Dev Builds » 20250802-1350

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 06:43:46 583195 4000 1647 509 1844 +101.65 ± 4.81 1 70 738 1172 19 +219.87 ± 12.51
ncm-dbt-02 06:44:44 584540 4004 1653 466 1885 +106.19 ± 4.63 0 52 726 1209 15 +233.01 ± 12.58
ncm-dbt-03 06:43:05 584432 4000 1671 462 1867 +108.4 ± 4.79 1 67 672 1242 18 +238.66 ± 13.14
ncm-dbt-04 06:44:40 569290 4002 1636 467 1899 +104.53 ± 4.86 0 77 699 1204 21 +226.89 ± 12.88
ncm-dbt-05 06:45:31 578165 3994 1668 473 1853 +107.23 ± 4.75 2 58 698 1221 18 +235.65 ± 12.86
20000 8275 2377 9348 +105.59 ± 2.13 4 324 3533 6048 91 +230.74 ± 5.72

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
425790 ncm-dbt-02 583154 4 2 0 2 +190.27 ± 27.79 0 0 0 2 0 +1199.83 ± 312.71
425789 ncm-dbt-04 568991 2 0 0 2 0.0 ± 34.02 0 0 1 0 0 0.0 ± 30.47
425788 ncm-dbt-05 580987 494 206 60 228 +105.84 ± 13.83 0 9 86 149 3 +229.61 ± 36.95
425787 ncm-dbt-01 585464 500 209 69 222 +99.95 ± 13.68 0 8 98 140 4 +211.87 ± 34.38
425786 ncm-dbt-02 583572 500 209 56 235 +109.83 ± 12.88 0 4 92 151 3 +240.82 ± 35.35
425785 ncm-dbt-03 585548 500 204 66 230 +98.44 ± 13.51 0 11 90 149 0 +215.85 ± 36.11
425784 ncm-dbt-04 571029 500 212 62 226 +107.54 ± 14.21 0 14 73 162 1 +238.66 ± 40.04
425783 ncm-dbt-05 573325 500 207 51 242 +112.14 ± 13.73 1 7 79 161 2 +251.89 ± 38.63
425782 ncm-dbt-02 584327 500 215 64 221 +108.3 ± 12.53 0 3 95 150 2 +238.66 ± 34.61
425781 ncm-dbt-01 582235 500 204 44 252 +115.22 ± 13.2 0 8 75 166 1 +261.07 ± 39.69
425780 ncm-dbt-03 586223 500 208 60 232 +106.01 ± 12.53 0 3 98 147 2 +232.26 ± 33.99
425779 ncm-dbt-04 570949 500 198 54 248 +102.97 ± 13.54 0 6 99 140 5 +217.85 ± 34.06
425778 ncm-dbt-05 577561 500 210 65 225 +103.73 ± 13.71 1 6 93 147 3 +226.0 ± 35.35
425777 ncm-dbt-02 585928 500 204 55 241 +106.77 ± 13.23 0 7 89 152 2 +234.38 ± 36.22
425776 ncm-dbt-01 581693 500 199 62 239 +97.69 ± 13.66 0 9 98 140 3 +207.95 ± 34.43
425775 ncm-dbt-03 583740 500 205 73 222 +93.95 ± 14.82 0 16 90 140 4 +196.45 ± 36.11
425774 ncm-dbt-04 569669 500 193 60 247 +94.69 ± 13.93 0 13 92 144 1 +204.07 ± 35.72
425773 ncm-dbt-05 580572 500 207 59 234 +106.01 ± 13.39 0 8 88 152 2 +232.26 ± 36.48
425772 ncm-dbt-01 582485 500 202 67 231 +96.19 ± 13.8 0 12 92 145 1 +207.95 ± 35.71
425771 ncm-dbt-03 584034 500 207 52 241 +111.37 ± 13.73 0 9 80 158 3 +245.2 ± 38.39
425770 ncm-dbt-02 584076 500 201 50 249 +108.3 ± 13.23 0 5 93 148 4 +234.38 ± 35.22
425769 ncm-dbt-04 569869 500 205 50 245 +111.37 ± 13.73 0 9 80 158 3 +245.2 ± 38.39
425768 ncm-dbt-05 580572 500 210 54 236 +112.14 ± 12.69 0 5 85 159 1 +251.89 ± 37.03
425767 ncm-dbt-03 584327 500 207 49 244 +113.68 ± 12.68 0 5 83 161 1 +256.44 ± 37.51
425766 ncm-dbt-01 583363 500 208 69 223 +99.2 ± 13.67 0 11 90 148 1 +215.85 ± 36.11
425765 ncm-dbt-04 567561 500 208 72 220 +96.94 ± 13.81 0 12 91 146 1 +209.91 ± 35.92
425764 ncm-dbt-02 585843 500 209 57 234 +109.07 ± 12.7 0 6 86 158 0 +245.2 ± 36.85
425763 ncm-dbt-05 579785 500 211 63 226 +106.01 ± 13.05 0 6 92 150 2 +232.26 ± 35.5
425762 ncm-dbt-04 568037 500 209 53 238 +112.14 ± 12.51 0 2 93 152 3 +247.41 ± 34.91
425761 ncm-dbt-01 582235 500 209 62 229 +105.25 ± 13.56 0 9 87 152 2 +230.16 ± 36.73
425760 ncm-dbt-03 586477 500 207 50 243 +112.91 ± 12.86 0 6 82 161 1 +254.16 ± 37.82
425759 ncm-dbt-02 583321 500 210 61 229 +106.77 ± 12.88 0 7 87 156 0 +238.66 ± 36.67
425758 ncm-dbt-05 570789 500 217 61 222 +112.14 ± 13.39 0 7 83 157 3 +247.41 ± 37.61
425757 ncm-dbt-03 580282 500 218 59 223 +114.45 ± 13.72 0 8 79 159 4 +251.89 ± 38.63
425756 ncm-dbt-04 569071 500 202 66 232 +96.94 ± 14.12 0 13 90 145 2 +207.95 ± 36.13
425755 ncm-dbt-01 581693 500 204 79 217 +88.74 ± 13.67 1 8 108 131 2 +189.0 ± 32.58
425754 ncm-dbt-02 587409 500 197 56 247 +100.7 ± 13.85 0 11 89 148 2 +217.85 ± 36.33
425753 ncm-dbt-01 586393 500 212 57 231 +111.37 ± 13.39 0 5 90 150 5 +240.82 ± 35.87
425752 ncm-dbt-03 584832 500 215 53 232 +116.78 ± 14.21 1 9 70 167 3 +263.42 ± 41.06
425751 ncm-dbt-04 568434 500 209 50 241 +114.45 ± 13.89 0 8 80 157 5 +249.64 ± 38.38
425750 ncm-dbt-05 581735 500 200 60 240 +99.95 ± 13.68 0 10 92 146 2 +215.85 ± 35.68
425749 ncm-dbt-02 583237 500 206 67 227 +99.2 ± 13.51 0 9 95 144 2 +213.85 ± 35.03

Commit

Commit ID fdd9c34b75767aaebe8d348f3393735af07671a8
Author FauziAkram
Date 2025-08-02 13:50:17 UTC
Re-adding ttHit condition, but this time in the inner block Passed STC: LLR: 2.94 (-2.94,2.94) <0.00,2.00> Total: 150240 W: 39305 L: 38819 D: 72116 Ptnml(0-2): 536, 17541, 38494, 17999, 550 https://tests.stockfishchess.org/tests/view/6887ce577b562f5f7b731a85 Passed LTC: LLR: 2.94 (-2.94,2.94) <0.50,2.50> Total: 159120 W: 41025 L: 40461 D: 77634 Ptnml(0-2): 96, 16974, 44866, 17518, 106 https://tests.stockfishchess.org/tests/view/6887f0ba7b562f5f7b731c5d closes https://github.com/official-stockfish/Stockfish/pull/6193 bench: 3498926
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