Stockfish's blunders in the SSDF games

[Uri Blass]

[pgn][Event "SSDF-match"] [Site "Sundsvall"] [Date "2022.02.06"] [Round "35"] [White "Lc0 0.28.2 Cuda-611213 3060Ti"] [Black "Stockfish 13 x64 1800X"] [Result "1-0"] [ECO "D46"] [BlackElo "3578"] [Annotator "Sandin,Lars"] [PlyCount "289"] [EventDate "2022.01.06"] [EventType "match"] [EventRounds "40"] [EventCountry "SWE"] [TimeControl "40/7200:20/3600:20/3600"] 1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. Nc3 c6 5. e3 Nbd7 6. Qc2 Bd6 7. Bd3 {0.12/20 474} O-O 8. O-O {0.12/25 102} dxc4 9. Bxc4 {0.11/20 246} a6 10. Rd1 {0.10/22 570} b5 11. Bd3 {0.09/17 0} Bb7 12. Ng5 {0.08/23 0} h6 13. Nge4 {0.08/28 0} Bb8 14. b4 {0.08/25 228} a5 15. bxa5 {0.08/25 82} Qxa5 16. Bd2 {0.08/24 142} Rc8 17. Nxb5 {0.06/26 576} cxb5 18. Qxc8+ {0.05/27 2} Bxc8 19. Bxa5 {0.05/26 94} Rxa5 20. Nxf6+ {0.06/24 1} gxf6 21. Rdb1 {0.05/26 38} Ba6 22. a4 {0.06/26 11} bxa4 23. Bxa6 {0.05/25 0} Rxa6 24. Rb7 {0.05/21 0} Ra7 25. Rxa7 {0.05/22 0} Bxa7 26. Rxa4 {0.05/20 0} Bb6 27. g4 {0.05/18 80} h5 28. gxh5 {0.05/18 431} f5 29. d5 {0.05/17 185} exd5 30. Rf4 {0.05/16 238} d4 31. exd4 {0.04/15 2} Nf6 32. d5 {0.04/14 442} Nxd5 33. Rxf5 {0.04/12 1} Ne7 34. Re5 {0.03/11 941} Bd8 35. Re3 {0.02/10 1170} Kg7 36. Rg3+ {0.02/10 124} Kh6 37. Rd3 {0.02/10 174} Ba5 38. Rd6+ {0.02/9 124} Kg5 39. h6 {0.05/10 229} Bc3 40. Rd3 {0.04/11 238} Be5 41. Rd7 {0.05/11 285} Ng6 42. h7 {0.05/12 132} Kf6 43. h4 {0.05/13 132} Kg7 44. h5 {0.05/12 117} Nf4 45. h8=N {0.05/13 675} Kxh8 46. Rxf7 {0.05/11 0} Kg8 47. Rf5 {0.05/10 181} Bb8 48. Rb5 {0.04/10 451} Bd6 49. f3 {0.07/9 121} Kh7 50. Kf2 {0.05/10 157} Kg7 51. Rf5 {0.05/9 276} Kh7 52. Ke3 {0.09/10 80} Ne6 53. Ke4 {0.06/10 137} Ng7 54. Rd5 {0.04/9 188} Bh2 55. Rg5 {0.04/7 95} Bc7 56. Rc5 {0.03/8 0} Bd6 57. Ra5 {0.04/8 330} Bb8 58. Rb5 {0.04/8 134} Bg3 59. Rg5 {0.04/7 62} Bd6 60. Rg6 {0.04/7 242} Bc5 61. Rc6 {0.03/8 413} Bf8 62. Rf6 {0.02/8 433} Bc5 63. Rc6 {0.02/7 168} Bf8 64. Rc8 {0.01/7 399} Ba3 65. Ra8 {0.04/8 233} Bc1 66. Ra1 {0.06/10 197} Bg5 67. f4 {0.09/13 193} Bf6 68. Rh1 {0.09/14 0} Kh6 69. Kf3 {0.09/15 1} Bc3 70. Rh3 {0.06/10 555} Ne8 71. Ke4 {0.08/11 135} Bd2 72. Rh2 {0.06/10 0} Bb4 73. Kf5 {0.05/10 217} Nc7 74. Rh3 {0.13/12 90} Nd5 75. Ke5 {0.11/13 0} Nc7 76. f5 {0.11/14 126} Ne8 77. f6 {0.09/15 80} Nd6 78. Rb3 {0.10/14 174} Bc5 79. Rc3 {0.09/14 24} Nf7+ 80. Kf5 {0.07/11 93} Bd4 81. Rd3 {0.06/11 233} Bf2 82. Rd2 {0.07/12 315} Be1 83. Re2 {0.06/13 266} Bc3 84. Re3 {0.05/13 422} Bd2 85. Rd3 {0.06/11 479} Be1 86. Re3 {0.08/5 0} Bb4 87. Rh3 {0.08/11 380} Ng5 88. Rg3 {0.05/11 81} Bd2 89. Rg2 {0.04/10 161} Bc1 90. Rg1 {0.05/10 171} Be3 91. Rg3 {0.04/10 130} Bd2 92. Rd3 {0.05/10 160} Bc1 93. Rd1 {0.04/9 0} Be3 94. Re1 {0.04/9 205} Bf2 95. Rh1 {0.05/9 118} Bc5 96. Rc1 {0.05/9 107} Be3 97. Re1 {0.05/8 97} Bd4 98. Rd1 {0.04/9 35} Bb2 99. Rb1 {0.03/9 73} Bc3 100. Rg1 {0.03/9 210} Bd2 101. Rg2 {0.05/9 267} Be3 102. Rh2 {0.03/9 363} Bb6 103. Rg2 {0.04/8 260} Be3 104. Rh2 {0.03/9 271} Nh7 105. Ke6 {0.03/8 200} Bg5 106. f7 {0.02/8 27} Be3 107. Rh1 {0.03/8 397} Ng5+ 108. Kf6 {0.03/9 181} Bc5 109. Rh4 {0.02/8 122} Ba3 110. Rh2 {0.02/7 164} Bf8 111. Rh1 {0.02/7 131} Nf3 112. Rh3 {0.02/7 110} Ng5 113. Rh2 {0.02/7 112} Bd6 114. Rh1 {0.02/7 162} Bc5 115. Rh2 {0.02/7 116} Bf8 116. Re2 {0.01/5 182} Ba3 117. Re5 {0.01/5 129} Nh7+ 118. Ke6 {0.00/4 87} Ng5+ 119. Kf6 {0.00/6 72} Nh7+ 120. Ke6 {0.00/3 165} Nf8+ 121. Kf5 {0.02/7 180} Kh7 122. Re3 {0.04/9 246} Bb2 123. Rb3 {0.05/9 284} Bd4 124. Rg3 {0.04/9 256} Bb2 125. Rg8 {0.04/9 272} Ba3 126. Kf6 {0.03/9 156} Nd7+ 127. Kf5 {0.04/10 168} Bb4 128. Rg4 {0.05/9 165} Bc5 129. Rg5 {0.05/9 176} Nf8 130. Kf6 {0.04/9 95} Nd7+ 131. Kf5 {0.04/10 141} Be7 132. Rg6 {0.03/9 243} Nf8 133. Rg3 {0.03/9 145} Kh6 134. Re3 {0.02/8 79} Bd6 135. Rh3 {0.03/7 172} Bc5 136. Rg3 {0.03/8 217} Nh7 137. Rg2 {0.02/7 172} Ba3 138. Rg1 {0.02/7 176} Be7 139. Re1 {0.02/6 150} Bc5 140. Rc1 {0.02/7 179} Bd6 141. Rc6 {#120/1 0} Kg7 142. Rxd6 {#116/1 0} Kxf7 143. Rd7+ {#14/11 212} Kg8 144. h6 {#13/1 0} Nf8 145. Rg7+ {Black resigns} 1-0 [/pgn]

Stockfish13 blundered by 140...Bd6 [d]8/5P1n/7k/2b2K1P/8/8/8/2R5 b - - 68 140 bm Bf8 Bd4 Be7 Be3 Bb4 Ba3 Bf2

[pgn][Event "SSDF-match"] [Site "Sundsvall"] [Date "2022.06.04"] [Round "23"] [White "Lc0 0.28.2 Cuda-611213 3060Ti"] [Black "Stockfish 15 x64 1800X"] [Result "1-0"] [ECO "E97"] [WhiteElo "3591"] [Annotator "Sandin,Lars"] [PlyCount "409"] [EventDate "2022.05.22"] [EventType "match"] [EventRounds "40"] [EventCountry "SWE"] [TimeControl "40/7200:20/3600:20/3600"] 1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be2 e5 7. O-O Nc6 8. d5 Ne7 9. b4 {0.35/17 419} a5 10. bxa5 {0.34/18 74} Rxa5 11. a4 {0.34/19 112} Ra8 12. Be3 {0.34/19 197} Ng4 13. Bd2 {0.34/17 41} b6 14. Ne1 {0.33/17 293} Nf6 15. Nd3 {0.32/15 221} Kh8 16. Ra3 {0.32/15 641} Ne8 17. f3 {0.31/18 416} f5 18. Nf2 {0.31/16 190} Ng8 19. Qc1 {0.31/16 0} Bd7 20. Nb5 {0.28/15 264} Ngf6 21. Re1 {0.29/12 305} Rf7 22. Bd3 {0.30/12 173} Rf8 23. Rd1 {0.30/12 151} Qc8 24. Qc2 {0.30/13 258} fxe4 25. Bxe4 {0.29/18 102} Nxe4 26. Nxe4 {0.28/17 26} Nf6 27. Qd3 {0.30/15 255} h6 28. h3 {0.34/15 261} Kh7 29. Rda1 {0.32/20 172} Rf7 30. Kh2 {0.31/21 105} Qb8 31. Qe2 {0.33/17 350} Qd8 32. R1a2 {0.29/20 257} Nxe4 33. fxe4 {0.28/20 0} h5 34. Rf3 {0.27/18 1} Rxf3 35. Qxf3 {0.26/18 1} Be8 36. Qe3 {0.27/14 706} Qe7 37. Ra3 {0.25/14 445} Qd8 38. Kh1 {0.29/12 250} Qe7 39. Kg1 {0.25/14 106} Qd8 40. Kh2 {0.27/13 380} Qe7 41. Ra1 {0.26/13 2} Qd8 42. Ra2 {0.28/12 248} Qe7 43. Ra3 {0.25/14 271} Bf6 44. Kg1 {0.23/13 239} Bg7 45. Ra1 {0.25/12 272} Qd8 46. Ra2 {0.27/12 229} Qe7 47. Ra3 {0.26/13 187} Qd8 48. Ra2 {0.27/12 243} Qe7 49. Ra1 {0.24/14 209} Qd8 50. Kh1 {0.26/13 177} Qe7 51. Kh2 {0.25/13 92} Qd8 52. Ra3 {0.25/13 232} Qe7 53. Ra2 {0.23/14 38} Qd8 54. Bc1 {0.23/15 213} Qe7 55. Bd2 {0.24/12 172} Qd8 56. Bc1 {0.23/12 77} Qe7 57. Kh1 {0.24/12 105} Bf8 58. Bd2 {0.24/12 229} Bg7 59. Ra3 {0.22/13 155} Qf7 60. Kg1 {0.22/13 28} Qe7 61. Bc1 {0.22/12 107} Qd8 62. Kh2 {0.21/13 315} Qe7 63. Kg1 {0.21/13 536} Kg8 64. Qg5 {0.21/11 422} Bf6 65. Qh6 {0.19/15 298} Bg7 66. Qe3 {0.21/12 220} Kh7 67. Ra1 {0.20/13 205} Bf8 68. Ra2 {0.22/12 274} Bg7 69. Bd2 {0.19/12 200} Bf8 70. Bc1 {0.20/13 68} Bg7 71. Ra1 {0.19/13 0} Bf8 72. Kh1 {0.20/13 262} Bg7 73. Ra3 {0.19/14 165} Qf7 74. Kh2 {0.19/12 89} Qe7 75. Qd2 {0.18/12 87} Qd8 76. Ra1 {0.19/12 83} Qe7 77. Kg1 {0.18/12 93} Qf7 78. Qe3 {0.18/12 82} Qe7 79. Qd2 {0.17/12 148} Qd8 80. Kh2 {0.18/11 88} Qe7 81. Qe3 {0.17/11 0} Qd7 82. Qg3 {0.10/15 379} Bh6 83. Bg5 {0.08/17 256} Qf7 84. Ra3 {0.07/19 336} Bxb5 85. Rf3 {0.06/22 204} Qg7 86. Bxh6 {0.05/21 412} Kxh6 87. cxb5 {0.06/23 7} Rxa4 88. Qh4 {0.05/26 19} Rb4 89. g4 {0.06/20 492} Ra4 90. Rf6 {0.05/20 9} Kh7 91. Qg5 {0.06/19 162} Ra2+ 92. Kh1 {0.04/19 337} hxg4 93. h4 {0.03/16 0} Ra1+ 94. Kg2 {0.03/14 140} Ra2+ 95. Kg1 {0.02/11 183} Ra1+ 96. Kg2 {0.02/10 55} Ra2+ 97. Kh1 {0.02/11 172} Ra1+ 98. Kh2 {0.02/13 0} g3+ 99. Kg2 {0.02/15 178} Ra2+ 100. Kxg3 {0.01/10 119} Ra8 101. Re6 {0.01/13 59} Rf8 102. Kh2 {0.00/11 292} Rf2+ 103. Kh1 {0.00/7 310} Rf1+ 104. Kh2 {0.00/5 0} Rf2+ 105. Kh1 {0.00/5 0} Rf4 106. h5 {0.01/16 718} gxh5 107. Qxh5+ {0.00/21 0} Kg8 108. Rg6 {0.01/20 0} Rh4+ 109. Qxh4 {0.01/17 0} Qxg6 110. Qd8+ {0.01/16 0} Kg7 111. Qxc7+ {0.02/15 319} Kh6 112. Qxb6 {0.02/14 251} Qxe4+ 113. Kh2 {0.02/12 296} Qe2+ 114. Kg3 {0.02/10 504} Qd3+ 115. Kg4 {0.02/10 146} Qxd5 116. Qe3+ {0.03/13 145} Kg6 117. b6 {0.03/13 58} e4 118. Kg3 {0.02/10 225} Qe5+ 119. Kh3 {0.02/9 255} Qe6+ 120. Kg3 {0.03/10 168} Qe5+ 121. Qf4 {0.03/1 0} Qc3+ 122. Kg2 {0.01/8 249} Qb2+ 123. Qf2 {0.02/9 127} Qb1 124. Qd4 {0.04/10 219} Qc2+ 125. Kg1 {0.03/10 332} Qb1+ 126. Kg2 {0.04/10 234} Qc2+ 127. Kg1 {0.04/10 145} Kh7 128. Qf2 {0.06/11 239} Qd1+ 129. Kh2 {0.04/12 67} Qd5 130. Kg3 {0.04/11 248} Qg5+ 131. Kh3 {0.04/11 101} Qd5 132. Kh2 {0.04/10 231} Qh5+ 133. Kg3 {0.04/11 163} Qg6+ 134. Kh2 {0.05/11 151} Qh6+ 135. Kg2 {0.05/11 183} Qg5+ 136. Kh3 {0.04/11 185} Qd5 137. Kh2 {0.05/10 147} Kg6 138. Qc2 {0.04/9 185} Qe5+ 139. Kh3 {0.04/10 176} Qh5+ 140. Kg2 {0.03/11 203} Qg5+ 141. Kh1 {0.04/10 183} Qe7 142. Kg1 {0.04/11 204} Kh5 143. Qe2+ {0.06/11 261} Kh6 144. Qh2+ {0.05/11 196} Kg5 145. Qg2+ {0.05/12 83} Kf5 146. Qf1+ {0.04/13 5} Kg6 147. Qf2 {0.03/13 450} Qb7 148. Kh2 {0.04/9 1} Qa6 149. Kh3 {0.03/9 308} Qb7 150. Kh2 {0.04/9 149} Qd5 151. Qc2 {0.03/10 210} Kh6 152. Qc3 {0.03/9 170} Qa2+ 153. Kg3 {0.04/11 99} Kg6 154. Qb4 {0.05/12 188} Qd5 155. b7 {0.04/12 103} Qg5+ 156. Kf2 {0.02/11 281} e3+ 157. Kf3 {0.01/8 116} Qf5+ 158. Kg3 {0.01/8 155} Qf2+ 159. Kh3 {0.00/8 141} Qf1+ 160. Kg4 {0.01/8 242} Qg1+ 161. Kh3 {0.00/8 235} Qf1+ 162. Kg4 {0.00/7 121} Qg2+ 163. Kf4 {0.00/6 298} Qf2+ 164. Kg4 {0.00/1 0} Qg2+ 165. Kh4 {0.00/5 0} Qh2+ 166. Kg4 {0.00/1 0} Qe2+ 167. Kg3 {0.00/5 672} Qf2+ 168. Kh3 {0.00/4 174} Qf5+ 169. Kh4 {0.00/3 171} Qf6+ 170. Kg4 {0.00/4 160} Qf5+ 171. Kh4 {0.00/3 163} Qf6+ 172. Kh3 {0.00/3 179} Qe6+ 173. Kh2 {0.01/8 173} e2 174. Qb1+ {0.01/8 142} Kg5 175. Qc1+ {0.00/7 238} Kg4 176. Qg1+ {0.00/7 124} Kh5 177. Qe1 {0.00/6 146} Qe5+ 178. Kh3 {0.00/7 190} Qf5+ 179. Kh2 {0.00/7 150} Qe5+ 180. Kh3 {0.00/7 248} d5 181. Qh4+ {0.00/5 233} Kg6 182. Qg4+ {0.00/6 184} Kf6 183. Qh4+ {0.00/6 78} Kg6 184. Qg4+ {0.00/7 91} Kh7 185. Qh4+ {0.00/5 223} Kg7 186. Qg4+ {0.00/6 297} Kf7 187. Qd7+ {0.00/5 148} Kg8 188. Qd8+ {0.00/6 221} Kf7 189. Qd7+ {0.00/6 95} Kf6 190. Qd8+ {0.00/7 126} Kg6 191. Qg8+ {0.00/6 192} Kh6 192. Qf8+ {0.00/5 184} Kh7 193. Qf7+ {0.00/5 171} Kh6 194. Qf8+ {0.00/5 128} Kg5 195. Qg8+ {0.00/5 285} Kf5 196. Qf8+ {0.00/6 175} Kg6 197. Qg8+ {0.00/6 110} Kf5 198. Qf8+ {0.00/5 207} Qf6 199. Qc8+ {0.00/6 201} Kg5 200. Qg8+ {0.00/6 192} Qg6 201. b8=Q {#135/1 0} e1=Q 202. Qbd8+ {#124/1 0} Kf4 203. Qdf8+ {#123/1 0} Ke3 204. Qxg6 {#122/1 0} Qh1+ 205. Kg4 {Black resigns} 1-0 [/pgn]

Stockfish15 blundered by 200...Qg6 [d]6Q1/1P6/5q2/3p2k1/8/7K/4p3/8 b - - 39 200 bm Kh6

[pgn][Event "SSDF-match"] [Site "Sundsvall"] [Date "2021.09.26"] [Round "10"] [White "Stockfish 14 x64 1800X"] [Black "Lc0 0.26.3 Cuda(67362) 3060Ti"] [Result "0-1"] [ECO "B80"] [BlackElo "3581"] [Annotator "Sandin,Lars"] [PlyCount "168"] [EventDate "2021.09.23"] [EventType "match"] [EventRounds "40"] [EventCountry "SWE"] [TimeControl "40/7200:20/3600:20/3600"] 1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 a6 6. Be3 e6 7. f3 b5 8. Qd2 Nbd7 {-0.27/22 138} 9. a3 h5 {-0.13/15 135} 10. O-O-O Bb7 {-0.14/19 0} 11. Rg1 Rc8 {-0.12/20 147} 12. Kb1 Be7 {-0.11/19 60} 13. Be2 Ne5 {-0.11/19 12} 14. Bg5 Ng6 {-0.08/23 382} 15. Rge1 O-O {-0.06/25 312} 16. f4 Nxe4 {-0.06/27 142} 17. Nxe4 Bxe4 {-0.06/25 62} 18. Bxh5 Bxg5 {-0.03/24 503} 19. fxg5 d5 {-0.03/23 49} 20. Bf3 Qc7 {-0.02/24 1} 21. Bxe4 dxe4 {-0.02/21 227} 22. Rxe4 Rfd8 {0.01/19 463} 23. Qe2 Qxh2 {0.00/17 132} 24. Rf1 Qd6 {0.00/16 137} 25. Rh1 Qd5 {0.00/16 479} 26. Nf3 Qf5 {0.00/16 262} 27. g3 Qd5 {0.02/14 309} 28. Nh4 Qxg5 {0.02/21 351} 29. Nxg6 Qxg6 {0.00/28 1} 30. Reh4 Kf8 {0.00/26 0} 31. Qg2 Rc7 {0.00/25 0} 32. Rh8+ Ke7 {-0.01/1 0} 33. Rxd8 Kxd8 {-0.01/21 1} 34. Rd1+ Rd7 {-0.01/20 0} 35. Qa8+ Ke7 {-0.01/18 0} 36. Rxd7+ Kxd7 {-0.02/17 0} 37. Qxa6 Qf5 {-0.01/15 316} 38. Qa7+ Kc8 {-0.01/13 721} 39. b3 g5 {0.00/13 498} 40. Qa6+ Kc7 {0.00/12 857} 41. a4 bxa4 {0.00/12 314} 42. Qa7+ Kd6 {0.00/11 687} 43. Qb6+ Kd7 {0.00/11 46} 44. bxa4 Qe5 {0.01/12 201} 45. a5 Qxg3 {0.03/16 371} 46. Qb7+ Qc7 {0.04/12 165} 47. Qb5+ Qc6 {0.02/11 325} 48. Qxg5 f5 {0.02/10 0} 49. Qd2+ Kc7 {0.01/9 315} 50. Qb4 Qd6 {0.01/8 275} 51. Qc4+ Kb8 {0.02/10 154} 52. Kc1 f4 {0.05/10 129} 53. Qb3+ Ka7 {0.05/10 100} 54. Qf3 e5 {0.05/10 152} 55. c4 Qd4 {0.04/13 130} 56. Qd5 Qc3+ {0.04/11 115} 57. Kd1 f3 {0.04/10 0} 58. Qd7+ Kb8 {0.02/8 167} 59. Qd8+ Kb7 {0.02/9 209} 60. Qd7+ Ka8 {0.02/11 192} 61. Qc8+ Ka7 {0.01/1 0} 62. Qc7+ Ka8 {0.00/5 374} 63. Qc8+ Ka7 {0.05/1 0} 64. Qc7+ Ka8 {0.00/3 394} 65. Qd8+ Kb7 {0.01/6 628} 66. Qd5+ Kc8 {0.03/13 407} 67. Qe6+ Kd8 {0.03/10 370} 68. Qd6+ Ke8 {0.03/10 198} 69. Qe6+ Kd8 {0.03/12 163} 70. Qd6+ Ke8 {0.03/11 141} 71. Qg6+ Kd7 {0.03/11 110} 72. Qf7+ Kc8 {0.02/13 60} 73. Qe8+ Kc7 {0.03/10 122} 74. Qe7+ Kc6 {0.03/8 130} 75. Qe6+ Kb7 {0.02/13 0} 76. Qb6+ Kc8 {0.02/7 105} 77. Qc6+ Kb8 {0.01/6 88} 78. Qd6+ Kb7 {0.02/8 138} 79. Qd7+ Ka6 {0.01/5 83} 80. c5 Qd4+ {#118/1 0} 81. Qxd4 exd4 {#117/1 0} 82. Ke1 d3 {#114/1 0} 83. c6 Ka7 {#115/2 0} 84. Kf2 d2 {White resigns} 0-1 [/pgn]

Stockfish14 blundered by 80.c5 [d]8/3Q4/k7/P3p3/2P5/2q2p2/8/3K4 w - - 44 80 bm Qb5+ Qc6+ Qd6+ Qe6+ Qc8+ Qc7

These blunders are in the last move of the time control and reduce the rating of stockfish13,14,15(there may be more games and I searched only for losses and not for cases when the blunder caused stockfish to draw instead of win).

I am not sure if it was a problem of previous versions of stockfish in the ssdf rating list.

[Uri]

Chess engines still have many flaws compared to humans. I don't think chess engines understand the game as well as human Super-GMs do.

Garry Kasparov still plays much better chess both strategically and positionally.

Quality and imagination are important too and in human games the quality and imagination is still much higher than in chess engine games.

I think it could take 100,000 years from now before chess engines could match human understanding of chess and human quality of play and 100,000 years is a very long time.

[dkappe]

Chess engines still have many flaws compared to humans. I don't think chess engines understand the game as well as human Super-GMs do.

Garry Kasparov still plays much better chess both strategically and positionally.

Quality and imagination are important too and in human games the quality and imagination is still much higher than in chess engine games.

I think it could take 100,000 years from now before chess engines could match human understanding of chess and human quality of play and 100,000 years is a very long time.

From the human analysis of computer games I’ve reviewed, i think the places where humans outperform engines are mostly unusual positions like extremely blocked ones. With NNUE and lc0, humans are not just tactically but also positionally far behind.

[Uri]

From the human analysis of computer games I’ve reviewed, i think the places where humans outperform engines are mostly unusual positions like extremely blocked ones. With NNUE and lc0, humans are not just tactically but also positionally far behind.

I think that's because there are certain differences between how the human brain works and how the electronic computer works.

But I think that sometimes humans can see deeper into the game while the computer just gets stuck on a certain score and cannot see deeper into the game.

[Uri]

Computers use brute force calculation and number crunching, that's why they're so good. Computers are simply faster than humans and they never get tired or distracted by anything.

But in the end of the day, Chess is also a game of skill.

Take note that back in 1996 Deep Blue calculated 100 million positions per second but still lost 4-2 to Kasparov.

So I think this shows that brute force calculation isn't everything in chess, it also takes good heuristics and a good evaluation function to make a good chess engine.

[syzygy]

Chess engines still have many flaws compared to humans. I don't think chess engines understand the game as well as human Super-GMs do.

Humans playing chess definitely have far more flaws than chess engines.

But I'm not sure why you pick this thread to suggest that chess engine can't play chess? Uri Blass points out what seems to be a problem in SF's time management.

Computers use brute force calculation and number crunching, that's why they're so good. Computers are simply faster than humans and they never get tired or distracted by anything.

But in the end of the day, Chess is also a game of skill.

Take note that back in 1996 Deep Blue calculated 100 million positions per second but still lost 4-2 to Kasparov.

OK, so you haven't closely followed the development of computer chess over the last 25 years.

[syzygy]

These blunders are in the last move of the time control and reduce the rating of stockfish13,14,15(there may be more games and I searched only for losses and not for cases when the blunder caused stockfish to draw instead of win).

I am not sure if it was a problem of previous versions of stockfish in the ssdf rating list.

This is a very interesting observation which suggests that there is a problem with SF's time management which is not caught by regular SF testing.

I never understand what the numbers mean that are in the pgn data and whether they apply to white or black. Do you know if Stockfish indeed had to move instantly to make the time control? Perhaps it thinks it will make the time control one move earlier, so it leaves itself no time for thinking on the last move?

[Uri Blass]

These blunders are in the last move of the time control and reduce the rating of stockfish13,14,15(there may be more games and I searched only for losses and not for cases when the blunder caused stockfish to draw instead of win).

I am not sure if it was a problem of previous versions of stockfish in the ssdf rating list.

This is a very interesting observation which suggests that there is a problem with SF's time management which is not caught by regular SF testing.

I never understand what the numbers mean that are in the pgn data and whether they apply to white or black. Do you know if Stockfish indeed had to move instantly to make the time control? Perhaps it thinks it will make the time control one move earlier, so it leaves itself no time for thinking on the last move?

I guess the numbers are evaluations and depth of one of the engines in the games.
I believe stockfish had to move instantly in the last move in order not to lose on time but I think the pgn does not include data about remaining time.

Note that ssdf still did not test stockfish16 and stockfish15 is the last version that the ssdf tested.

[Jouni]

Current SF still loses with X/Y time control. Issue never fixed! https://github.com/official-stockfish/S ... ssues/4000.

[Steve Maughan]

Chess engines still have many flaws compared to humans. I don't think chess engines understand the game as well as human Super-GMs do.

Garry Kasparov still plays much better chess both strategically and positionally.

Quality and imagination are important too and in human games the quality and imagination is still much higher than in chess engine games.

I think it could take 100,000 years from now before chess engines could match human understanding of chess and human quality of play and 100,000 years is a very long time.

I agree that chess engines have flaws but everything else I 100% disagree with. The neural net evaluations are now far superior to human evaluations, and the search has for some time been better than humans. How are you measuring, “quality”, “imagination”, and “understanding”?

Steve