Method stopFindingPin

src/main/java/game/Board.java:332–352

(int row, int col, Color color,
                                  Reference<Piece> blockingPiece, Map<Piece, Piece> blockingChecks,
                                  PieceType... attackerTypes)

    }

    public boolean stopFindingPin(int row, int col, Color color,
                                  Reference<Piece> blockingPiece, Map<Piece, Piece> blockingChecks,
                                  PieceType... attackerTypes) {
        if (!isEmpty(row, col)) {
            final Piece piece = getPiece(row, col);
            if (blockingPiece.object == null) {
                if (piece.color == color) {
                    blockingPiece.object = piece;
                    return false;
                } else {
                    return true;
                }
            } else {
                if (piece.color != color && Arrays.stream(attackerTypes).anyMatch(piece::sameType)) {
                    blockingChecks.put(blockingPiece.object, piece);
                }
                return true;
            }
        }
        return false;
    }

    private Set<Piece> attackingKing(Piece king) {
        final HashSet<Piece> attackers = new HashSet<>();