encore

OOP_1A2_Project/src/backend/Board.java

@@ -35,6 +35,7 @@ public class Board {
     }
 
 	public void setPiece(boolean isWhite, PieceType type, int x, int y) {
+		pieces.removeIf(p -> p.getX() == x && p.getY() == y);
 		Piece newPiece = new Piece( x, y, type,isWhite);
 	    pieces.add(newPiece);
 	}