Mate in 3 · No. 506 · HarderQueen and two rooks
White to play and mate in three.
- 1. Rd8 Kb8 2. Qd7 Ka8 3. Rxc8#
Other defences
- 1. Rd8 Kb8 2. Qd7 b5 3. Rxc8#
- 1. Rd8 Kb8 2. Qd7 c4 3. Rxc8#
- 1. Rd8 Kb7 2. Qd7+ Kb8 3. Rxc8#
- 1. Rd8 Kb7 2. Qd7+ Ka8 3. Rxc8#
- 1. Rd8 Kb7 2. Qd7+ Ka6 3. Ra4#
- 1. Rd8 Ka7 2. Qd7+ Kb8 3. Rxc8#
- 1. Rd8 Ka7 2. Qd7+ Ka8 3. Rxc8#
- 1. Rd8 Ka7 2. Qd7+ Ka6 3. Ra4#
- 1. Rd8 b5 2. Qd7 Kb8 3. Rxc8#
- 1. Rd8 b5 2. Qd7 c4 3. Rxc8#
- 1. Rd8 b5 2. Qd7 b4 3. Rxc8#
- 1. Rd8 c4 2. Qd7 Kb8 3. Rxc8#
- 1. Rd8 c4 2. Qd7 b5 3. Rxc8#
- 1. Rd8 c4 2. Qd7 c3 3. Rxc8#
Position
- White
- king on g5, queen on d1, rooks on d4 and g4
- Black
- king on a8, knight on c8, pawns on b6 and c5