Chess960 puzzles: Royal fork
A fork with check: the king must move, and the second piece is lost.
3622 puzzles
Attack on the uncastled king: knight to c6 (b4·10)
Winning blow: queen to h8 (f6·2)
Winning blow: knight to g6 (e5·8)
Winning blow: rook to h8 (c8·3)
Winning blow: queen to d7 (d2·7)
Winning blow: knight to c6 (d4·14)
Winning blow: bishop to b7 (h1·6)
Winning blow: queen to f7 (g6·3)
Winning blow: queen to c7 (c2·3)
Winning blow: rook to h8 (h2·2)
Winning blow: queen to e6 (a2·4)
Winning blow: queen to d7 (c7)
Winning blow: bishop to g7 (e5)
Attack on the uncastled king: knight to f6 (d5·13)
Winning blow: bishop to h6 (e3·5)
Winning blow: rook to g8 (g5·3)
Winning blow: rook to c4 (b4)
Winning blow: rook to b7 (f7·2)
Winning blow: queen to e6 (e3·8)
Winning blow: knight to c5 (a6·3)
Winning blow: queen to d6 (f8·5)
Winning blow: bishop to b7 (e4)
Attack on the uncastled king: queen to g8 (h7·19)
Winning blow: queen to e7 (e6·7)
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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