- 1. Qxa7+ Qa6 2. Qxa6+ Kb4 3. Qa3#
Other defences
- 1. Qxa7+ Kb4 2. Qa3#
- 1. Qxa7+ Qa5 2. Qxa5#
Position
- White
- king on g7, queen on b6, rook on c5, bishop on f4, pawns on b2 and g3
- Black
- king on a4, queen on b5, rook on a1, bishop on a7, knight on a2, pawns on b3, c6 and d3