test to pull again

src/backend/Board.java

@@ -403,7 +403,7 @@ public class Board {
 	public Board(Board board) {
 		//TODO
 
-	}
+	}// test
 	
 	public void playMove(Move move) {
 	    // Save current state before move for undo
@@ -415,6 +415,12 @@ public class Board {
 	    board[move.getFromX()][move.getFromY()] = null;
 	    piece.x = move.getToX();
 	    piece.y = move.getToY();
+	    
+	    if (piece.getType() == PieceType.Pawn && 
+	            (piece.getY() == 0 || piece.getY() == height - 1)) {
+	            board[piece.getX()][piece.getY()] = promotePawn(piece.isWhite(), piece.getX(), piece.getY());
+	        }
+	    
 	    turn++;
 	}
 	
@@ -469,6 +475,10 @@ public class Board {
 	    return false; // King is not in check
 	}
 	
+	public static Piece promotePawn(boolean isWhite, int x, int y) {
+	    return new Piece(isWhite, PieceType.Queen, x, y);
+	}
+	
 	private void highlightKingInCheck() {
 	    // Check if white king is in check
 	    Piece whiteKing = findKing(true);