Method isEmpty

src/main/java/game/Board.java:74–76

(final int row, final int col)

    }

    public boolean isEmpty(final int row, final int col) {
        return pieces.get(Cell.get(row, col)) == null;
    }

    public Piece getPiece(final int row, final int col) {
        return pieces.get(Cell.get(row, col));