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 d5 (e3·19)
Winning blow: queen to e6 (e3·9)
Attack on the uncastled king: pawn to b4 (b2·3)
Winning blow: bishop to c6 (d7·2)
Attack on the uncastled king: king to h1 (g1·9)
Winning blow: king to g1 (h1·8)
Winning blow: rook to h3 (e3)
Winning blow: pawn to f4 (f3·5)
Winning blow: queen to c8 (c4)
Winning blow: bishop to a5 (b6)
Winning blow: king to h2 (g1·39)
Winning blow: bishop to f5 (e4·6)
Winning blow: pawn to d4 (d2·4)
Winning blow: bishop to h6 (e3·7)
Winning blow: pawn to f4 (f3·6)
Winning blow: pawn to e4 (e2·6)
Winning blow: king to b2 (b3)
Winning blow: queen to a3 (a6·2)
Winning blow: pawn to c6 (c5·8)
Attack on the uncastled king: king to d2 (d1·11)
Winning blow: king to a2 (b1·39)
Winning blow: king to g3 (h2·3)
Winning blow: pawn to e6 (e5·9)
Mate in 2: knight to g3 (f5)
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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