before deleting Rules

Gameboard.ShogiUI.Rules/Pieces/Lance.cs

@@ -0,0 +1,26 @@
+using PathFinding;
+using System.Collections.Generic;
+
+namespace Gameboard.ShogiUI.Rules.Pieces
+{
+  public class Lance : Piece
+  {
+    private static readonly List<PathFinding.Move> Moves = new(1)
+    {
+      new PathFinding.Move(Direction.Up, Distance.MultiStep),
+    };
+
+    public Lance(WhichPlayer owner) : base(WhichPiece.Lance, owner)
+    {
+      moveSet = new MoveSet(this, Moves);
+      promotedMoveSet = new MoveSet(this, GoldenGeneral.Moves);
+    }
+
+    public override Piece DeepClone()
+    {
+      var clone = new Lance(Owner);
+      if (IsPromoted) clone.Promote();
+      return clone;
+    }
+  }
+}