1. b7 O-O+ 2. b8=R! 2. b8=Q? Kh7 3. Qxf8 2... Rxb8+ 3. Kxb8 Kg7 4. Kc7 Kh6 5. Kd6 Kxh5 6. Ke7 Kg5 7. Ke6 1-0