Chess960 puzzles: Only move
Everything else loses — find the only move that holds.
6689 puzzles
Winning blow: knight to e1 (c2·2)
Winning blow: king to h1 (g1·3)
Winning blow: king to e2 (d3)
Winning blow: king to b1 (a2·2)
Attack on the uncastled king: king to d1 (e1·2)
Winning blow: king to d1 (c1·4)
Winning blow: king to b2 (c1·8)
Attack on the uncastled king: king to d1 (e1·3)
Winning blow: pawn to d8 (d7·2)
Winning blow: knight to b2 (c4)
Attack on the uncastled king: king to g1 (f1·4)
Winning blow: knight to b1 (d2)
Winning blow: pawn to b4 (b3·2)
Winning blow: knight to d1 (c3)
Winning blow: king to d2 (c2·3)
Winning blow: king to h3 (g3)
Winning blow: king to f3 (e2·2)
Winning blow: king to b1 (c1·3)
Winning blow: king to e1 (f1·8)
Winning blow: king to e3 (d2·2)
Winning blow: king to c3 (d2·2)
Winning blow: rook to b1 (b2)
Winning blow: king to f2 (e2·2)
Attack on the uncastled king: king to c1 (d1·10)
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