1. c6! dxc6 2. a6 Bf3 2... c5? 3. Ne5 Prevents the Bishop from getting on the long diagonal. 3. Ng5 Bd5 4. Ne6! c5 4... Kd7? 5. Nc5+ Kc7 6. a7 and white wins. 5. Nc7+ Kd7 6. Nxd5 Kc8 6... Kc6? 7. Kg2 c4 8. Kf2 c3 9. Ke3 c2 10. Kd2 and white wins. 7. Nb6+ Kb8 7... Kc7 8. a7 Kb7 9. a8=Q+ and white wins. 8. Nd7+ Ka7 9. Nxc5 and white wins. 9... Kb6 10. Kg3 Ka7 11. Kf4 Kb6 12. Ke5 Ka7 13. Kd6 Kb6 14. Kd5 Ka7 15. Kc6 Ka8 16. Kb6 Kb8 17. Ne6 17. a7+?? Ka8= 17... Ka8 18. Nc7+ Kb8 19. a7+ Kc8 20. a8=Q+ Kd7 21. Qe8+ Kd6 22. Qe6# 1-0 [Kjell Persson]