1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O b5 6. Bb3 Be7 7. c3 black's slightly inaccurate move order could be met by 7.d4 when 7...d6 (7...exd4 8. e5 or 7...Nxd4 8. Nxd4 exd4 9. e5 or 7...Nxe4 8. dxe5 threatening Qe5) 8. a4 b4 9. c3 is good for white 7... O-O 8. Re1 d6 9. d4 Bg4 10. d5 Na5 11. Bc2 c5 better is 11...c6 challenging the white centre. Now black finds queenside counterplay very difficult to come by 12. Nbd2 Nb7 13. h3 Bh5 14. Nf1 h6 15. g4 Bg6 16. Ng3 Nh7 17. Kh2 Ng5 18. Nh4 heading for f5 18... Bxe4 19. Nxe4 Nxe4 20. Nf5 Nf6 20...Ng5 21. h4 Nh7 is better 21. g5 Nh7 22. Qh5 Bxg5 23. Rg1 Kh8 black is in a bad way e.g. 23...Qf6 loses to 24. h4 Bxc1 25. Rxg7+ Kh8 26. Rxh7+ amongst others 24. Bxg5 hxg5 or 24... Nxg5 25. Nxh6 Nf3+ 26. Qxf3 gxh6 Qf5 mating 25. Nxg7 Kxg7 26. Bxh7 f6 27. Rg3 Qe8 28. Rxg5+ fxg5 29. Qxg5+ Kh8 if 29...Kxh7 white has 30. Rg1 Rxf2+ Kh1 when mate is unstoppable 30. Bf5 1-0