[Event "Buenos Aires"] [Site "Buenos Aires ol-fin (14)"] [Round "0"] [White "Alekhine"] [Black "Castillo"] [Result "1-0"] [ECO "A44"] [Opening "Old Benoni: Czech, 3.e4 d6 4.Nc3"] 1. d4 c5 2. d5 e5 3. e4 d6 4. Nc3 Ne7 5. g3 Ng6 6. h4 Be7 7. h5 Nf8 8. Bb5+ Nbd7 9. a4 a6 10. Be2 h6 11. Be3 Bg5 12. Qd2 Nh7 13. Nf3 Bxe3 14. Qxe3 O-O 15. Nd2 b6 16. Nc4 Qc7 17. f4 Re8 18. O-O Rb8 19. b3 f6 {White has more space, and thereby the better chances. It is difficult for him to strengthen his position any further, since it is hard to find a way to conviniently open a file. Moreover, White must be somewhat cautious as his own King position is a bit drafty for him to undertake anything reckless. In these circumstances there is only one possibility left: he must maneuver. Black for his part, has just as little chance of opening a file without disadvantage} (19... b5 20. axb5 axb5 21. Na5 {Black must maneuver, but his pieces have less room in which to do it}) 20. Qf2 Kh8 21. Kh2 Ndf8 22. Ne3 (22. -- b5 23. axb5 axb5 24. Na5 Bd7) 22... Ra8 23. Rh1 Bd7 24. Qf1 Qb7 25. Kg2 Re7 {Until now Black's moves have appeared to follow a regular patern, with the aim of enforcing ... Pb5. This last move, however, does not fit into the pattern. Apparently Black has decided that ... Pb5 is not practicable} 26. Bd3 Bc8 27. Qf3 Qc7 28. Rhf1 Qd8 29. Nc4 Qc7 30. Kh2 Qd8 31. Be2 Raa7 32. Rab1 Qc7 33. Rf2 Rb7 34. Ra1 Bd7 35. Ne3 Ra7 36. Raf1 Qb8 37. Ra1 Bc8 38. Qg2 Re8 39. Qf1 Qc7 40. Nc4 Qd8 41. Qd1 Rae7 42. Bg4 $1 { All this looked like aimless woodshifting, but now suddenly White has achieved something} 42... exf4 $2 {A familiar occurence after prolonged maneuvering: the opponent is losing his patience, and feels obliged to take some definite action} (42... -- 43. Bxc8 Qxc8 44. Nxd6) 43. gxf4 f5 { With an eye on the open position of the White King} 44. Bh3 $1 { This suprising riposte poses insoluble problems for Black} (44. exf5 Re3) (44. Bxf5 Bxf5 45. exf5 Re3 $40) 44... b5 (44... fxe4 45. Bxc8 Qxc8 46. Nxd6) (44... -- 45. e5) 45. axb5 axb5 46. Nxb5 Rxe4 47. Nbxd6 Qh4 48. Qf3 Nf6 49. Nxe8 Ng4+ 50. Kg2 Rxe8 51. Bxg4 fxg4 52. Qg3 Qxh5 53. f5 $1 Bb7 (53... Bxf5 54. Nd6 $18) 54. Rd1 Ng6 {A last desperate attempt to save the day} 55. fxg6 Bxd5+ 56. Rxd5 Qxd5+ 57. Kg1 Re1+ 58. Rf1 Rxf1+ 59. Kxf1 Qf5+ 60. Qf2 Qxg6 61. Qf8+ Kh7 62. Ne3 Qa6+ 63. Kf2 Qa7 64. Qf5+ g6 65. Qxg4 h5 66. Qf4 Qd7 67. Qe5 1-0