Zugzwang Required To Win
In some endgames it is necessary to place the opponent in zugzwang in order to force a win. These include:
- rook (and king) versus king checkmate
- two bishops versus king checkmate
- two knights versus pawn checkmate
- Bishop and knight checkmate
- queen versus rook
- queen versus knight
- queen versus two knights, and
- queen versus two bishops (Soltis 2003a:79).
In addition, zugzwang is required in many king and pawn versus king endgames in order to force promotion of the pawn and in other king and pawn endgames with more pawns (Müller & Pajeken 2008:173). (See pawnless chess endgame and fortress (chess) for some discussion of some of these endings.)
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