[Event "Wch candidates qf"] [Site "Rotterdam NED"] [Date "1977.2.??"] [Round "4"] [White "Portisch, Lajos"] [Black "Larsen, Bent"] [Result "1-0"] [WhiteElo "?"] [BlackElo "?"] [Variant "Standard"] [TimeControl "-"] [ECO "D37"] [Opening "Queen's Gambit Declined: Barmen Variation"] [Termination "Normal"] [Annotator "lichess.org"] 1. c4 Nf6 2. Nc3 e6 3. Nf3 d5 4. d4 Nbd7 { D37 Queen's Gambit Declined: Barmen Variation } 5. cxd5 exd5 6. Bg5 Be7 7. e3 O-O 8. Bd3 c6 9. Qc2 Re8 10. h3 Nf8 11. Bf4 Ng6 12. Bh2 Bd6 13. Bxd6 Qxd6 14. O-O-O Qe7 15. g4 Be6 16. g5 Ne4 17. Bxe4 dxe4 18. Qxe4 b5 19. h4 b4 20. Na4 Qd6 21. h5 Bd5 22. Qg4 Nf8 23. b3 Qe6 24. Qf4 Nd7 25. Rhe1 Bxb3?! { (0.39 → 1.46) Inaccuracy. Rac8 was best. } (25... Rac8 26. Kb2) 26. axb3 Qxb3 27. Nb2 Qa2?! { (1.26 → 2.07) Inaccuracy. a5 was best. } (27... a5 28. Kb1 a4 29. Rd3 Qd5 30. e4 Qb5 31. g6 fxg6 32. hxg6 hxg6 33. Qd6 Rad8 34. Qxg6) 28. Qf5 c5?! { (1.97 → 3.09) Inaccuracy. Rad8 was best. } (28... Rad8 29. Qb1 Qa3 30. Rd3 Qa6 31. Kd2 c5 32. Rc1 Qe6 33. Qc2 Qh3 34. Qd1 cxd4 35. Rxd4) 29. Qxd7 cxd4 30. Rxd4 Rac8+ 31. Rc4 Rxc4+ 32. Nxc4 Qxc4+ 33. Kd2?! { (2.40 → 1.60) Inaccuracy. Kd1 was best. } (33. Kd1 Rb8 34. Qd4 Qa2 35. h6 Qa4+ 36. Ke2 Qa6+ 37. Qd3 Rb6 38. Rg1 Qxd3+ 39. Kxd3 gxh6) 33... Qa2+ 34. Kd1 Rf8 35. Qd2 Qa5 36. Ke2 Rd8 37. Nd4 Qxg5 38. Qxb4 Qxh5+ 39. Nf3 h6 40. Ra1 Rc8 41. Qb1 a5 42. Ra4 Qc5 43. Nd4 Qh5+ 44. Kd2 Qh4 45. Qf5 Rb8 46. Ra2 h5 47. Qf4 Qd8 48. Ke2 Qb6 49. Qf5?! { (2.03 → 1.29) Inaccuracy. Rxa5 was best. } (49. Rxa5 Qb1 50. Qh4 g6 51. Ra7 Kg7 52. Kf3 Qb6 53. Qe7 Qf6+ 54. Qxf6+ Kxf6 55. Kg3 Kg7) 49... Qa6+ 50. Qd3 Qa8 51. Qc4 Qe4 52. Qc6 Qb1 53. Qc2 Qb6 54. Nf3?! { (1.56 → 0.98) Inaccuracy. f4 was best. } (54. f4 g6 55. Nc6 Re8 56. Ne5 Qb7 57. Kf2 Qd5 58. Qa4 Ra8 59. Nf3 Qf5 60. Rd2 Qe6) 54... Rd8 55. Nd4 Rb8 56. Qd3 g6 57. Rc2?! { (1.33 → 0.72) Inaccuracy. f4 was best. } (57. f4 h4 58. Qe4 Qc5 59. Qc6 Qh5+ 60. Qf3 Qc5 61. Rc2 Qd6 62. Qc6 Qe7 63. Qf3 Re8) 57... Qb1 58. Nf3 Qb7 59. Ne5 Rc8?! { (0.85 → 1.81) Inaccuracy. a4 was best. } (59... a4 60. Nd7 Rc8 61. Rxc8+ Qxc8 62. Kd2 a3 63. Qd4 Kh7 64. Nf6+ Kh6 65. Nd5 Qa6 66. Kc2) 60. Rd2 h4 61. Qd5 Qa6+?! { (0.83 → 1.89) Inaccuracy. Qxd5 was best. } (61... Qxd5 62. Rxd5 Ra8 63. Rd3 a4 64. Ra3 g5 65. Kf3 f5 66. Nd3 Kg7 67. Nb2 Rb8 68. Nxa4) 62. Kf3 Qf6+ 63. Kg2 Qf5 64. Nf3 Qf6? { (1.80 → 3.24) Mistake. Qxd5 was best. } (64... Qxd5 65. Rxd5 Ra8 66. Rd3 Kg7 67. Nxh4 a4 68. Ra3 f5 69. Nf3 Kf6 70. Nd4 Ke5 71. Nb5) 65. Qxa5 h3+ 66. Kg3 Qc6?! { (2.87 → 4.35) Inaccuracy. Kg7 was best. } (66... Kg7 67. Qb4 Rh8 68. Rd6 h2 69. Nxh2 Qe5+ 70. Qf4 Qxf4+ 71. exf4 Ra8 72. Ng4 Ra3+ 73. f3) 67. Rd8+ Rxd8 68. Qxd8+ Kg7 69. Qh4 f6 70. Qxh3 Qd6+ 71. Kg2 Qd5 72. Qg4 Qc6 73. Kg3 Qc1? { (4.00 → 6.81) Mistake. Qc7+ was best. } (73... Qc7+ 74. Qf4) 74. Qd7+ Kh6 75. Kg2 Qa1 76. Qe8 g5?! { (6.54 → 55.09) Inaccuracy. Kh7 was best. } (76... Kh7 77. Nh4 f5 78. Qxg6+ Kh8 79. Qh6+ Kg8 80. Qe6+ Kh8 81. Qc8+ Kh7 82. Qxf5+ Kg8 83. Qe6+) 77. Nd4 Qb1?! { (54.89 → Mate in 22) Checkmate is now unavoidable. f5 was best. } (77... f5 78. Nxf5+ Kh7 79. Qh5+ Kg8 80. Qxg5+ Kf7 81. Qe7+ Kg6 82. e4 Qb2 83. Qd6+ Kf7 84. e5) 78. e4 g4 79. Nf5+ Kg5 80. Ne3? { (Mate in 10 → 7.09) Lost forced checkmate sequence. Ng3 was best. } { Black resigns. } (80. Ng3 f5 81. Qe7+ Kg6 82. exf5+ Kh6 83. Ne4 Qa1 84. Qg5+ Kh7 85. Nf6+ Qxf6 86. Qxf6 Kg8) 1-0