- 1. Rxa6+ Kxa6 2. Rxa8+ Kb6 3. a5#
Other defences
- 1. Rxa6+ bxa6 2. cxb4+ Kxa4 3. Qb3#
- 1. Rxa6+ bxa6 2. cxb4+ Qxb4 3. Qxb4#
Position
- White
- king on e8, queen on c4, rooks on b6 and b8, bishop on e1, pawns on a2, a4, c3, f2 and h3
- Black
- king on a5, queen on d6, rook on b4, bishops on a8 and c7, knights on a6 and b2, pawns on b5, b7, c6, d4, d5 and d7