1. Bf6 d4 closes the diagonal. 2. Ne2! 2. Nf3? leads to a draw. 2... a1=Q 3. Bxd4+ Qxd4 4. Nxd4 Kxd4 5. Kf4 Kxd3 6. Kg5 Ke4 7. Kh6 Kf5 8. Kxh7 Kf6 9. h6 Kf7= 2... a1=Q 2... Kxe2? 3. Bxd4 3. Nc1! Qxc1 3... Qa6?? 4. Bg5# 3... Qa5? 4. Bxd4+ Kxd4 (4... Kd2? 5. Nb3+) 5. Nb3+ Kxd3 6. Nxa5 white wins. 4. Bg5+ Kxd3 5. Bxc1 Kc2 6. Bf4 and white wins. 1-0 [Kjell Persson]