Chess960 puzzles: Only move
Everything else loses — find the only move that holds.
6689 puzzles
Attack on the uncastled king: bishop to d5 (e4·6)
Winning blow: queen to b2 (e5)
Winning blow: rook to d1 (d3·3)
Winning blow: bishop to b3 (c2)
Winning blow: queen to c2 (d2·4)
Winning blow: rook to f1 (f2·5)
Winning blow: queen to f2 (f6)
Castling-960 to the rescue on g1 (f1·7)
Winning blow: queen to e1 (g3·2)
Attack on the uncastled king: knight to f4 (d3·14)
Winning blow: knight to f5 (g3·14)
Castling-960 to the rescue on h1 (g1·4)
Castling-960 to the rescue on d1 (c1·3)
Winning blow: queen to e1 (c3·3)
Winning blow: rook to e1 (e4·3)
Attack on the uncastled king: queen to d2 (d5)
Winning blow: queen to e3 (h6)
Winning blow: queen to b7 (e4·3)
Winning blow: queen to f2 (f5)
Attack on the uncastled king: queen to d2 (a5)
Winning blow: queen to d1 (c2·3)
Winning blow: knight to c3 (b1·3)
Winning blow: queen to f1 (f2·2)
Winning blow: queen to d1 (e2·2)
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