before deleting Rules

Gameboard.ShogiUI.Rules/Pieces/Knight.cs

@@ -0,0 +1,27 @@
+using PathFinding;
+using System.Collections.Generic;
+
+namespace Gameboard.ShogiUI.Rules.Pieces
+{
+  public class Knight : Piece
+  {
+    private static readonly List<PathFinding.Move> Moves = new(2)
+    {
+      new PathFinding.Move(Direction.KnightLeft),
+      new PathFinding.Move(Direction.KnightRight)
+    };
+
+    public Knight(WhichPlayer owner) : base(WhichPiece.Knight, owner)
+    {
+      moveSet = new MoveSet(this, Moves);
+      promotedMoveSet = new MoveSet(this, GoldenGeneral.Moves);
+    }
+
+    public override Piece DeepClone()
+    {
+      var clone = new Knight(Owner);
+      if (IsPromoted) clone.Promote();
+      return clone;
+    }
+  }
+}