public static void removeOpponentCaptures(Board board, int opponent, int x, int y) {
		int boardSize = board.boardSize;
		if (x > 0) {
			removeIfCaptured(board, opponent, x - 1, y);
		}
		if (x < boardSize - 1) {
			removeIfCaptured(board, opponent, x + 1, y);
		}
		if (y > 0) {
			removeIfCaptured(board, opponent, x, y - 1);
		}
		if (y < boardSize - 1) {
			removeIfCaptured(board, opponent, x, y + 1);
		}
	}