[Event "The Hague"] [Site "?"] [Round "0"] [White "Nilsson"] [Black "Euwe"] [Result "0-1"] [ECO "B24"] [Opening "Sicilian: Closed, 3.g3 g6"] {Black storms with his Queenside pawns in order to control the long dark-squared diagonal with his Bishop} 1. e4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nge2 d6 6. O-O (6. d3 -- 7. Be3 {the threat of Pd4}) 6... Rb8 7. d3 { White's treatment of the opening has not been particularly exact. There was no hurry to get castled; it would have been wiser to play Pd3 and Be3 with the threat of Pd4 to keep Black busy. By neglecting this he allows Black's operations todevelopsmoothly} 7... b5 8. Nd5 e6 9. Ne3 Nge7 10. c3 { Just about compulsorty} (10. Rb1 b4 11. Bd2 a5 {Black continues strongly}) 10... b4 11. Bd2 O-O 12. Qc1 bxc3 13. bxc3 (13. Bxc3 Nd4 14. Bxd4 cxd4 15. Nc2 Qb6 {Black has a promising game, but at least White would have had the advantage of keeping the dangerous diagonal closed}) 13... Ba6 14. Qc2 Qa5 15. Rab1 Ne5 $1 16. c4 { Now Black's aim is achieved; the diagonal is definitely open} 16... Qa3 17. Bc3 N7c6 18. f4 Nd4 $1 { Forcing the following liquidation which is in Black's favour} 19. Bxd4 cxd4 20. fxe5 dxe3 21. exd6 Qxd6 22. Rxb8 Rxb8 23. Rb1 Rb4 $1 24. Rb3 (24. Rxb4 Qxb4 { Black's Queen has a chance to get to d2 or e1}) 24... Qb6 25. Bf3 Qa5 26. Nc1 ( 26. -- Rxb3 27. Qxb3 Qe1+ 28. Kg2 Qf2+) 26... Bd4 27. Kf1 e5 28. Rxb4 Qxb4 29. Nb3 Bc8 30. Ke2 a5 $1 {The decisive advance, compelling White to abandon his positions so that the storm troops can infiltrate} 31. Nxd4 exd4 32. c5 a4 33. c6 a3 34. c7 Qb2 35. Kd1 Qa1+ 36. Ke2 Qg1 37. -- Qf2+ 38. Kd1 Qf1# 0-1