Chess960 puzzles: Only move
Everything else loses — find the only move that holds.
6689 puzzles
Winning blow: queen to g3 (e3)
Attack on the uncastled king: queen to a3 (c1·6)
Winning blow: queen to g3 (f4)
Winning blow: rook to e8 (e1·5)
Attack on the uncastled king: rook to f8 (f1·15)
Attack on the uncastled king: rook to f8 (e8)
Winning blow: queen to b6 (g1)
Winning blow: pawn to e5 (f4·14)
Winning blow: rook to b8 (b2)
Winning blow: queen to e3 (c1)
Winning blow: pawn to e5 (f4·15)
Winning blow: rook to e3 (e1·7)
Attack on the uncastled king: king to c2 (b1·10)
Winning blow: queen to g5 (h5)
Winning blow: queen to f4 (f1·2)
Attack on the uncastled king: pawn to e5 (f4·92)
Attack on the uncastled king: rook to g8 (g3·3)
Winning blow: rook to f5 (f6·2)
Attack on the uncastled king: queen to e6 (h3)
Attack on the uncastled king: bishop to d5 (h1·26)
Winning blow: pawn to e5 (d4·18)
Winning blow: rook to e3 (e1·8)
Winning blow: knight to b6 (c4·4)
Attack on the uncastled king: queen to c5 (c3·3)
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