Chess960 puzzles: Relative pin
A piece shields a more valuable one behind it — moving it loses material.
511 puzzles
Mate in 2: queen to d7 (d2·3)
Mate in 2: queen to d6 (h6·2)
Mate in 2: knight to b5 (c7)
Mate in 2: queen to e6 (e3·2)
Mate in 2: rook to h7 (h8)
Mate in 2: queen to g8 (d8)
Attack on the uncastled king: bishop to h2 (g1·2)
Mate in 2: queen to e3 (a3)
Deflection: queen to d6
Attack on the uncastled king: queen to f5 (c8)
Winning blow: knight to b4 (d3·3)
Winning blow: queen to h7 (g7)
Winning blow: king to b1 (a2·10)
Attack on the uncastled king: king to f1 (g1·11)
Winning blow: king to b1 (c1·36)
Winning blow: pawn to d4 (d2·4)
Attack on the uncastled king: rook to g3 (h3·4)
Winning blow: queen to b7 (b8·6)
Attack on the uncastled king: queen to e3 (d4·2)
Winning blow: bishop to c5 (f2·4)
Attack on the uncastled king: rook to d4 (d1·14)
Attack on the uncastled king: king to b2 (b1·6)
Winning blow: queen to g7 (h7·4)
Mate in 2: queen to h5 (d1·2)
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