Dev Builds » 20220213-0005

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 15. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

Host Duration Avg Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo
ncm-dbt-01 06:54:28 584614 3990 953 1075 1962 -10.63 ± 5.02 3 486 1138 366 2 -21.1 ± 9.99
ncm-dbt-02 06:55:38 586499 4018 938 1064 2016 -10.9 ± 5.08 4 500 1127 374 4 -21.82 ± 10.06
ncm-dbt-03 06:55:39 587532 3992 904 1052 2036 -12.89 ± 5.18 7 517 1091 379 2 -24.93 ± 10.26
ncm-dbt-04 06:53:41 570707 4000 939 1080 1981 -12.25 ± 5.21 7 518 1088 383 4 -24.01 ± 10.28
ncm-dbt-05 06:54:30 584091 4000 973 1082 1945 -9.47 ± 5.18 5 501 1095 396 3 -18.61 ± 10.24
20000 4707 5353 9940 -11.23 ± 2.3 26 2522 5539 1898 15 -22.09 ± 4.55

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
399475 ncm-dbt-02 588217 18 5 7 6 -38.76 ± 92.54 0 4 3 2 0 -78.52 ± 215.48
399474 ncm-dbt-01 582193 490 107 128 255 -14.9 ± 15.08 0 70 126 49 0 -29.85 ± 30.39
399473 ncm-dbt-03 586901 492 114 122 256 -5.65 ± 15.53 2 60 129 54 1 -9.89 ± 30.02
399472 ncm-dbt-04 571833 500 120 141 239 -14.6 ± 14.4 0 67 137 46 0 -29.25 ± 29.0
399471 ncm-dbt-05 586646 500 121 137 242 -11.12 ± 14.5 0 65 136 49 0 -22.27 ± 29.14
399470 ncm-dbt-02 583740 500 119 120 261 -0.7 ± 13.83 0 51 150 48 1 -2.78 ± 27.29
399469 ncm-dbt-01 584664 500 112 139 249 -18.78 ± 13.81 0 65 148 36 1 -39.08 ± 27.49
399468 ncm-dbt-03 589326 500 104 123 273 -13.21 ± 14.67 1 65 136 48 0 -25.06 ± 29.14
399467 ncm-dbt-05 584159 500 127 130 243 -2.09 ± 14.61 0 58 138 53 1 -5.56 ± 28.89
399466 ncm-dbt-04 569589 500 113 133 254 -13.91 ± 15.22 0 72 127 50 1 -29.25 ± 30.28
399465 ncm-dbt-02 589027 500 107 124 269 -11.82 ± 14.81 1 64 137 47 1 -23.66 ± 29.01
399464 ncm-dbt-01 585885 500 117 143 240 -18.08 ± 12.77 1 55 163 31 0 -34.86 ± 25.34
399463 ncm-dbt-03 586520 500 112 133 255 -14.6 ± 15.03 1 69 130 50 0 -27.85 ± 29.9
399462 ncm-dbt-04 570909 500 104 126 270 -15.3 ± 14.45 1 65 139 45 0 -29.25 ± 28.74
399461 ncm-dbt-05 583614 500 121 128 251 -4.86 ± 15.11 1 62 130 57 0 -8.34 ± 29.91
399460 ncm-dbt-02 582736 500 109 123 268 -9.73 ± 14.89 1 64 133 52 0 -18.08 ± 29.53
399459 ncm-dbt-01 586181 500 116 137 247 -14.6 ± 15.03 0 71 130 48 1 -30.65 ± 29.9
399458 ncm-dbt-03 587707 500 118 128 254 -6.95 ± 14.01 0 57 147 45 1 -15.3 ± 27.69
399457 ncm-dbt-04 571391 500 109 135 256 -18.08 ± 15.78 1 77 120 51 1 -36.26 ± 31.15
399456 ncm-dbt-05 581444 500 117 154 229 -25.76 ± 14.73 1 76 132 41 0 -50.38 ± 29.62
399455 ncm-dbt-02 588472 500 120 121 259 -0.7 ± 14.49 0 56 140 53 1 -2.78 ± 28.63
399454 ncm-dbt-01 586139 500 128 139 233 -7.64 ± 14.33 1 58 142 49 0 -13.9 ± 28.36
399453 ncm-dbt-03 586562 500 116 133 251 -11.82 ± 14.56 2 60 141 47 0 -20.87 ± 28.49
399452 ncm-dbt-04 572276 500 129 129 242 0.0 ± 15.18 3 53 135 59 0 +4.17 ± 29.28
399451 ncm-dbt-05 580240 500 130 131 239 -0.69 ± 14.74 1 56 136 57 0 -0.0 ± 29.15
399450 ncm-dbt-02 585464 500 109 139 252 -20.87 ± 13.84 0 68 144 38 0 -41.89 ± 28.03
399449 ncm-dbt-01 584748 500 119 133 248 -9.73 ± 13.45 0 56 152 42 0 -19.48 ± 27.0
399448 ncm-dbt-03 587409 500 109 146 245 -25.76 ± 14.34 0 76 135 39 0 -51.8 ± 29.22
399447 ncm-dbt-04 571070 500 119 139 242 -13.9 ± 13.95 1 60 147 42 0 -26.46 ± 27.67
399446 ncm-dbt-05 583782 500 121 138 241 -11.82 ± 14.94 0 68 132 49 1 -25.06 ± 29.65
399445 ncm-dbt-02 585421 500 122 143 235 -14.6 ± 14.53 0 68 135 47 0 -29.25 ± 29.26
399444 ncm-dbt-01 584201 500 136 118 246 +12.51 ± 13.96 0 44 144 62 0 +25.06 ± 28.08
399443 ncm-dbt-03 587919 500 122 124 254 -1.39 ± 14.68 0 59 134 57 0 -2.78 ± 29.41
399442 ncm-dbt-04 571230 500 126 132 242 -4.17 ± 14.54 0 59 139 51 1 -9.73 ± 28.76
399441 ncm-dbt-05 588941 500 118 134 248 -11.12 ± 13.71 0 58 151 40 1 -23.66 ± 27.12
399440 ncm-dbt-02 588387 500 131 149 220 -12.51 ± 14.74 2 61 141 45 1 -23.66 ± 28.48
399439 ncm-dbt-01 582903 500 118 138 244 -13.9 ± 14.85 1 67 133 49 0 -26.46 ± 29.52
399438 ncm-dbt-04 567363 500 119 145 236 -18.08 ± 14.28 1 65 144 39 1 -36.26 ± 28.05
399437 ncm-dbt-03 587919 500 109 143 248 -23.66 ± 14.32 1 71 139 39 0 -46.13 ± 28.7
399436 ncm-dbt-05 583908 500 118 130 252 -8.34 ± 14.65 2 58 140 50 0 -13.9 ± 28.63
399435 ncm-dbt-02 587028 500 116 138 246 -15.3 ± 13.93 0 64 144 42 0 -30.65 ± 28.07

Commit

Commit ID 3ec6e1d2450183ed4975cf569b5a1286cb9d8369
Author Michael Chaly
Date 2022-02-13 00:05:27 UTC
Big search tuning (version 2) One more tuning - this one includes newly introduced heuristics and some other parameters that were not included in previous one. Result of 400k games at 20+0.2 "as is". Tuning is continuing since there is probably a lot more elo to gain. STC: https://tests.stockfishchess.org/tests/view/620782edd71106ed12a497d1 LLR: 2.99 (-2.94,2.94) <0.00,2.50> Total: 38504 W: 10260 L: 9978 D: 18266 Ptnml(0-2): 142, 4249, 10230, 4447, 184 LTC: https://tests.stockfishchess.org/tests/view/6207a243d71106ed12a49d07 LLR: 2.94 (-2.94,2.94) <0.50,3.00> Total: 25176 W: 6793 L: 6546 D: 11837 Ptnml(0-2): 20, 2472, 7360, 2713, 23 closes https://github.com/official-stockfish/Stockfish/pull/3931 Bench: 4784796
Copyright 2011–2025 Next Chess Move LLC