Chess960 puzzles: Relative pin
A piece shields a more valuable one behind it — moving it loses material.
511 puzzles
Mate in 2: knight to c6 (a5)
Mate in 2: queen to f5 (h7)
Mate in 2: rook to d8 (d7)
Attack on the uncastled king: knight to e6 (f4·9)
Mate in 2: queen to d5 (g2)
Mate in 2: pawn to g3
Mate in 2: queen to a6 (f1·3)
Mate in 2: queen to d7 (b7)
Mate in 2: bishop to b5 (e2)
Mate in 2: knight to e7 (d5·5)
Mate in 2: queen to d6 (a3)
Mate in 2: pawn to f6 (e5·2)
Mate in 2: queen to c8 (f5·2)
Attack on the uncastled king: queen to b5 (a4·5)
Winning blow: pawn to g4 (g3·6)
Winning blow: bishop to d6 (e5·6)
Winning blow: queen to d5 (e5·4)
Attack on the uncastled king: knight to b4 (c2·6)
Attack on the uncastled king: bishop to d4 (g1·11)
Winning blow: queen to a4 (b5·2)
Winning blow: rook to e2 (f2)
Attack on the uncastled king: pawn to e7 (e6·4)
Attack on the uncastled king: rook to c3 (h3·2)
Attack on the uncastled king: queen to g6 (h7·3)
Tactics
BatteryCheck chaseClearanceDecoyDeflectionDiscovered attackDiscovered checkDouble checkWinning exchangeBishop forkKnight forkPawn forkQueen forkRook forkRoyal forkHanging pieceInterferenceOverloadAbsolute pinWin the pinned piecePromotionQueen trapQuiet moveRemove the defenderSacrifice attackSkewerTrapped pieceUnderpromotionWinning blowX-rayZwischenzug