[Event "Portoroz"] [Site "?"] [Round "0"] [White "Cardoso"] [Black "Benko"] [Result "0-1"] [ECO "B33"] [Opening "Sicilian: Open, 2...Nc6"] 1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 d6 6. Bc4 Qb6 7. Nb3 e6 8. O-O Be7 9. Be3 Qc7 10. f4 O-O 11. g4 $2 {This sharp advance repeatedly occurs in similar positions in the Sicilian. In this case, however, it is premature. The attack has point when it leads to the opening of a file by Pg5 (eg. Black has played ... Ph6 and White has castled on the other side) or when it succeeds in driving back the enemy pieces. Even in such cases it needs very careful preparation, for the advance Pg4-g5 is bound to create weaknesses in one's own camp. A sudden counterattack may prove devastating, and in practise this is quite frequently what happens} 11... d5 $1 { Hitting the nail on the head} 12. Bd3 (12. exd5 Nb4 13. Be2 Nbxd5 { the Black counterattack is in full swing}) 12... dxe4 13. Nxe4 Nd5 14. Bd2 a5 { Black has completely take over the initiative; and it is now clear that White was only beating air withPg4} 15. c3 Rd8 16. g5 a4 17. Nc1 Qb6+ 18. Kh1 Ne3 ( 18... Qxb2 {Black prefers to concentrate logically on the weaknesses which White 's unjustified attack has created}) 19. Bxe3 Qxe3 20. Qf3 Qxf3+ 21. Rxf3 b6 $1 22. Bc2 Bb7 23. Ne2 Na5 24. N2g3 (24. b3 axb3 25. axb3 Nxb3 $1 26. Rxa8 Bxa8 27. Bxb3 Bxe4 $19) 24... Nc4 25. Rd1 (25. b3 axb3 26. axb3 Nd2) 25... Rxd1+ 26. Bxd1 Nxb2 27. Be2 Bd5 28. f5 exf5 29. Rxf5 Bxa2 30. Rb5 a3 31. Nf5 Bc4 $1 {So strong is the passed a-pawn now that Black can cooly permit Nxe7+} 32. Bxc4 Nxc4 33. Rb1 a2 34. Ra1 Bc5 35. Nd4 Ne3 36. Nb3 Nc2 37. Ned2 Nxa1 38. Nxa1 Rd8 39. Ndb3 h5 40. g6 0-1