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 d7 (d3·2)
Mate in 2: queen to d8 (d6·2)
Mate in 2: queen to g8 (g3)
Attack on the uncastled king: queen to a7 (f2)
Mate in 2: queen to b8 (b3)
Mate in 2: queen to h7 (h1·2)
Mate in 2: queen to d8 (d7·3)
Mate in 2: queen to d7 (d1·3)
Mate in 2: queen to c8 (c3·2)
Attack on the uncastled king: queen to f6 (d4·3)
Attack on the uncastled king: queen to f8 (f2·4)
Mate in 2: queen to h8 (h7·4)
Mate in 2: queen to g8 (g7·4)
Mate in 2: queen to d7 (d1·5)
Mate in 2: queen to e8 (e7·3)
Mate in 2: queen to f8 (f6·3)
Attack on the uncastled king: rook to c8 (c1·20)
Attack on the uncastled king: queen to a7 (a3·2)
Mate in 2: queen to f8 (f7·2)
Mate in 2: queen to c7 (c1)
Mate in 2: queen to h8 (h5·3)
Attack on the uncastled king: queen to d8 (d4·4)
Attack on the uncastled king: queen to g7 (g5·2)
Attack on the uncastled king: queen to e8 (h8)