1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. d3 d6 6. Be3 Rb8 7. Qd2 e5 8. Nge2 Be6 9. O-O Qd7 10. f4 Nd4 11. Nd1 Nf6 12. c3 Nxe2+ 13. Qxe2 Ng4 14. f5!? white offers a pawn sac in return for some play 14... gxf5 15. exf5 Bxf5 16. Bd2 O-O 16... Be6 17. c4 b5 18. h3 Nf6 19. Bg5 Ng8 20. Kh2 and black has again been forced to undevelop 17. h3 Nf6 18. Bg5 threatening g4 or Ne3 18... Ne8 19. g4 Be6 20. Ne3 d5 20... f6 21. Bh4 21. c4 d4 22. Nd5 Bxd5? giving up this bishop is bad as black will now be permanently weak on the white squares 23. Bxd5 Nc7 24. Be4 Ne6 25. Bd2 h6 trying to stop g5 followed by Qh5 26. g5! Nxg5 27. Bxg5 hxg5 28. Qh5 Rfe8 28... f5 29. Bd5+ Rf7 30. Qxf7+ (30. Qxg5 f4) 30... Qxf7 31. Rxf5 (31. Bxf7+ Kxf7 32. Rxf5+ Kg6 33. Raf1) 31... Qxd5 32. cxd5+/- 29. Bd5?! 29. Qh7+! Kf8 30. Rf5 Re6 31. Rxg5 f6 32. Bd5! Rbe8 (32... fxg5 33. Rf1+ Ke7 34. Bxe6 Kxe6 35. Qg6+ Ke7 36. Qxg7+ Kd6 37. Rf6+ Kc7 38. Rf7 wins the queen) 33. Rf1 29... Re7 30. Rf3 e4 31. dxe4 Rf8 32. Raf1 Qc7 33. Qxg5 Re5 34. Rf5?! Should have chosen the simple 34. Qg2 and black is powerless to prevent doubling on the g-file 34... Rxd5 35. cxd5 Qd6 36. Rg3 Qh6 37. Rf5 f6 38. Rg6 Qe3+ 39. Kh2 Rf7 40. Rfxf6 34... Rxf5 35. Rxf5 b6? black's best defence is: 35... Qb6 36. Qh5 Qh6 37. Bxf7+ Kh7 38. Rxc5 keeping the rook active and winning a pawn 36. Qg6! threatening Rg5 or Rh5 36... Qd7 36... Qe7 37. Rg5 Qxg5+ 38. Qxg5+- 37. Rg5 with no defence to the mate 1-0