Chess960 puzzles: Only move
Everything else loses — find the only move that holds.
6689 puzzles
Winning blow: rook to d4 (d7)
Attack on the uncastled king: rook to e5 (c5)
Winning blow: knight to f6 (h5·14)
Winning blow: knight to d7 (b6·4)
Winning blow: rook to f8 (f5·4)
Winning blow: bishop to d5 (f3·6)
Attack on the uncastled king: rook to e8 (a8)
Winning blow: queen to b5 (c6·2)
Winning blow: queen to b5 (f5·2)
Winning blow: queen to g7 (g5·2)
Attack on the uncastled king: queen to h8 (c3·10)
Winning blow: queen to e7 (e2·4)
Winning blow: knight to e6 (d4·17)
Winning blow: rook to d8 (d4·7)
Winning blow: queen to g7 (g6·2)
Winning blow: rook to b8 (b1·14)
Attack on the uncastled king: rook to d7 (d6)
Attack on the uncastled king: knight to e6 (d4·24)
Attack on the uncastled king: queen to g7 (a1·10)
Winning blow: queen to b7 (h1·4)
Winning blow: queen to f6 (f2·5)
Winning blow: queen to d8 (f8·3)
Attack on the uncastled king: queen to f8 (d8)
Attack on the uncastled king: bishop to b7 (g2·2)
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