Mate in 3 · No. 431 · HarderQueen, rook and knight
White to play and mate in three.
- 1. Rf7 Kb8 2. Qb5 Kc8 3. Qe8#
Other defences
- 1. Rf7 Kb8 2. Qb5 Ka8 3. Qxb7#
- 1. Rf7 Kb8 2. Qb5 Ka7 3. Qxb7#
- 1. Rf7 Ka8 2. Qe7 Kb8 3. Qxb7#
- 1. Rf7 Ka8 2. Qe7 Ka7 3. Qxb7#
- 1. Rf7 Ka8 2. Qe7 Bc8 3. Qa7#
- 1. Rf7 Ka8 2. Qe7 Bc6 3. Qa7#
- 1. Rf7 Ka8 2. Qe7 Ba6 3. Qa7#
- 1. Rf7 Ka8 2. Qe7 Bd5 3. Qa7#
- 1. Rf7 Ka8 2. Qe7 Be4 3. Qa7#
- 1. Rf7 Ka8 2. Qe7 Bf3 3. Qa7#
- 1. Rf7 Ka8 2. Qe7 Bg2 3. Qa7#
- 1. Rf7 Ka8 2. Qe7 Bh1 3. Qa7#
- 1. Rf7 Kb6 2. Qb5+ Ka7 3. Qxb7#
Position
- White
- king on f4, queen on e2, rook on f8, knight on h4, pawns on a4 and d4
- Black
- king on a7, bishop on b7, pawn on a5