Mate in 3 · No. 12 · HarderQueen and two knights
White to play and mate in three.
- 1. Qxc7 Re7 2. Qxe7 Kb8 3. Qxb7#
Other defences
- 1. Qxc7 Ka7 2. Qxb7#
- 1. Qxc7 Re8 2. Qxb7#
- 1. Qxc7 Re7 2. Qxe7 Ka7 3. Qxb7#
- 1. Qxc7 Re7 2. Qxe7 bxa4 3. Qxb7#
- 1. Qxc7 Re7 2. Qxe7 b6 3. Qb7#
- 1. Qxc7 Rh6 2. Qxb7#
- 1. Qxc7 Rg6 2. Qxb7#
- 1. Qxc7 Rf6 2. Qxb7#
- 1. Qxc7 Rd6 2. Qxb7#
- 1. Qxc7 Rc6 2. Qxb7#
- 1. Qxc7 Rb6 2. Qxb6 Kb8 3. Qxb7#
- 1. Qxc7 Rb6 2. Qxb6 bxa4 3. Qxb7#
- 1. Qxc7 Ra6 2. Qxb7#
- 1. Qxc7 Re5 2. Qxb7#
- 1. Qxc7 Re4 2. Qxb7#
- 1. Qxc7 Re3 2. Qxb7#
- 1. Qxc7 Re2 2. Qxb7#
- 1. Qxc7 Re1 2. Qxb7#
- 1. Qxc7 bxa4 2. Qxb7#
- 1. Qxc7 b6 2. Qb7#
Position
- White
- king on b4, queen on d6, knights on a5 and d4, pawns on a4, d3 and f2
- Black
- king on a8, rook on e6, pawns on b5, b7, c7 and d5