[Site "?"] [Round "0"] [White "Bouwmeester"] [Black "Euwe"] [Result "0-1"] [ECO "D51"] [Opening "QGD: 4.Bg5 Nbd7 5.e3 c6"] {Black makes good use of the half-open e-file} 1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 c6 6. cxd5 exd5 7. Bd3 Be7 8. Qc2 Nh5 {Another method of using the half open e-file consists of the maneuver ... Ne4. The text is more direct, as Black rapidly arrives at ... Pf5, starting a minority attack on his own accoutn} 9. Bxe7 Qxe7 10. Nge2 (10. Nf3 Nf4 {unpleasant}) 10... g6 11. O-O f5 12. Rab1 O-O 13. b4 a6 {Although this move doesn't ultimately prevent Pb5, it does provide an open a-file which may be important} 14. a4 f4 $1 { Black gets his blow in first} 15. Nxf4 Nxf4 16. exf4 Rxf4 {Now the f-file is half open, with the f-pawn as a target, while the White d-pawn has beenisolated} 17. Ne2 Rf6 18. b5 axb5 19. axb5 Nf8 20. bxc6 bxc6 21. Rb6 Bd7 { The Queenside action has taken its normal course and achieved its normal advantages. Against the weakness of Black's c-pawn must be set the weakness of White's d-pawn. The game is evenlypoised} 22. Rfb1 Rf7 23. Qd2 Qh4 24. f3 { A slight loosening} (24. Qe3) 24... Ne6 25. Qe3 Re7 26. Rb8+ Rxb8 27. Rxb8+ Kf7 28. Qf2 Qh6 29. f4 Ng7 {preventing Pf5} 30. Bc2 {Losing a vital tempo} (30. Rb7 Bf5 31. Rxe7+ Kxe7 32. Qe3+ $11) 30... Bf5 31. Bxf5 Nxf5 32. h3 Nd6 {In this so rt of situation a Knight on d6 watching both e4 and c4 is a trump for Black} 33. Qf3 Qh4 34. Rb1 Nb5 {In this special case the Knight is even stronger at b5 than at d6, chiefly because of the weak Whited-pawn} 35. Rd1 Qf6 (35... Rxe2 36. Qxe2 Nc3 37. Qe1 $19) 36. Rd2 Re4 37. Qf2 h5 38. Rd3 Kg7 39. Rd2 { White can only mark time} 39... Nd6 40. Rd3 h4 41. Rc3 Nf5 42. Kh2 Qe6 (42... Qe7) (42... Nxd4 43. Nxd4 Rxd4 44. Rxc6 Qxf4+ {White has good drawing prospects }) 43. Rc2 Re3 44. Ng1 {Quite correctly, White offers the pawn against, for if he continues doing nothing Black can easilty continue to strengthen his position} 44... Nxd4 45. Ra2 g5 (45... Qe7 46. Ra7 Qxa7 47. Qxe3 Nb5 48. Qe5+ { White has good chances}) 46. Ra7+ Kg6 47. Qb2 Qf6 48. Qb7 Qxf4+ 49. Kh1 Qf8 50. Qh7+ Kf6 51. Ra1 Re4 52. Rf1+ Rf4 53. Rxf4+ gxf4 54. Qxh4+ Ke5 55. Qe1+ Kf5 56. Qd1 Qf6 57. Qh5+ Ke6 58. Qe8+ Kd6 59. Qb8+ Kd7 60. Qb7+ Kd6 61. Qb8+ Kd7 62. Qb7+ Ke8 63. Qc8+ Kf7 64. Qd7+ Kg6 65. Qg4+ Kh6 66. Qd1 c5 67. Qc1 c4 68. Qb1 Qe5 69. Qb6+ Kh5 70. Qc5 f3 $1 71. gxf3 Nf5 72. Qc8 Kh4 73. Qg8 Ng3+ 0-1