The bishop glides diagonally across the board, moving as many empty squares as it wants until something is in the way. Because it only moves on diagonals, a bishop is permanently restricted to the color square it starts on for the entire game. This means each player effectively has one “light-squared bishop” that never touches a dark square, and one “dark-squared bishop” that never touches a light square.
For experienced players
A pair of bishops working together on open diagonals is notoriously powerful because they slice across both colors, perfectly compensating for each other’s blind spots.
See also:Skewer·Boden's Mate