Chess960 puzzles: Relative pin
A piece shields a more valuable one behind it — moving it loses material.
In a relative pin the piece shields not its king but something valuable behind it, usually the queen. Moving is legal but costly, because the piece behind falls. Look for three units on one line: your long-range piece, a cheaper enemy piece, and an expensive one hiding behind. Beware the classic trap — a relatively pinned piece can still move with check or a bigger threat, so verify before you cash in.
511 puzzles
Mate in 1: queen to h7 (h4)
Mate in 1: queen to g7
Mate in 1: queen to b7
Attack on the uncastled king: queen to d8
Attack on the uncastled king: queen to e8 (e1)
Attack on the uncastled king: queen to e8 (e2)
Mate in 1: queen to a6
Mate in 1: queen to a8
Mate in 1: queen to h2 (e5)
Mate in 1: rook to e8 (e1·3)
Mate in 1: queen to h5
Mate in 1: rook to f8
Mate in 1: rook to d8
Mate in 2: queen to h2 (c7)
Mate in 2: queen to h2 (e5)
Mate in 1: rook to b1 (b2)
Mate in 1: rook to e8 (e1·5)
Mate in 1: queen to h7 (h4·5)
Mate in 1: queen to h1
Mate in 1: queen to h7 (g6)
Mate in 2: bishop to h2
Mate in 1: queen to a1 (f6)
Mate in 2: rook to h6 (e6)
Mate in 2: rook to e8 (e1)
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