Chess960 puzzles: Royal fork
A fork with check: the king must move, and the second piece is lost.
3622 puzzles
Winning blow: knight to c8 (d6·4)
Attack on the uncastled king: knight to f7 (e5·19)
Winning blow: knight to c6 (b4)
Winning blow: bishop to g5 (e3·2)
Attack on the uncastled king: knight to d6 (f5·13)
Attack on the uncastled king: knight to c6 (d4·4)
Winning blow: queen to e4 (f5)
Attack on the uncastled king: knight to d6 (f5·14)
Attack on the uncastled king: queen to g5 (e3·4)
Attack on the uncastled king: bishop to b4 (d2·7)
Winning blow: knight to g6 (f4·3)
Attack on the uncastled king: knight to f7 (g5·26)
Winning blow: knight to e7 (g6·2)
Winning blow: queen to d8 (d1)
Attack on the uncastled king: knight to c6 (b4·4)
Winning blow: queen to h7 (h8)
Winning blow: knight to d5 (b6)
Winning blow: queen to g3
Attack on the uncastled king: queen to f5 (f3·3)
Attack on the uncastled king: queen to d5 (f5·3)
Winning blow: queen to c6 (e8)
Winning blow: pawn to b8
Winning blow: queen to g4 (d1)
Winning blow: knight to f7 (g5)
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Tactics
BatteryCheck chaseClearanceDecoyDeflectionDiscovered attackDiscovered checkDouble checkWinning exchangeBishop forkKnight forkPawn forkQueen forkRook forkHanging pieceInterferenceOverloadAbsolute pinRelative pinWin the pinned piecePromotionQueen trapQuiet moveRemove the defenderSacrifice attackSkewerTrapped pieceUnderpromotionWinning blowX-rayZwischenzug