Good one

src/backend/Board.java

@@ -330,6 +330,27 @@ public void undoLastMove() {
 
 	}
 	
+	public void playMove(Move move) {
+		 Piece piece = move.getPieceMoved();
 
+		    // If a piece is captured, remove it from the board
+		    if (move.getPieceCaptured() != null) {
+		        pieces.remove(move.getPieceCaptured());
+		    }
+
+		    // Update the moved piece's position
+		    piece.setPosition(move.getToX(), move.getToY());
+
+		    // Save move in history for undo
+		    moveHistory.add(move);
+
+		    // Switch turn
+		    turnWhite = !turnWhite;
+		    turnNumber++;
+
+		    // Clear selection/highlight
+		    selected = null;
+		    highlighted.clear();
+		}
 
 }