1. Ra7! 1. e7 f1=Q 2. e8=Q Qf6+ 3. Kh7 Qh4+ 4. Kg6 Rg1+ 5. Kf5 Qf2+ 1... Rd8+ 1... f1=Q 2. Rh7+ Kg2 3. Rg7+= 2. Bf8!! Rxf8+ 2... f1=Q 3. Rh7+ Kg2 4. Rg7+= 3. Kg7 f1=Q 4. Rf7!! Qe2 4... Qc4 5. Kxf8! 5. Kxf8! Qxe6 6. Rh7+ Kg2 7. Rg7+ 1/2-1/2