Zugzwang

Zugzwang (German for "compulsion to move") is a situation found in chess and other turn-based games wherein one player is put at a disadvantage because of their obligation to make a move; a player is said to be "in zugzwang" when any legal move will worsen their position. Black ultimately reached an endgame two pawns up, but White managed to hold a draw in 83 moves. See First-move advantage in chess#Symmetrical openings for more details.
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