Chess960 puzzles: Back-rank mate
The king is locked behind its own pawns — a heavy piece strikes the last rank.
479 puzzles
Mate in 2: queen to c4 (f1)
Attack on the uncastled king: queen to a8 (a7·2)
Mate in 3: knight to f7 (d6·3)
Mate in 3: queen to h6 (g6·2)
Attack on the uncastled king: queen to f8 (f1·7)
Mate in 3: rook to e8 (e1·4)
Mate in 2: queen to c7 (d8)
Mate in 3: bishop to b6 (d4)
Attack on the uncastled king: bishop to c6 (e4·13)
Attack on the uncastled king: rook to c8 (c4·2)
Mate in 3: queen to d6 (d5·2)
Back-rank mate in 3 on d1 (d8)
Mate in 2: rook to f8 (c8·2)
Mate in 2: queen to a7 (a5·7)
Attack on the uncastled king: queen to d8 (g8)
Mate in 2: queen to b7 (b6·4)
Attack on the uncastled king: queen to c7 (c2·3)
Back-rank mate in 3 on f2 (d2·2)
Mate in 1: pin on h8
Attack on the uncastled king: bishop to a6 (b5·2)
Mate in 3: pawn to c3 (b2)
Mate in 3: bishop to d6 (g3)
Attack on the uncastled king: rook to e3 (g3·4)
Mate in 3: queen to d6 (c5)