                        targetFields.Add(new Vector(x, (int)location.Y), PieceTeam.Enemy);
-                    break;
-                }
-            }
-
-
-            for (int x = (int)location.X + 1; x <= 7; x++) // nach Rechts
-            {
-                if (fields[x, (int)location.Y].IsEmpty)
-                {
-                    targetFields.Add(new Vector(x, (int)location.Y), PieceTeam.Ally);
-                }
-                else
-                {
-                    if (fields[x, (int)location.Y].currentPiece.color != color)
-                        targetFields.Add(new Vector(x, (int)location.Y), PieceTeam.Enemy);
-                    break;
-                }
-            }
-
-            for (int y = (int)location.Y - 1; y >= 0; y--) // nach Unten
-            {
-                if (fields[(int)(int)location.X, y].IsEmpty)
-                {
-                    targetFields.Add(new Vector((int)location.X, y), PieceTeam.Ally);
-                }
-                else
-                {
-                    if (fields[(int)(int)location.X, y].currentPiece.color != color)
-                        targetFields.Add(new Vector((int)location.X, y), PieceTeam.Enemy);
-                    break;
-                }
-            }
-
-
-            for (int y = (int)location.Y + 1; y <= 7; y++) // nach Oben
-            {
-                if (fields[(int)(int)location.X, y].IsEmpty)
-                {
-                    targetFields.Add(new Vector((int)location.X, y), PieceTeam.Ally);
-                }
-                else
-                {
-                    if (fields[(int)(int)location.X, y].currentPiece.color != color)
-                        targetFields.Add(new Vector((int)location.X, y), PieceTeam.Enemy);
-                    break;
-                }
-            }
-
-            return targetFields;
-        }
-    } // FINALIZED
-    public class Pawn : Piece
-    {
-        public Pawn(PieceColor color)
-        {
-            type = (PieceType)Enum.Parse(typeof(PieceType), this.GetType().Name);
-            this.color = color;
-            this.image = (Image)ChessPanel.Properties.Resources.ResourceManager.GetObject($"{this.type.ToString()}{this.color.ToString()}");
-        }
-
-        internal override Dictionary<Vector, PieceTeam> GetValidTargetFields(Field[,] fields, Vector location, bool onlyAttackFields = false, bool testKingDanger = false)
-        {
-            var targetFields = GetTargetFields(fields, location, this.color, onlyAttackFields);
-            /*if (!testKingDanger)
-                foreach (var item in targetFields)
-                    if (MoveWillEndangerKing(fields, location, item.Key, this.color))
-                        targetFields.Remove(item.Key);*/
-            return targetFields;
-        }
-
-        private Dictionary<Vector, PieceTeam> GetTargetFields(Field[,] fields, Vector location, PieceColor color, bool onlyAttackFields = false)
-        {
-            Dictionary<Vector, PieceTeam> targetFields = new Dictionary<Vector, PieceTeam>();
-            int direction = this.color == PieceColor.White ? -1 : 1;
-            #region EnPassant
-            if (location.Y == (this.color == PieceColor.White ? 3 : 4))
-                for (int x = -1; x < 2; x += 2)
-                    if (location.X + x <= 7 && location.X + x >= 0)
-                        if (fields[(int)location.X + x, (int)location.Y].currentPiece != null)
-                            if (fields[(int)location.X + x, (int)location.Y].currentPiece.type == PieceType.Pawn)
-                                if (fields[(int)location.X + x, (int)location.Y].currentPiece.color != this.color)
-                                    if (fields[(int)location.X + x, (int)location.Y].currentPiece.EnPassantPossible)
-                                        targetFields.Add(new Vector(location.X + x, location.Y + direction), PieceTeam.Enemy);
-            #endregion
-            #region Movement    
-            if (!onlyAttackFields)
-                for (int y = 1; y < 1 + (HasMoved ? 1 : 2); y++)
-                {
-                    if (location.Y + (direction * y) > 7 || location.Y + (direction * y) < 0)
-                        break;
-                    if (fields[(int)location.X, (int)location.Y + (direction * y)].IsEmpty)
-                        targetFields.Add(new Vector(location.X, (int)location.Y + (direction * y)), PieceTeam.Ally);
-                    else
-                        break;
-                }
-            #endregion
-            #region Attack
-            for (int x = -1; x < 2; x += 2)
-            {
-                if (location.Y + (direction) > 7 || location.Y + (direction) < 0 || location.X + x > 7 || location.X + x < 0)
-                    continue;
-                if (onlyAttackFields || (fields[(int)location.X + x, (int)location.Y + (direction)].currentPiece != null && fields[(int)location.X + x, (int)location.Y + (direction)].currentPiece.color != this.color))
-                {
-                    targetFields.Add(new Vector((int)location.X + x, (int)location.Y + (direction)), PieceTeam.Enemy);
-                }
-            }
-            #endregion
-            return targetFields;
-        }
-    } // EN-PASSANT MISSING
-    public class Knight : Piece
-    {
-        public Knight(PieceColor color)
-        {
-            type = (PieceType)Enum.Parse(typeof(PieceType), this.GetType().Name);
-            this.color = color;
-            this.image = (Image)ChessPanel.Properties.Resources.ResourceManager.GetObject($"{this.type.ToString()}{this.color.ToString()}");
-        }
-
-        internal override Dictionary<Vector, PieceTeam> GetValidTargetFields(Field[,] fields, Vector location, bool ignoreKingCheck = false, bool testKingDanger = false)
-        {
-            var targetFields = GetTargetFields(fields, location, this.color);
-           /* if (!testKingDanger)
-                foreach (var item in targetFields)
-                    if (MoveWillEndangerKing(fields, location, item.Key, this.color))
-                        targetFields.Remove(item.Key);*/
-            return targetFields;
-        }
-
-        private Dictionary<Vector, PieceTeam> GetTargetFields(Field[,] fields, Vector location, PieceColor color)
-        {
-            Dictionary<Vector, PieceTeam> targetFields = new Dictionary<Vector, PieceTeam>();
-
-            for (int a = -1; a < 2; a += 2)
-            {
-                for (int b = -2; b < 3; b += 4)
-                {
-                    if (!(a + (int)location.X > 7 || b + (int)location.Y < 0 || a + (int)location.X < 0 || b + (int)location.Y > 7))
-                    {
-                        if (fields[a + (int)location.X, b + (int)location.Y].IsEmpty)
-                        {
-                            targetFields.Add(new Vector(a + (int)location.X, b + (int)location.Y), PieceTeam.Ally);
-                        }
-                        else
-                        {
-                            if (fields[a + (int)location.X, b + (int)location.Y].currentPiece.color != color)
-                                targetFields.Add(new Vector(a + (int)location.X, b + (int)location.Y), PieceTeam.Enemy);
-                        }
-                    }
-                    if (!(b + (int)location.X > 7 || a + (int)location.Y < 0 || b + (int)location.X < 0 || a + (int)location.Y > 7))
-                    {
-                        if (fields[b + (int)location.X, a + (int)location.Y].IsEmpty)
-                        {
-                            targetFields.Add(new Vector(b + (int)location.X, a + (int)location.Y), PieceTeam.Ally);
-                        }
-                        else
-                        {
-                            if (fields[b + (int)location.X, a + (int)location.Y].currentPiece.color != color)
-                                targetFields.Add(new Vector(b + (int)location.X, a + (int)location.Y), PieceTeam.Enemy);
-                        }
-                    }
-                }
-            }
-
-            return targetFields;
-        }
-    } // FINALIZED
-    public class Bishop : Piece
-    {
-        public Bishop(PieceColor color)
-        {
-            type = (PieceType)Enum.Parse(typeof(PieceType), this.GetType().Name);
-            this.color = color;
-            this.image = (Image)ChessPanel.Properties.Resources.ResourceManager.GetObject($"{this.type.ToString()}{this.color.ToString()}");
-        }
-
-        internal override Dictionary<Vector, PieceTeam> GetValidTargetFields(Field[,] fields, Vector location, bool onlyAttackFields = false, bool testKingDanger = false)
-        {
-            var targetFields = GetTargetFields(fields, location, this.color, onlyAttackFields);
-           /* if (!testKingDanger)
-                foreach (var item in targetFields)
-                    if (MoveWillEndangerKing(fields, location, item.Key, this.color))
-                        targetFields.Remove(item.Key);*/
-            return targetFields;
-        }
-        internal static Dictionary<Vector, PieceTeam> GetTargetFields(Field[,] fields, Vector location, PieceColor color, bool onlyAttackFields = true)
-        {
-            Dictionary<Vector, PieceTeam> targetFields = new Dictionary<Vector, PieceTeam>();
-
-            for (int xy = 1; xy <= 7; xy++) // nach RechtsOben
-            {
-                if (location.X + xy > 7 || (int)location.Y + xy > 7)
-                    break;
-                if (fields[xy + (int)location.X, xy + (int)location.Y].IsEmpty)
-                {
-                    targetFields.Add(new Vector(xy + (int)location.X, xy + (int)location.Y), PieceTeam.Ally);
-                }
-                else
-                {
-                    if (fields[xy + (int)location.X, xy + (int)location.Y].currentPiece.color != color)
-                        targetFields.Add(new Vector(xy + (int)location.X, xy + (int)location.Y), PieceTeam.Enemy);
-                    break;
-                }
-            }
-            for (int xy = 1; xy <= 7; xy++) // nach LinksOben
-            {
-                if (location.X - xy < 0 || (int)location.Y + xy > 7)
-                    break;
-                if (fields[(int)location.X - xy, (int)location.Y + xy].IsEmpty)
-                {
-                    targetFields.Add(new Vector(location.X - xy, (int)location.Y + xy), PieceTeam.Ally);
-                }
-                else
-                {
-                    if (fields[(int)location.X - xy, (int)location.Y + xy].currentPiece.color != color)
-                        targetFields.Add(new Vector(location.X - xy, (int)location.Y + xy), PieceTeam.Enemy);
-                    break;
-                }
-            }
-            for (int xy = 1; xy <= 7; xy++) // nach RechtsUnten
-            {
-                if (location.X + xy > 7 || (int)location.Y - xy < 0)
-                    break;
-                if (fields[xy + (int)location.X, (int)location.Y - xy].IsEmpty)
-                {
-                    targetFields.Add(new Vector(xy + (int)location.X, (int)location.Y - xy), PieceTeam.Ally);
-                }
-                else
-                {
-                    if (fields[xy + (int)location.X, (int)location.Y - xy].currentPiece.color != color)
-                        targetFields.Add(new Vector(xy + (int)location.X, (int)location.Y - xy), PieceTeam.Enemy);
-                    break;
-                }
-            }
-            for (int xy = 1; xy <= 7; xy++) // nach LinksUnten
-            {
-                if (location.X - xy < 0 || (int)location.Y - xy < 0)
-                    break;
-                if (fields[(int)location.X - xy, (int)location.Y - xy].IsEmpty)
-                {
-                    targetFields.Add(new Vector(location.X - xy, (int)location.Y - xy), PieceTeam.Ally);
-                }
-                else
-                {
-                    if (fields[(int)location.X - xy, (int)location.Y - xy].currentPiece.color != color)
-                        targetFields.Add(new Vector(location.X - xy, (int)location.Y - xy), PieceTeam.Enemy);
-                    break;
-                }
-            }
-            return targetFields;
-        }
-    } // FINALIZED
-    public class Queen : Piece
-    {
-        public Queen(PieceColor color)
-        {
-            type = (PieceType)Enum.Parse(typeof(PieceType), this.GetType().Name);
-            this.color = color;
-            this.image = (Image)ChessPanel.Properties.Resources.ResourceManager.GetObject($"{this.type.ToString()}{this.color.ToString()}");
-        }
-
-        internal override Dictionary<Vector, PieceTeam> GetValidTargetFields(Field[,] fields, Vector location, bool ignoreKingCheck = false, bool testKingDanger = false)
-        {
-            Dictionary<Vector, PieceTeam> targetFields = Rook.GetTargetFields(fields, location, this.color);
-            targetFields = targetFields.Concat(Bishop.GetTargetFields(fields, location, this.color)
-                .Where(kvp => !targetFields.ContainsKey(kvp.Key)))
-                .OrderBy(c => c.Value)
-                .ToDictionary(c => c.Key, c => c.Value);
-            /*if (!testKingDanger)
-                foreach (var item in targetFields)
-                    if (MoveWillEndangerKing(fields, location, item.Key, this.color))
-                        targetFields.Remove(item.Key);*/
-            return targetFields;
-        }
-    } // FINALIZED
-    public class King : Piece
-    {
-        public King(PieceColor color)
-        {
-            type = (PieceType)Enum.Parse(typeof(PieceType), this.GetType().Name);
-            this.color = color;
-            this.image = (Image)ChessPanel.Properties.Resources.ResourceManager.GetObject($"{this.type.ToString()}{this.color.ToString()}");
-        }
-
-        internal override Dictionary<Vector, PieceTeam> GetValidTargetFields(Field[,] fields, Vector location, bool ignoreKingCheck = false, bool testKingDanger = false) // ignoreKingCheck hat keinen Einfluss
-        {
-            return GetTargetFields(fields, location, this.color);
-        }
-
-        private Dictionary<Vector, PieceTeam> GetTargetFields(Field[,] fields, Vector location, PieceColor color)
-        {
-            Dictionary<Vector, PieceTeam> targetFields = new Dictionary<Vector, PieceTeam>();
-            #region Castling
-            if (!this.HasMoved) // Only Castle if King did not move
-                foreach (var item in fields)
-                {
-                    var itemLocation = item.location;
-                    // Sucht nach Ally Turm und prüft, ob er sich schon bewegt hat
-                    if (item.currentPiece != null && item.currentPiece.type == PieceType.Rook && !item.currentPiece.HasMoved && item.currentPiece.color == this.color)
-                    {
-                        if (itemLocation.X == 0 || itemLocation.X == 7)
-                        {
-                            bool castling = true;
-                            for (int x = (itemLocation.X == 0 ? 1 : 5); (itemLocation.X == 0 ? x < 4 : x < 7); x++)
-                            {
-                                if (!fields[x, (int)location.Y].IsEmpty)
-                                {
-                                    castling = false;
-                                    break;
-                                }
-                            }
-                            if (castling) // Only Check endangered Fields if castling is generally possible
-                            {
-                                for (int x = (itemLocation.X == 0 ? 2 : 4); x < (itemLocation.X == 0 ? 5 : 7); x++) // König steht im Schach oder überschreitet bedrohtes Feld
-                                {
-                                    if (IsEndangeredLocationForPiece(fields, location, new Vector(x, location.Y), color))
-                                    {
-                                        castling = false;
-                                        break;
-                                    }
-                                }
-                                if (castling)
-                                {
-                                    targetFields.Add(new Vector((itemLocation.X == 0 ? 2 : 6), itemLocation.Y), PieceTeam.Ally);
-                                }
-                            }
-                        }
-                    }
-                }
-            #endregion
-            #region Movement: 1 in every direction
-            for (int x = -1; x < 2; x++)
-            {
-                for (int y = -1; y < 2; y++)
-                {
-                    if ((x == 0 && y == 0) || location.X + x > 7 || location.Y + y > 7 || location.X + x < 0 || location.Y + y < 0)
-                        continue;
-                    if (!IsEndangeredLocationForPiece(fields, location, new Vector(location.X + x, location.Y + y), color))
-                        if (fields[(int)location.X + x, (int)location.Y + y].IsEmpty)
-                        {
-                            targetFields.Add(new Vector(location.X + x, (int)location.Y + y), PieceTeam.Ally);
-                        }
-                        else
-                        {
-                            if (fields[(int)location.X + x, (int)location.Y + y].currentPiece.color != color)
-                                targetFields.Add(new Vector(location.X + x, (int)location.Y + y), PieceTeam.Enemy);
-                            continue;
-                        }
-                }
-            }
-            #endregion
-            return targetFields;
-        }
-    } // CHECKMATE/CHECK-TEST MISSING
-}

ChessPanel/Pieces/AbstractPiece.cs

@@ -0,0 +1,232 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using ChessPanel;
+using System.Linq;
+using System.Windows;
+
+namespace Chess
+{
+    public enum PieceColor { White, Black };
+    public enum PieceTeam { Enemy, Ally };
+    public enum PieceType { King, Queen, Bishop, Rook, Knight, Pawn };
+    public enum MoveMode { Normal, Attack, Movement };
+
+    /// <summary>
+    /// Figur
+    /// </summary>
+    public abstract class Piece
+    {
+        public PieceColor color;
+        public PieceType type;
+        public Dictionary<Field, PieceTeam> validTargetSpots;
+        public Image image;
+        public bool HasMoved = false;
+        public Field field;
+        public bool EnPassantPossible = false; // Only in Pawn Class. Signs that this Piece has virtually not jumped two pieces, but one, reflective meaning: This.Figure can be attacked using Enpassant if this.type is Pawn
+        public override string ToString()
+        {
+            return type.ToString();
+        }
+
+        public Piece(Vector position, Grid fields)
+        {
+            this.field = fields[position];
+            fields[position].CurrentPiece = this;
+        }
+
+        public Dictionary<Field, PieceTeam> RefreshValidTargetSpots(Grid fields, MoveMode mode = MoveMode.Normal)
+        {
+            this.validTargetSpots = this.GetValidTargetFields(fields, mode);
+            return validTargetSpots;
+        }
+
+        internal void RemoveTargetFieldsWhereKingIsEndangered(Grid fields, Dictionary<Field, PieceTeam> targetFields)
+        {
+            Field ownKingLocation = fields.GetKing(this.color).field;
+            foreach (var virtualTargetField in targetFields)
+            {
+                if (fields.IsFieldVirtuallyEndagered(ownKingLocation, (this.color == PieceColor.Black ? PieceColor.White : PieceColor.Black), this, virtualTargetField.Key))
+                    targetFields.Remove(virtualTargetField.Key);
+            }
+        }
+
+        /// <summary>
+        /// Tests if the Move will leave your King endangered.
+        /// </summary>
+        /// <param name="fields">GameField</param>
+        /// <param name="pieceLocation">Location of Piece to move</param>
+        /// <param name="simulatedLocation">Location to move Piece to</param>
+        /// <param name="color">Color of Piece to move</param>
+        /// <returns>Bool</returns>
+        /*   internal static bool MoveWillEndangerOwnKing(Grid fields, Vector pieceLocation, Vector simulatedLocation, PieceColor color)
+           {
+               //    fields[simulateLocation].currentPiece = fields[pieceLocation].currentPiece;
+               //    fields[pieceLocation].currentPiece = null;
+               // Check if own king is endangered
+               return FieldIsEndangered(fields, simulatedLocation, kingLocation, color, dontTestKingDanger: true);
+           }*/
+
+        /// <summary>
+        /// Checks if a specific field can be reached by the figure while a virtual move is simulated
+        /// </summary>
+        /// <param name="movePiece">Piece that virtually got moved</param>
+        /// <param name="targetPos">Field that the movePiece virtually moved to</param>
+        /// <param name="possibleEndageredField">Field that should be checked</param>
+        /// <param name="fields">Current Game Grid</param>
+        /// <returns></returns>
+        internal abstract bool EndageresFieldWithVirtualMove(Grid fields, Field possibleEndageredField, Piece movePiece, Field targetPos);
+
+        internal void Move(Field newPieceField)
+        {
+            this.field.CurrentPiece = null; // Remove piece from previous position
+            this.field = newPieceField; // Set pieces location to new field
+            newPieceField.CurrentPiece = this; // Set new fields piece to this
+        }
+
+        /// <summary>
+        /// Tests if the Move will leave your movedPiece endangered.
+        /// </summary>
+        /// <param name="fields">GameField</param>
+        /// <param name="pieceLocation">Location of Piece to move</param>
+        /// <param name="testLocation">Location to move Piece to</param>
+        /// <param name="color">Color of Piece to move</param>
+        /// <returns>Bool</returns>
+        //internal static bool MoveWillEndangerPiece(Grid fields, Vector pieceLocation, Vector testLocation, PieceColor color)
+        //{
+        //    return false;
+        //    //Grid simulatedField = fields;
+        //    //simulatedField[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece = null;
+        //    //return FieldIsEndangered(fields simulatedField, testLocation, color);
+        //}
+
+        /// <summary>
+        /// Tests if your King is currently endangered.
+        /// </summary>
+        /// <param name="fields">GameField</param>
+        /// <param name="color">Kings color</param>
+        /// <returns></returns>
+        //private static bool KingIsEndangered(Grid fields, PieceColor color) => FieldIsEndangered(fields, GetKingLocation(fields, color), color, dontTestKingDanger: true);
+        /// <summary>
+        /// Tests if the testLocation is endangered by an enemy.
+        /// </summary>
+        /// <param name="fields">GameField</param>
+        /// <param name="color">Ally Color</param>
+        /// <param name="testLocation">Location to test</param>
+        /// <returns>Bool</returns>
+        //private static bool FieldIsEndangered(Grid fields, Vector simulatedLocation, Vector testLocation, PieceColor color, bool dontTestKingDanger = false)
+        //{
+        //    foreach (Field field in fields)
+        //    {
+        //        if (field.location != simulatedLocation
+        //            && field.currentPiece != null
+        //            && field.currentPiece.color != color
+        //            && field.currentPiece.GetValidTargetFields(fields, dontTestKingDanger: dontTestKingDanger).ContainsKey(testLocation))
+        //            return true;
+        //    }
+        //    return false;
+        //}
+        /*internal static bool IsEndangeredLocationForPiece(Grid fields, Vector pieceLocation, Vector testLocation, PieceColor color)
+        {
+            bool returnValue = false;
+            Piece p = fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece;
+            fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece = null;
+            foreach (var field in fields)
+            {
+                if (field.currentPiece != null) if (field.currentPiece.color != color) if (field.currentPiece.GetValidTargetFields(fields, field.location, true).ContainsKey(testLocation))
+                        {
+                            returnValue = true;
+                            break;
+                        }
+            }
+            fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece = p;
+            return returnValue;
+        }*/
+        /*    internal static bool MoveWillEndangerKing(Grid fields, Vector pieceLocation, Vector pieceMovedLocation, PieceColor color) // This does not test if it is a valid move spot
+            {
+                bool returnValue = false;
+                Piece p1 = fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece;
+                Piece p2 = fields[(int)pieceMovedLocation.X, (int)pieceMovedLocation.Y].currentPiece;
+                fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece = null;
+                fields[(int)pieceMovedLocation.X, (int)pieceMovedLocation.Y].currentPiece = p1;
+                returnValue = KingIsEndangered(fields, color);
+                fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece = p1;
+                fields[(int)pieceMovedLocation.X, (int)pieceMovedLocation.Y].currentPiece = p2;
+                return returnValue;
+            }*/
+        /*  private static bool KingIsEndangered(Grid fields, PieceColor color)
+          {
+              Vector kingLocation = GetKingLocation(fields, color);
+              foreach (var field in fields)
+              {
+                  if (field.currentPiece == null || field.currentPiece.color != color)
+                      continue;
+                  if (field.currentPiece.GetValidTargetFields(fields, field.location, dontTestKingDanger: true).ContainsKey(kingLocation))
+                  {
+                      return true;
+                  }
+              }
+              return false;
+          }*/
+        /// <summary>
+        /// Searches for the King of the given color.
+        /// </summary>
+        /// <param name="fields">GameField</param>
+        /// <param name="color">Kings color</param>
+        /// <returns>King location as Vector</returns>
+        private static Vector GetKingLocation(Grid fields, PieceColor color)
+        {
+            foreach (Field field in fields)
+                if (!field.IsEmpty && field.currentPiece.type == PieceType.King && field.currentPiece.color == color)
+                    return field.location;
+            throw new Exception("King not found!");
+        }
+        virtual internal Dictionary<Field, PieceTeam> GetValidTargetFields(Grid fields, MoveMode mode = MoveMode.Normal, bool dontTestKingDanger = false)
+        {
+            var targetFields = GetTargetFields(fields, field, this.color);
+            if (!dontTestKingDanger)
+            {
+                Field kinglocation = fields.GetKing(this.color).field;
+                List<Field> remove = new List<Field>();
+
+                foreach (var item in targetFields.Keys)
+                {
+                    if (fields.IsFieldVirtuallyEndagered(kinglocation, (this.color == PieceColor.Black ? PieceColor.White : PieceColor.Black), this, item))
+                        remove.Add(item);
+                }
+                foreach (var item in remove)
+                {
+                    targetFields.Remove(item);
+                }
+            }
+            return targetFields;
+        }
+        internal abstract Dictionary<Field, PieceTeam> GetTargetFields(Grid fields, Field field, PieceColor color);
+        internal static bool FieldIsVirtuallyEmpty(Field targetPos, Field skipField, Field possibleTargetField)
+        {
+            return (possibleTargetField.IsEmpty && possibleTargetField != targetPos)
+                || possibleTargetField == skipField;
+        }
+        internal static bool CheckFieldCanBeReached(Field possibleEndageredField, Field targetPos, Piece movePiece, Field possibleTargetField, PieceColor color, out bool breakIt)
+        {
+            breakIt = false;
+
+            var skipField = movePiece.field;
+            if (FieldIsVirtuallyEmpty(targetPos, skipField, possibleTargetField))
+            {
+                if (possibleTargetField == possibleEndageredField)
+                    return true;
+            }
+            else
+            {
+                var checkPiece = possibleTargetField == targetPos ? movePiece : possibleTargetField.CurrentPiece;
+
+                if (checkPiece.color != color && possibleTargetField == possibleEndageredField)
+                    return true;
+                breakIt=true;
+            }
+            return false;
+        }
+        //internal abstract Dictionary<Field, PieceTeam> GetValidTargetFields(Grid fields, MoveMode mode = MoveMode.Any, bool dontTestKingDanger = false);
+    }
+}

ChessPanel/Pieces/AbstractPiece.txt

@@ -0,0 +1,226 @@
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using ChessPanel;
+using System.Linq;
+using System.Windows;
+
+namespace Chess
+{
+    public enum PieceColor { White, Black };
+    public enum PieceTeam { Enemy, Ally };
+    public enum PieceType { King, Queen, Bishop, Rook, Knight, Pawn };
+    public enum MoveMode { Any, Attack, Movement };
+
+    /// <summary>
+    /// Figur
+    /// </summary>
+    public abstract class Piece
+    {
+        public PieceColor color;
+        public PieceType type;
+        public Image image;
+        public bool HasMoved = false;
+        public Field field;
+        private Vector virtualPosition;//?
+        public bool EnPassantPossible = false; // Only in Pawn Class. Signs that this Piece has virtually not jumped two pieces, but one, reflective meaning: This.Figure can be attacked using Enpassant if this.type is Pawn
+        public override string ToString()
+        {
+            return type.ToString();
+        }
+
+        public Piece(Vector position, Grid fields)
+        {
+            this.field = fields[position];
+            fields[position].CurrentPiece = this;
+        }
+
+        internal void removeTargetFieldsWhereKingIsEndangered(Grid fields, Dictionary<Field, PieceTeam> targetFields)
+        {
+            Field ownKingLocation = fields.GetKing(this.color).field;
+            foreach (var virtualTargetField in targetFields)
+            {
+                if (fields.IsFieldVirtuallyEndagered(ownKingLocation, (this.color == PieceColor.Black ? PieceColor.White : PieceColor.Black), this, virtualTargetField.Key))
+                    targetFields.Remove(virtualTargetField.Key);
+            }
+        }
+
+        /// <summary>
+        /// Tests if the Move will leave your King endangered.
+        /// </summary>
+        /// <param name="fields">GameField</param>
+        /// <param name="pieceLocation">Location of Piece to move</param>
+        /// <param name="simulatedLocation">Location to move Piece to</param>
+        /// <param name="color">Color of Piece to move</param>
+        /// <returns>Bool</returns>
+        /*   internal static bool MoveWillEndangerOwnKing(Grid fields, Vector pieceLocation, Vector simulatedLocation, PieceColor color)
+           {
+               //    fields[simulateLocation].currentPiece = fields[pieceLocation].currentPiece;
+               //    fields[pieceLocation].currentPiece = null;
+               // Check if own king is endangered
+               return FieldIsEndangered(fields, simulatedLocation, kingLocation, color, dontTestKingDanger: true);
+           }*/
+
+        /// <summary>
+        /// Checks if a specific field can be reached by the figure while a virtual move is simulated
+        /// </summary>
+        /// <param name="movePiece">Piece that virtually got moved</param>
+        /// <param name="targetPos">Field that the movePiece virtually moved to</param>
+        /// <param name="possibleEndageredField">Field that should be checked</param>
+        /// <param name="fields">Current Game Grid</param>
+        /// <returns></returns>
+        internal abstract bool EndageresFieldWithVirtualMove(Grid fields, Field possibleEndageredField, Piece movePiece, Field targetPos);
+
+        internal void Move(Field newPieceField)
+        {
+            this.field.CurrentPiece = null; // Remove piece from previous position
+            this.field = newPieceField; // Set pieces location to new field
+            newPieceField.CurrentPiece = this; // Set new fields piece to this
+        }
+
+        /// <summary>
+        /// Tests if the Move will leave your movedPiece endangered.
+        /// </summary>
+        /// <param name="fields">GameField</param>
+        /// <param name="pieceLocation">Location of Piece to move</param>
+        /// <param name="testLocation">Location to move Piece to</param>
+        /// <param name="color">Color of Piece to move</param>
+        /// <returns>Bool</returns>
+        //internal static bool MoveWillEndangerPiece(Grid fields, Vector pieceLocation, Vector testLocation, PieceColor color)
+        //{
+        //    return false;
+        //    //Grid simulatedField = fields;
+        //    //simulatedField[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece = null;
+        //    //return FieldIsEndangered(fields simulatedField, testLocation, color);
+        //}
+
+        /// <summary>
+        /// Tests if your King is currently endangered.
+        /// </summary>
+        /// <param name="fields">GameField</param>
+        /// <param name="color">Kings color</param>
+        /// <returns></returns>
+        //private static bool KingIsEndangered(Grid fields, PieceColor color) => FieldIsEndangered(fields, GetKingLocation(fields, color), color, dontTestKingDanger: true);
+        /// <summary>
+        /// Tests if the testLocation is endangered by an enemy.
+        /// </summary>
+        /// <param name="fields">GameField</param>
+        /// <param name="color">Ally Color</param>
+        /// <param name="testLocation">Location to test</param>
+        /// <returns>Bool</returns>
+        //private static bool FieldIsEndangered(Grid fields, Vector simulatedLocation, Vector testLocation, PieceColor color, bool dontTestKingDanger = false)
+        //{
+        //    foreach (Field field in fields)
+        //    {
+        //        if (field.location != simulatedLocation
+        //            && field.currentPiece != null
+        //            && field.currentPiece.color != color
+        //            && field.currentPiece.GetValidTargetFields(fields, dontTestKingDanger: dontTestKingDanger).ContainsKey(testLocation))
+        //            return true;
+        //    }
+        //    return false;
+        //}
+        /*internal static bool IsEndangeredLocationForPiece(Grid fields, Vector pieceLocation, Vector testLocation, PieceColor color)
+        {
+            bool returnValue = false;
+            Piece p = fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece;
+            fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece = null;
+            foreach (var field in fields)
+            {
+                if (field.currentPiece != null) if (field.currentPiece.color != color) if (field.currentPiece.GetValidTargetFields(fields, field.location, true).ContainsKey(testLocation))
+                        {
+                            returnValue = true;
+                            break;
+                        }
+            }
+            fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece = p;
+            return returnValue;
+        }*/
+        /*    internal static bool MoveWillEndangerKing(Grid fields, Vector pieceLocation, Vector pieceMovedLocation, PieceColor color) // This does not test if it is a valid move spot
+            {
+                bool returnValue = false;
+                Piece p1 = fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece;
+                Piece p2 = fields[(int)pieceMovedLocation.X, (int)pieceMovedLocation.Y].currentPiece;
+                fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece = null;
+                fields[(int)pieceMovedLocation.X, (int)pieceMovedLocation.Y].currentPiece = p1;
+                returnValue = KingIsEndangered(fields, color);
+                fields[(int)pieceLocation.X, (int)pieceLocation.Y].currentPiece = p1;
+                fields[(int)pieceMovedLocation.X, (int)pieceMovedLocation.Y].currentPiece = p2;
+                return returnValue;
+            }*/
+        /*  private static bool KingIsEndangered(Grid fields, PieceColor color)
+          {
+              Vector kingLocation = GetKingLocation(fields, color);
+              foreach (var field in fields)
+              {
+                  if (field.currentPiece == null || field.currentPiece.color != color)
+                      continue;
+                  if (field.currentPiece.GetValidTargetFields(fields, field.location, dontTestKingDanger: true).ContainsKey(kingLocation))
+                  {
+                      return true;
+                  }
+              }
+              return false;
+          }*/
+        /// <summary>
+        /// Searches for the King of the given color.
+        /// </summary>
+        /// <param name="fields">GameField</param>
+        /// <param name="color">Kings color</param>
+        /// <returns>King location as Vector</returns>
+        private static Vector GetKingLocation(Grid fields, PieceColor color)
+        {
+            foreach (Field field in fields)
+                if (!field.IsEmpty && field.currentPiece.type == PieceType.King && field.currentPiece.color == color)
+                    return field.location;
+            throw new Exception("King not found!");
+        }
+        virtual internal Dictionary<Field, PieceTeam> GetValidTargetFields(Grid fields, MoveMode mode = MoveMode.Any, bool dontTestKingDanger = false)
+        {
+            var targetFields = GetTargetFields(fields, field, this.color);
+            if (!dontTestKingDanger)
+            {
+                Field kinglocation = fields.GetKing(this.color).field;
+                List<Field> remove = new List<Field>();
+
+                foreach (var item in targetFields.Keys)
+                {
+                    if (fields.IsFieldVirtuallyEndagered(kinglocation, (this.color == PieceColor.Black ? PieceColor.White : PieceColor.Black), this, item))
+                        remove.Add(item);
+                }
+                foreach (var item in remove)
+                {
+                    targetFields.Remove(item);
+                }
+            }
+            return targetFields;
+        }
+        internal abstract Dictionary<Field, PieceTeam> GetTargetFields(Grid fields, Field field, PieceColor color);
+        internal static bool FieldIsVirtuallyEmpty(Field targetPos, Field skipField, Field possibleTargetField)
+        {
+            return (possibleTargetField.IsEmpty && possibleTargetField != targetPos)
+                || possibleTargetField == skipField;
+        }
+        internal static bool checkFieldCanBeReached(Field possibleEndageredField, Field targetPos, Piece movePiece, Field possibleTargetField, PieceColor color, out bool breakIt)
+        {
+            breakIt = false;
+
+            var skipField = movePiece.field;
+            if (FieldIsVirtuallyEmpty(targetPos, skipField, possibleTargetField))
+            {
+                if (possibleTargetField == possibleEndageredField)
+                    return true;
+            }
+            else
+            {
+                var checkPiece = possibleTargetField == targetPos ? movePiece : possibleTargetField.CurrentPiece;
+
+                if (checkPiece.color != color && possibleTargetField == possibleEndageredField)
+                    return true;
+                breakIt=true;
+            }
+            return false;
+        }
+        //internal abstract Dictionary<Field, PieceTeam> GetValidTargetFields(Grid fields, MoveMode mode = MoveMode.Any, bool dontTestKingDanger = false);
+    }
+}

ChessPanel/Pieces/Bishop.cs

@@ -0,0 +1,143 @@
+using Chess;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Windows;
+
+namespace ChessPanel
+{
+    public class Bishop : Piece
+    {
+        public Bishop(PieceColor color, Vector position, Grid fields) : base(position, fields)
+        {
+            type = (PieceType)Enum.Parse(typeof(PieceType), this.GetType().Name);
+            this.color = color;
+            this.image = (Image)ChessPanel.Properties.Resources.ResourceManager.GetObject($"{this.type.ToString()}{this.color.ToString()}");
+        }
+
+        private static bool AddFieldToTargetFields(Grid fields, Field field, int x, int y, Dictionary<Field, PieceTeam> targetFields, PieceColor color)
+        {
+            if (fields[field.location, x, y].IsEmpty)
+            {
+                targetFields.Add(fields[field.location, x, y], PieceTeam.Ally);
+            }
+            else
+            {
+                if (fields[field.location, x, y].CurrentPiece?.color != color)
+                    targetFields.Add(fields[field.location, x, y], PieceTeam.Enemy);
+                return true;
+            }
+            return false;
+        }
+        internal override Dictionary<Field, PieceTeam> GetTargetFields(Grid fields, Field field, PieceColor color)
+        {
+            return StaticGetTargetFields(fields, field, color);
+        }
+        internal static Dictionary<Field, PieceTeam> StaticGetTargetFields(Grid fields, Field field, PieceColor color)
+        {
+            Dictionary<Field, PieceTeam> targetFields = new Dictionary<Field, PieceTeam>();
+
+            #region nach RechtsOben
+            for (int xy = 1; xy <= 7; xy++)
+            {
+                if (CheckOutOfBounds(field, xy, xy) || AddFieldToTargetFields(fields, field, xy, xy, targetFields, color))
+                    break;
+            }
+            #endregion
+
+            // LinksOben
+            for (int xy = 1; xy <= 7; xy++)
+            {
+                if (CheckOutOfBounds(field, -xy, xy) || AddFieldToTargetFields(fields, field, -xy, xy, targetFields, color))
+                    break;
+            }
+
+            // RechtsUnten
+            for (int xy = 1; xy <= 7; xy++)
+            {
+                if (CheckOutOfBounds(field, xy, -xy) || AddFieldToTargetFields(fields, field, xy, -xy, targetFields, color))
+                    break;
+            }
+
+            // LinksUnten
+            for (int xy = 1; xy <= 7; xy++)
+            {
+                if (CheckOutOfBounds(field, -xy, -xy) || AddFieldToTargetFields(fields, field, -xy, -xy, targetFields, color))
+                    break;
+            }
+            return targetFields;
+        }
+
+        private static bool CheckOutOfBounds(Field field, int x, int y)
+        {
+            return field.location.X + x > 7 || (int)field.location.Y + y > 7
+                || field.location.X + x < 0 || (int)field.location.Y + y < 0;
+        }
+
+        /// <summary>
+        /// 
+        /// </summary>
+        /// <param name="fields">Global Field Grid</param>
+        /// <param name="field">Field that should be checked for endager</param>
+        /// <param name="movePiece">Piece that should be moved</param>
+        /// <param name="targetPos">Target of the moved piece</param>
+        /// <returns></returns>
+        internal override bool EndageresFieldWithVirtualMove(Grid fields, Field possibleEndageredField, Piece movePiece, Field targetPos)
+        {
+            return StaticEndageresFieldWithVirtualMove(fields, this.field, possibleEndageredField, movePiece, targetPos, color);
+        }
+
+        internal static bool StaticEndageresFieldWithVirtualMove(Grid fields, Field thisField, Field possibleEndageredField, Piece movePiece, Field targetPos, PieceColor color)
+        {
+            var skipField = movePiece.field;
+
+            for (int xy = 1; xy <= 7; xy++) // nach RechtsOben
+            {
+                if (thisField.location.X + xy > 7 || thisField.location.Y + xy > 7)
+                    break;
+
+                var possibleTargetField = fields.GetFieldWithOffset(thisField, xy, xy);
+
+                if (CheckFieldCanBeReached(possibleEndageredField, targetPos, movePiece, possibleTargetField, color, out bool breakIt))
+                    return true;
+                if (breakIt)
+                    break;
+            }
+
+            for (int xy = 1; xy <= 7; xy++)
+            {
+                if (thisField.location.X - xy < 0 || thisField.location.Y + xy > 7) // LinksOben
+                    break;
+                var possibleTargetField = fields.GetFieldWithOffset(thisField, -xy, xy);
+
+                if (CheckFieldCanBeReached(possibleEndageredField, targetPos, movePiece, possibleTargetField, color, out bool breakIt))
+                    return true;
+                if (breakIt)
+                    break;
+            }
+            for (int xy = 1; xy <= 7; xy++)
+            {
+                if (thisField.location.X + xy > 7 || thisField.location.Y - xy < 0) // RechtsUnten
+                    break;
+                var possibleTargetField = fields.GetFieldWithOffset(thisField, xy, -xy);
+
+                if (CheckFieldCanBeReached(possibleEndageredField, targetPos, movePiece, possibleTargetField, color, out bool breakIt))
+                    return true;
+                if (breakIt)
+                    break;
+            }
+            for (int xy = 1; xy <= 7; xy++)
+            {
+                if (thisField.location.X - xy < 0 || thisField.location.Y - xy < 0) // LinksUnten
+                    break;
+                var possibleTargetField = fields.GetFieldWithOffset(thisField, -xy, -xy);
+
+                if (CheckFieldCanBeReached(possibleEndageredField, targetPos, movePiece, possibleTargetField, color, out bool breakIt))
+                    return true;
+                if (breakIt)
+                    break;
+            }
+            return false;
+        }
+    } // FINALIZED
+}

ChessPanel/Pieces/King.cs

@@ -0,0 +1,132 @@
+using Chess;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Windows;
+
+namespace ChessPanel
+{
+    public class King : Piece
+    {
+        public King(PieceColor color, Vector position, Grid fields) : base(position, fields)
+        {
+            type = (PieceType)Enum.Parse(typeof(PieceType), this.GetType().Name);
+            this.color = color;
+            this.image = (Image)ChessPanel.Properties.Resources.ResourceManager.GetObject($"{this.type.ToString()}{this.color.ToString()}");
+        }
+
+        internal override bool EndageresFieldWithVirtualMove(Grid fields, Field field, Piece movePiece, Field targetPos)
+        {
+            //#region Movement: 1 in every direction
+            //for (int x = -1; x < 2; x++)
+            //{
+            //    for (int y = -1; y < 2; y++)
+            //    {
+            //        if ((x == 0 && y == 0) || field.location.X + x > 7 || field.location.Y + y > 7 || field.location.X + x < 0 || field.location.Y + y < 0)
+            //            continue;
+            //        if (!fields.IsFieldVirtuallyEndagered(fields[field.location, x, y], (this.color == PieceColor.Black ? PieceColor.White : PieceColor.Black), this, fields[field.location, x, y]))
+            //            if ((fields[field.location, x, y].IsEmpty && fields[field.location, x, y] != targetPos) || fields[field.location, x, y] == movePiece.field)
+            //            {
+            //                if (fields[field.location, x, y] == field)
+            //                    return true;
+            //                continue;
+            //            }
+            //            else
+            //            {
+            //                if (fields[field.location, x, y].currentPiece.color != color)
+            //                    if (fields[field.location, x, y] == field)
+            //                        return true;
+            //                break;
+            //            }
+            //    }
+            //}
+            //#endregion
+            return false;
+        }
+
+        internal override Dictionary<Field, PieceTeam> GetValidTargetFields(Grid fields, MoveMode mode = MoveMode.Normal, bool dontTestKingDanger = false)
+        {
+            var targetFields = GetTargetFields(fields, field, this.color);
+            if (!dontTestKingDanger)
+            {
+                List<Field> remove = new List<Field>();
+
+                foreach (var virtualKinglocation in targetFields.Keys)
+                {
+                    if (fields.IsFieldVirtuallyEndagered(virtualKinglocation, (this.color == PieceColor.Black ? PieceColor.White : PieceColor.Black), this, virtualKinglocation))
+                        remove.Add(virtualKinglocation);
+                }
+                foreach (var item in remove)
+                {
+                    targetFields.Remove(item);
+                }
+            }
+            return targetFields;
+        }
+
+        internal override Dictionary<Field, PieceTeam> GetTargetFields(Grid fields, Field field, PieceColor color)
+        {
+            Dictionary<Field, PieceTeam> targetFields = new Dictionary<Field, PieceTeam>();
+            #region Castling
+            if (!this.HasMoved && false) // Only Castle if King did not move
+                foreach (Field item in fields)
+                {
+                    var itemLocation = item.location;
+                    // Sucht nach Ally Turm und prüft, ob er sich schon bewegt hat
+                    if (item.currentPiece != null && item.currentPiece.type == PieceType.Rook && !item.currentPiece.HasMoved && item.currentPiece.color == this.color)
+                    {
+                        if (itemLocation.X == 0 || itemLocation.X == 7)
+                        {
+                            bool castling = true;
+                            for (int x = (itemLocation.X == 0 ? 1 : 5); (itemLocation.X == 0 ? x < 4 : x < 7); x++)
+                            {
+                                if (!fields[x, (int)field.location.Y].IsEmpty)
+                                {
+                                    castling = false;
+                                    break;
+                                }
+                            }
+                            if (castling) // Only Check endangered Fields if castling is generally possible
+                            {
+                                for (int x = (itemLocation.X == 0 ? 2 : 4); x < (itemLocation.X == 0 ? 5 : 7); x++) // König steht im Schach oder überschreitet bedrohtes Feld
+                                {
+                                    if (fields.IsFieldVirtuallyEndagered(fields[x, field.location.Y], (this.color == PieceColor.Black ? PieceColor.White : PieceColor.Black), this, fields[x, field.location.Y]))
+                                    {
+                                        castling = false;
+                                        break;
+                                    }
+                                }
+                                if (castling)
+                                {
+                                    targetFields.Add(fields[(itemLocation.X == 0 ? 2 : 6), itemLocation.Y], PieceTeam.Ally);
+                                }
+                            }
+                        }
+                    }
+                }
+            #endregion
+            #region Movement: 1 in every direction
+            for (int x = -1; x < 2; x++)
+            {
+                for (int y = -1; y < 2; y++)
+                {
+                    if ((x == 0 && y == 0) || field.location.X + x > 7 || field.location.Y + y > 7 || field.location.X + x < 0 || field.location.Y + y < 0)
+                        continue;
+
+                    if (fields[field.location, x, y].IsEmpty)
+                    {
+                        targetFields.Add(fields[field.location, x, y], PieceTeam.Ally);
+                    }
+                    else
+                    {
+                        if (fields[field.location, x, y].currentPiece.color != color)
+                            targetFields.Add(fields[field.location, x, y], PieceTeam.Enemy);
+                        continue;
+                    }
+                }
+            }
+            #endregion
+            return targetFields;
+        }
+    } // CHECKMATE/CHECK-TEST MISSING
+}

ChessPanel/Pieces/Knight.cs

@@ -0,0 +1,98 @@
+using Chess;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Windows;
+
+namespace ChessPanel
+{
+    public class Knight : Piece
+    {
+        public Knight(PieceColor color, Vector position, Grid fields) : base(position, fields)
+        {
+            type = (PieceType)Enum.Parse(typeof(PieceType), this.GetType().Name);
+            this.color = color;
+            this.image = (Image)ChessPanel.Properties.Resources.ResourceManager.GetObject($"{this.type.ToString()}{this.color.ToString()}");
+        }
+
+        internal override bool EndageresFieldWithVirtualMove(Grid fields, Field field, Piece movePiece, Field targetPos)
+        {
+            for (int a = -1; a < 2; a += 2)
+            {
+                for (int b = -2; b < 3; b += 4)
+                {
+                    if (!(a + (int)field.location.X > 7 || b + (int)field.location.Y < 0 || a + (int)field.location.X < 0 || b + (int)field.location.Y > 7))
+                    {
+                        if ((fields[field.location,a,b].IsEmpty && fields[field.location, a, b] != targetPos) || fields[field.location, a, b] == movePiece.field)
+                        {
+                            if (fields[field.location, a, b] == field)
+                                return true;
+                            continue;
+                        }
+                        else
+                        {
+                            if (fields[field.location, a, b].CurrentPiece?.color != color)
+                                if (fields[field.location, a, b] == field)
+                                    return true;
+                            break;
+                        }
+                    }
+                    if (!(b + (int)field.location.X > 7 || a + (int)field.location.Y < 0 || b + (int)field.location.X < 0 || a + (int)field.location.Y > 7))
+                    {
+                        if ((fields[field.location, b, a].IsEmpty && fields[field.location, b, a] != targetPos) || fields[field.location, b, a] == movePiece.field)
+                        {
+                            if (fields[field.location, b, a] == field)
+                                return true;
+                            continue;
+                        }
+                        else
+                        {
+                            if (fields[field.location, b, a].CurrentPiece?.color != color)
+                                if (fields[field.location, b, a] == field)
+                                    return true;
+                            break;
+                        }
+                    }
+                }
+            }
+            return false;
+        }
+
+        internal override Dictionary<Field, PieceTeam> GetTargetFields(Grid fields, Field field, PieceColor color)
+        {
+            Dictionary<Field, PieceTeam> targetFields = new Dictionary<Field, PieceTeam>();
+
+            for (int a = -1; a < 2; a += 2)
+            {
+                for (int b = -2; b < 3; b += 4)
+                {
+                    if (!(a + (int)field.location.X > 7 || b + (int)field.location.Y < 0 || a + (int)field.location.X < 0 || b + (int)field.location.Y > 7))
+                    {
+                        if (fields[field.location,a,b].IsEmpty)
+                        {
+                            targetFields.Add(fields[field.location, a, b], PieceTeam.Ally);
+                        }
+                        else
+                        {
+                            if (fields[field.location, a, b].CurrentPiece?.color != color)
+                                targetFields.Add(fields[field.location, a, b], PieceTeam.Enemy);
+                        }
+                    }
+                    if (!(b + (int)field.location.X > 7 || a + (int)field.location.Y < 0 || b + (int)field.location.X < 0 || a + (int)field.location.Y > 7))
+                    {
+                        if (fields[field.location, b, a].IsEmpty)
+                        {
+                            targetFields.Add(fields[field.location, b, a], PieceTeam.Ally);
+                        }
+                        else
+                        {
+                            if (fields[field.location, b, a].CurrentPiece?.color != color)
+                                targetFields.Add(fields[field.location, b, a], PieceTeam.Enemy);
+                        }
+                    }
+                }
+            }
+            return targetFields;
+        }
+    } // FINALIZED
+}

ChessPanel/Pieces/Pawn.cs

@@ -0,0 +1,80 @@
+using Chess;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Windows;
+
+namespace ChessPanel
+{
+    public class Pawn : Piece
+    {
+        public Pawn(PieceColor color, Vector position, Grid fields) : base(position, fields)
+        {
+            type = (PieceType)Enum.Parse(typeof(PieceType), this.GetType().Name);
+            this.color = color;
+            this.image = (Image)ChessPanel.Properties.Resources.ResourceManager.GetObject($"{this.type.ToString()}{this.color.ToString()}");
+        }
+
+        internal override bool EndageresFieldWithVirtualMove(Grid fields, Field field, Piece movePiece, Field targetPos) // Pawn does not care about virtually moved pieces, if field is in range it can attack
+        {
+            int direction = this.color == PieceColor.White ? -1 : 1;
+            #region Attack
+            for (int x = -1; x < 2; x += 2)
+            {
+                if (field.location.Y + (direction) > 7 || field.location.Y + (direction) < 0 || field.location.X + x > 7 || field.location.X + x < 0)
+                    continue;
+                if (fields[field.location, x, direction] == field)
+                    return true;
+            }
+            #endregion
+            return false;
+        }
+
+        internal override Dictionary<Field, PieceTeam> GetTargetFields(Grid fields, Field field, PieceColor color)
+        {
+            MoveMode mode = MoveMode.Normal;
+
+            Dictionary<Field, PieceTeam> targetFields = new Dictionary<Field, PieceTeam>();
+            int direction = this.color == PieceColor.White ? -1 : 1;
+            #region Movement    
+            if (mode == MoveMode.Normal || mode == MoveMode.Movement)
+                for (int y = 1; y < 1 + (HasMoved ? 1 : 2); y++)
+                {
+                    if (field.location.Y + (direction * y) > 7 || field.location.Y + (direction * y) < 0)
+                        break;
+                    if (fields[field.location, 0, (direction * y)].IsEmpty)
+                        targetFields.Add(fields[field.location, 0, (direction * y)], PieceTeam.Ally);
+                    else
+                        break;
+                }
+            #endregion
+            #region Attack
+            if (mode == MoveMode.Normal || mode == MoveMode.Attack)
+            {
+                #region EnPassant
+                if (field.location.Y == (this.color == PieceColor.White ? 3 : 4))
+                    for (int x = -1; x < 2; x += 2)
+                        if (field.location.X + x <= 7 && field.location.X + x >= 0)
+                            if (fields[field.location, x, 0].CurrentPiece != null
+                                && fields[field.location, x, 0].CurrentPiece.type == PieceType.Pawn
+                                && fields[field.location, x, 0].CurrentPiece.color != this.color
+                                && fields[field.location, x, 0].CurrentPiece.EnPassantPossible)
+                                targetFields.Add(fields[field.location, x, direction], PieceTeam.Enemy);
+                #endregion
+                for (int x = -1; x < 2; x += 2)
+                {
+                    if (field.location.Y + (direction) > 7 || field.location.Y + (direction) < 0 || field.location.X + x > 7 || field.location.X + x < 0)
+                        continue;
+                    if (fields[field.location, x, direction].CurrentPiece != null && fields[field.location, x, direction].CurrentPiece.color != this.color)
+                    {
+                        targetFields.Add(fields[field.location, x, direction], PieceTeam.Enemy);
+                    }
+                }
+                #endregion
+            }
+            return targetFields;
+        }
+
+    }
+
+}

ChessPanel/Pieces/Queen.cs

@@ -0,0 +1,35 @@
+using Chess;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Linq;
+using System.Windows;
+
+namespace ChessPanel
+{
+    public class Queen : Piece
+    {
+        public Queen(PieceColor color, Vector position, Grid fields) : base(position, fields)
+        {
+            type = (PieceType)Enum.Parse(typeof(PieceType), this.GetType().Name);
+            this.color = color;
+            this.image = (Image)ChessPanel.Properties.Resources.ResourceManager.GetObject($"{this.type.ToString()}{this.color.ToString()}");
+        }
+
+        internal override bool EndageresFieldWithVirtualMove(Grid fields, Field possibleEndageredField, Piece movePiece, Field targetPos)
+        {
+            return Rook.StaticEndageresFieldWithVirtualMove(fields, this.field, possibleEndageredField, movePiece, targetPos, color)
+                || Bishop.StaticEndageresFieldWithVirtualMove(fields, this.field, possibleEndageredField, movePiece, targetPos, color);
+        }
+
+        internal override Dictionary<Field, PieceTeam> GetTargetFields(Grid fields, Field field, PieceColor color)
+        {
+            Dictionary<Field, PieceTeam> targetFields = Rook.StaticGetTargetFields(fields, field, this.color); // Take Rook fields
+            targetFields = targetFields.Concat(Bishop.StaticGetTargetFields(fields, field, this.color) // Add Bishop; Rook + Bishop = Queen
+                .Where(kvp => !targetFields.ContainsKey(kvp.Key)))
+                .OrderBy(c => c.Value)
+                .ToDictionary(c => c.Key, c => c.Value);
+            return targetFields;
+        }
+    } // FINALIZED
+}

ChessPanel/Pieces/Rook.cs

@@ -0,0 +1,141 @@
+using Chess;
+using System;
+using System.Collections.Generic;
+using System.Drawing;
+using System.Windows;
+
+namespace ChessPanel
+{
+    public class Rook : Piece
+    {
+        public Rook(PieceColor color, Vector position, Grid fields) : base(position, fields)
+        {
+            type = (PieceType)Enum.Parse(typeof(PieceType), this.GetType().Name);
+            this.color = color;
+            this.image = (Image)ChessPanel.Properties.Resources.ResourceManager.GetObject($"{this.type.ToString()}{this.color.ToString()}");
+        }
+        //internal override Dictionary<Field, PieceTeam> GetValidTargetFields(Grid fields, MoveMode mode = MoveMode.Any, bool dontTestKingDanger = false)
+        //{
+        //    var targetFields = GetTargetFields(fields, field, this.color);
+        //    if (!dontTestKingDanger)
+        //    {
+        //        Field kinglocation = fields.GetKing(this.color).field;
+        //        foreach (var item in targetFields)
+        //            if (fields.IsFieldVirtuallyEndagered(kinglocation, (this.color == PieceColor.Black ? PieceColor.White : PieceColor.Black), this, item.Key))
+        //                targetFields.Remove(item.Key);
+        //    }
+        //    return targetFields;
+        //}
+
+        internal override Dictionary<Field, PieceTeam> GetTargetFields(Grid fields, Field field, PieceColor color)
+        {
+            return StaticGetTargetFields(fields, field, color);
+        }
+        internal static Dictionary<Field, PieceTeam> StaticGetTargetFields(Grid fields, Field field, PieceColor color)
+        {
+            Dictionary<Field, PieceTeam> targetFields = new Dictionary<Field, PieceTeam>();
+            for (int x = (int)field.location.X - 1; x >= 0; x--) // nach Links
+            {
+                if (fields[x, field.location.Y].IsEmpty)
+                {
+                    targetFields.Add(fields[x, field.location.Y], PieceTeam.Ally);
+                }
+                else
+                {
+                    if (fields[x, (int)field.location.Y].currentPiece.color != color)
+                        targetFields.Add(fields[x, field.location.Y], PieceTeam.Enemy);
+                    break;
+                }
+            }
+            for (int x = (int)field.location.X + 1; x <= 7; x++) // nach Rechts
+            {
+                if (fields[x, (int)field.location.Y].IsEmpty)
+                {
+                    targetFields.Add(fields[x, field.location.Y], PieceTeam.Ally);
+                }
+                else
+                {
+                    if (fields[x, (int)field.location.Y].currentPiece.color != color)
+                        targetFields.Add(fields[x, field.location.Y], PieceTeam.Enemy);
+                    break;
+                }
+            }
+            for (int y = (int)field.location.Y - 1; y >= 0; y--) // nach Unten
+            {
+                if (fields[(int)field.location.X, y].IsEmpty)
+                {
+                    targetFields.Add(fields[field.location.X, y], PieceTeam.Ally);
+                }
+                else
+                {
+                    if (fields[(int)field.location.X, y].currentPiece.color != color)
+                        targetFields.Add(fields[field.location.X, y], PieceTeam.Enemy);
+                    break;
+                }
+            }
+            for (int y = (int)field.location.Y + 1; y <= 7; y++) // nach Oben
+            {
+                if (fields[(int)field.location.X, y].IsEmpty)
+                {
+                    targetFields.Add(fields[field.location.X, y], PieceTeam.Ally);
+                }
+                else
+                {
+                    if (fields[(int)field.location.X, y].currentPiece.color != color)
+                        targetFields.Add(fields[field.location.X, y], PieceTeam.Enemy);
+                    break;
+                }
+            }
+            return targetFields;
+        }
+
+        internal override bool EndageresFieldWithVirtualMove(Grid fields, Field possibleEndageredField, Piece movePiece, Field targetPos)
+        {
+            return StaticEndageresFieldWithVirtualMove(fields, this.field, possibleEndageredField, movePiece, targetPos, color);
+        }
+
+        internal static bool StaticEndageresFieldWithVirtualMove(Grid fields, Field thisField, Field possibleEndageredField, Piece movePiece, Field targetPos, PieceColor color)
+        {
+            if (possibleEndageredField.location.X != thisField.location.X && possibleEndageredField.location.Y != thisField.location.Y) // Field can not be reached horizontally nor vertically
+                return false;
+
+            for (int x = (int)thisField.location.X - 1; x >= 0; x--) // nach Links
+            {
+                var possibleTargetField = fields[x, thisField.location.Y];
+
+                if (CheckFieldCanBeReached(possibleEndageredField, targetPos, movePiece, possibleTargetField, color, out bool breakIt))
+                    return true;
+                if (breakIt)
+                    break;
+            }
+            for (int x = (int)thisField.location.X + 1; x <= 7; x++) // nach Rechts
+            {
+                var possibleTargetField = fields[x, thisField.location.Y];
+
+                if (CheckFieldCanBeReached(possibleEndageredField, targetPos, movePiece, possibleTargetField, color, out bool breakIt))
+                    return true;
+                if (breakIt)
+                    break;
+            }
+            for (int y = (int)thisField.location.Y - 1; y >= 0; y--) // nach Oben
+            {
+                var possibleTargetField = fields[thisField.location.X, y];
+
+                if (CheckFieldCanBeReached(possibleEndageredField, targetPos, movePiece, possibleTargetField, color, out bool breakIt))
+                    return true;
+                if (breakIt)
+                    break;
+            }
+            for (int y = (int)thisField.location.Y + 1; y <= 7; y++) // nach Unten
+            {
+                var possibleTargetField = fields[thisField.location.X, y];
+
+                if (CheckFieldCanBeReached(possibleEndageredField, targetPos, movePiece, possibleTargetField, color, out bool breakIt))
+                    return true;
+                if (breakIt)
+                    break;
+            }
+            return false;
+        }
+    } // FINALIZED
+}