Chess960 puzzles: Royal fork
A fork with check: the king must move, and the second piece is lost.
3622 puzzles
Winning blow: queen to e7 (d8)
Winning blow: knight to b6 (c4)
Winning blow: knight to f6 (d5·2)
Attack on the uncastled king: rook to c4 (c1·8)
Attack on the uncastled king: knight to c6 (a5·3)
Attack on the uncastled king: knight to e7 (f5·9)
Winning blow: queen to f5 (e4)
Winning blow: queen to b7 (b8)
Winning blow: knight to c7 (d5·3)
Attack on the uncastled king: knight to d7 (e5·11)
Winning blow: knight to d6 (e8)
Attack on the uncastled king: knight to c7 (b5·15)
Winning blow: knight to f6 (d7)
Attack on the uncastled king: queen to c6 (g2·3)
Attack on the uncastled king: queen to f6 (e5)
Winning blow: queen to e6 (e5)
Winning blow: knight to g6 (f4·2)
Attack on the uncastled king: knight to e6 (g5·8)
Winning blow: bishop to c8 (g4)
Attack on the uncastled king: bishop to e6 (g4)
Attack on the uncastled king: bishop to b3 (c2·3)
Attack on the uncastled king: knight to f7 (g5·25)
Winning blow: knight to e5 (c4)
Attack on the uncastled king: queen to h6 (d2)
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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