The opposite-colored bishops endgame is a chess endgame in which each side has a single bishop, but the bishops reside on opposite-colored squares on the chessboard, thus cannot attack or block each other. Without other (but with pawns) these endings are widely known for their tendency to result in a draw. These are the most difficult endings in which to convert a small advantage to a win. With additional pieces, the stronger side has more chances to win, but not as many as when bishops are on the same color.