Chess960 puzzles: Only move
Everything else loses — find the only move that holds.
6689 puzzles
Attack on the uncastled king: bishop to c6 (e4·3)
Attack on the uncastled king: bishop to c3 (d2)
Attack on the uncastled king: queen to b2 (a3)
Attack on the uncastled king: pawn to e5 (d4·33)
Attack on the uncastled king: queen to b6 (b2)
Winning blow: knight to c7 (b5·2)
Attack on the uncastled king: rook to b8 (b1·4)
Attack on the uncastled king: bishop to e8 (a4)
Attack on the uncastled king: queen to f4 (c1·2)
Attack on the uncastled king: bishop to h8 (f6)
Attack on the uncastled king: knight to c4 (b2)
Attack on the uncastled king: queen to f7 (g8)
Winning blow: rook to e1 (d1)
Winning blow: king to c1
Attack on the uncastled king: pawn to h4 (g3·4)
Winning blow: pawn to c5 (b4)
Attack on the uncastled king: knight to f7 (e5·12)
Attack on the uncastled king: queen to d4 (e3·2)
Attack on the uncastled king: bishop to d5 (h1·4)
Winning blow: knight to b8 (d7)
Attack on the uncastled king: bishop to h8 (a1·8)
Attack on the uncastled king: queen to e5 (e4)
Attack on the uncastled king: queen to e5 (h2)
Attack on the uncastled king: queen to f7 (f1)
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