Friday, April 10, 2020

From its to her

Leela Chess Zero – Stockfish
Top Chess Engine Championship Season 17 — Superfinal; match game 14; tcec-chess.com, April 10, 2020
Modern Benoni A72

The story continues... 1. d4 Nf6 2. c4 c5 3. d5 e6 4. Nc3 exd5 5. cxd5 d6 6. Nf3 g6 7. Nd2 Bg7 8. e4 0-0 9. Be2 Nbd7. The previous, reverse game went instead 9. ... Na6 10. 0-0 Nc7 11. a4 Re8 12. f3 b6 13. Nc4 Ba6 14. Bg5 h6 15. Be3 Bxc4 16. Bxc4 a6 17. Qd2 Kh7 18. Rab1 Rb8 19. b4 b5 20. axb5 axb5 21. Be2 Nd7 22. bxc5 Nxc5 23. Nxb5 Nxb5 24. Bxb5 Re7 25. Bd3 Reb7 26. Rxb7 Rxb7 27. Rb1 Rxb1+ 28. Bxb1 Qf6 29. Bc2 Qa1+ 30. Qd1 Qa3 31. Qe2 Qa1+ 32. Qd1 Qa3 33. Bf2 Qc3 34. g3 h5 35. Kf1 Kg8 36. Be1 Qe3 37. Bd2 Qa3 38. Kg2 Bf6 39. Qe2 h4 40. Be3 Nd7 41. Qd3 Qb2 42. Bf2 hxg3 43. hxg3 Qb4 44. Qb3 Qd2 45. Qd3 Qb4 46. Be3 Nc5 47. Qd1 Nd7 48. Qb1 Qc3 49. Qb3 Qa1 50. Qb4 Ne5 51. Bf2 Kg7 52. Qb3 g5 53. Bd1 Qa5 54. Qa4 Qd8 55. Be3 Qc8 56. Qc2 Qd8 57. Qc1 Nd3 58. Qd2 Ne5 59. Be2 Qe7 60. Qc2 Qd8 61. Qd2 Ng6 62. Kg1 Qe7 63. Qb4 Ne5 64. Qb1 Ng6 65. Qc2 Qd8 66. Qc6 Qe7 67. Qc8 Qe5 68. Kf2 Qa1 69. Qc1 Qe5 70. Bd3 Qe7 71. Qc8 Qe5 72. Qc1 Qe7 73. Qc2 Ne5 74. Be2 Ng6 75. Qc8 Qe5 76. Qc2 Qe7 77. Kg2 Qd8 78. Qc4 Qe7 79. Bb6 Qe5 80. Qc2 Qe7 81. Be3 Qd8 82. Qd2 Qe7 83. Qb4 Qc7 84. Qb3 Qe7 85. Qc4 Qd8 86. Bd1 Ne5 87. Qc2 Ng6 88. Be2 Qe8 89. Ba6 Ne5 90. Bd4 Qd8 91. Qc3 Ng6 92. Bc8 Bxd4 93. Qxd4+ Ne5 94. Bf5 Qf6 95. f4 gxf4 96. gxf4 Ng4 97. Qxf6+ Nxf6 98. Kf2 Kf8 99. Ke3 Ke7 100. Bh3 Kd8 101. Kd3 Nh5 102. Ke3 Nf6 103. Bg2 Nd7 104. Kd4 f6 105. Ke3 Nc5 106. Bh3 Ke8 107. Kd4 Kd8 108. e5 fxe5+ 109. fxe5 Nb3+ 110. Kc4 Nd2+ 111. Kd3 Nb3 112. e6 Nc5+ 113. Ke3 Ke7 114. Kf3 Na4 115. Kf4 Nb6 116. Bg2 Kf6 117. Be4 Na8 118. Bd3 Nc7 119. Bc4 Ne8 120. Ke4 Ke7 121. Kd4 Nf6 122. Ke3 Ke8 123. Kd4 Ng8 124. Bb5+ Ke7 125. Bd3 Nf6 126. Bb5 Ng8 127. Bf1 Ke8 128. Bd3 Ke7 129. Ke3 Nf6 130. Kd4 Ng8 131. Bc2 Nf6 132. Ba4 Ng8 133. Kc4 Nf6 134. Bb3 Ng8 135. Bc2 Nf6 136. Bg6 Ng8 137. Kb5 Nf6 138. Kc4 Ng8 139. Kb5 Nf6 140. Kc6 Ng4 141. Be4 Nf6 142. Bf3 Ng8 143. Bd1 Nf6 144. Bf3 Ng8 145. Kb6 Nf6 146. Kb7 ½ : ½ Stockfish – Leela Chess Zero, Top Chess Engine Championship Season 17 — Superfinal, April 10, 2020, match game 13. 10. h3 Ne8 11. 0-0 a6 12. a4 Rb8 13. Nc4 Qe7!? A previous terrestrial game continued as follows: 13. ... Qh4 14. a5 Ne5 15. Nxe5 Bxe5 16. f4 Bd4+ 17. Kh2 Ng7 18. Ra4 f5 19. Rxd4 cxd4 20. Qxd4 fxe4 21. Nxe4 Nf5 22. Qc3 Bd7 23. g3? (23. b3!) 23. ... Qe7 24. Bd3 Rbc8 25. Qe1 Bb5 and soon Black won, Jørgensen – Aagaard, 32nd Politiken Cup, Copenhagen 2010. And since after the text Black wil soon be precipitated into a very unpleasant situation, it may well be worth considering 13. ... Ne5 — after which, incidentally, a draw was agreed in Keresztes – Mészáros, Caissa IM April 2011, Kecskemét 2011. 14. f4 Bd4+ 15. Kh2 Ndf6 16. Bf3 Bxc3 17. bxc3 Nxe4 18. Qe1 f5 19. Nb6 N8f6 20. c4 Bd7 21. Ra3 h5 22. Kg1 Rf7 23. Re3


23. ... a5. Black prefers to give back the Pawn rather than being pythonised by a4-a5. 24. Qxa5 Qd8 25. Bb2 h4 26. Rfe1 Kh7 27. Rb3 Qf8. If 27. ... Ng3 then 28. Re6! Bxe6 29. dxe6 Rf8 30. Re3 with an overwhelming advantage for White. 28. Bxf6 Nxf6 29. Qd2 Qg7 30. a5 Kg8 31. Qf2


31. ... g5. No better is 31. ... Qh6 due to 32. Re6! Bxe6 33. dxe6 Re7 34. Nd5 Nxd5 35. Bxd5 Kg7 36. Bxb7!+− (36. ... Rexb7 37. Qb2+). 32. Nxd7 Nxd7 33. Bh5 Rff8 (33. ... Re7 34. Re6!+−) 34. Re6 Nf6 35. Qe2 Qh6 36. Bf3 g4 37. hxg4 fxg4 38. Bxg4 Qxf4 39. Bh3 Qc1+ 40. Qe1 Qxe1+ 41. Rxe1 Kg7 42. Rb6. White wins a Pawn by force and eventually the game. 42. ... Rfd8 43. Reb1 Ra8 44. Rxb7+ Kg6 45. Ra1 Ra6 46. Rb6 Ra7 47. a6 Kg5 48. Rf1 Nh5 49. Rf5+ Kg6 50. Re5! Nf4 51. Kh2 Kh6 52. Rf5 Nh5 53. Bg4 Ng3 54. Re5 Kg6 55. Bd1 Rf7 56. Bc2+ Kf6 57. Re6+ Kg5 58. Rbxd6 Rxd6 59. Rxd6 Ra7 60. Bd3 Kf4 61. Re6 Kg4 62. Kg1 Kg5 63. Kf2 Nh5 64. Kf3 Nf6 65. Ke3 Ng4+ 66. Kd2 Kf4 67. Be2 Ne5 68. Kc3 Rg7 69. Bf1 Ra7 70. Kb3 Ng4 71. Ka4 Ra8 72. Kb5 Ne5 73. Kxc5 Rc8+ 74. Kd4 Nd7 75. Re7 Nc5 76. a7 Nb3+ 77. Kc3 Nc5 78. Kb4 Ne4 79. g3+ Kf3 80. gxh4 Ra8 81. Bg2+ Kxg2 82. Rxe4 Rxa7 83. d6 Rb7+ 84. Kc5 Rf7 85. Re7 Rf5+ 86. Kb6 1 : 0.

So far, Leela Chess Zero is holding its own in its high noon with Stockfish. Credit: Lc0 Blog.

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