Dev Builds » 20260218-2039

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 06:41:39 582843 4000 1722 384 1894 +120.87 ± 4.52 1 31 619 1327 22 +274.53 ± 13.64
ncm-dbt-02 06:43:26 585926 4000 1710 358 1932 +122.24 ± 4.6 0 36 607 1326 31 +275.76 ± 13.8
ncm-dbt-03 06:43:23 583870 4000 1734 346 1920 +125.78 ± 4.43 0 29 575 1375 21 +290.34 ± 14.17
ncm-dbt-04 06:42:15 568084 4000 1747 384 1869 +123.32 ± 4.6 0 32 609 1323 36 +277.62 ± 13.76
ncm-dbt-05 06:43:09 583851 4000 1731 391 1878 +121.06 ± 4.53 0 33 619 1323 25 +273.92 ± 13.65
20000 8644 1863 9493 +122.65 ± 2.03 1 161 3029 6674 135 +278.36 ± 6.17

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
457559 ncm-dbt-02 584453 500 209 47 244 +116.77 ± 13.71 0 9 73 165 3 +261.07 ± 40.24
457558 ncm-dbt-03 582736 500 221 41 238 +130.94 ± 12.95 0 8 55 186 1 +312.48 ± 46.38
457557 ncm-dbt-05 579909 500 221 58 221 +117.55 ± 12.82 0 3 85 158 4 +261.07 ± 36.86
457556 ncm-dbt-04 568315 500 219 56 225 +117.55 ± 13.0 0 5 80 162 3 +263.42 ± 38.27
457555 ncm-dbt-01 581569 500 220 52 228 +121.45 ± 12.2 0 3 77 169 1 +280.42 ± 38.93
457554 ncm-dbt-02 588813 500 209 41 250 +121.45 ± 13.14 0 3 82 159 6 +268.17 ± 37.61
457553 ncm-dbt-04 566572 500 213 54 233 +114.45 ± 13.03 0 4 87 155 4 +251.89 ± 36.48
457552 ncm-dbt-03 584622 500 209 45 246 +118.33 ± 12.63 0 4 80 164 2 +268.17 ± 38.21
457551 ncm-dbt-05 583572 500 221 53 226 +121.45 ± 12.4 0 5 72 173 0 +282.94 ± 40.5
457550 ncm-dbt-01 582903 500 215 49 236 +119.89 ± 12.79 0 5 76 167 2 +273.0 ± 39.35
457549 ncm-dbt-02 584285 500 205 44 251 +116.0 ± 12.84 0 5 81 162 2 +261.07 ± 38.02
457548 ncm-dbt-05 582360 500 206 56 238 +107.54 ± 12.71 0 4 94 150 2 +236.51 ± 34.92
457547 ncm-dbt-03 584958 500 217 43 240 +126.17 ± 12.1 0 1 77 169 3 +290.66 ± 38.7
457546 ncm-dbt-04 567403 500 217 45 238 +124.6 ± 12.71 0 7 64 179 0 +293.29 ± 43.07
457545 ncm-dbt-01 582569 500 212 46 242 +119.89 ± 13.68 0 7 75 163 5 +265.78 ± 39.69
457544 ncm-dbt-02 586520 500 221 48 231 +125.38 ± 13.43 0 6 70 169 5 +282.94 ± 41.13
457543 ncm-dbt-05 581153 500 223 46 231 +128.55 ± 12.82 0 2 75 167 6 +290.66 ± 39.4
457542 ncm-dbt-04 567205 500 225 52 223 +125.38 ± 13.79 0 5 75 162 8 +275.45 ± 39.63
457541 ncm-dbt-03 580613 500 211 49 240 +116.77 ± 13.01 0 6 78 164 2 +263.42 ± 38.85
457540 ncm-dbt-01 581818 500 206 46 248 +115.22 ± 13.2 0 5 84 157 4 +254.16 ± 37.27
457539 ncm-dbt-02 585717 500 220 49 231 +123.81 ± 13.28 0 4 77 163 6 +275.45 ± 39.01
457538 ncm-dbt-05 581070 500 212 44 244 +121.45 ± 13.66 0 7 73 165 5 +270.57 ± 40.25
457537 ncm-dbt-01 583572 500 223 57 220 +119.89 ± 12.98 0 2 86 156 6 +263.42 ± 36.51
457536 ncm-dbt-04 569111 500 215 33 252 +132.54 ± 13.47 0 1 77 161 11 +290.66 ± 38.7
457535 ncm-dbt-03 582903 500 213 43 244 +123.02 ± 12.56 0 4 74 170 2 +282.94 ± 39.86
457534 ncm-dbt-05 578424 500 216 50 234 +119.89 ± 12.04 0 3 78 169 0 +277.93 ± 38.66
457533 ncm-dbt-02 587537 500 217 44 239 +125.38 ± 12.89 0 4 73 169 4 +285.49 ± 40.16
457532 ncm-dbt-04 568315 500 220 50 230 +123.02 ± 11.77 0 1 79 169 1 +285.49 ± 38.15
457531 ncm-dbt-01 585928 500 216 35 249 +131.74 ± 12.74 0 5 62 180 3 +309.64 ± 43.82
457530 ncm-dbt-03 585590 500 219 48 233 +123.81 ± 12.16 0 1 80 166 3 +282.94 ± 37.88
457529 ncm-dbt-02 584495 500 211 44 245 +120.67 ± 12.41 0 2 82 163 3 +273.0 ± 37.5
457528 ncm-dbt-05 586943 500 219 39 242 +130.94 ± 12.56 0 3 68 175 4 +304.07 ± 41.65
457527 ncm-dbt-04 570629 500 216 42 242 +126.17 ± 13.06 0 5 70 171 4 +288.06 ± 41.11
457526 ncm-dbt-01 582360 500 215 42 243 +125.38 ± 11.72 0 1 76 172 1 +293.29 ± 38.98
457525 ncm-dbt-03 583950 500 216 37 247 +130.14 ± 12.39 0 3 68 176 3 +304.07 ± 41.65
457524 ncm-dbt-02 585590 500 218 41 241 +128.55 ± 12.24 0 3 69 176 2 +301.33 ± 41.33
457523 ncm-dbt-01 582027 500 215 57 228 +113.68 ± 12.68 1 3 83 163 0 +261.07 ± 37.44
457522 ncm-dbt-04 567126 500 222 52 226 +123.02 ± 13.11 0 4 77 164 5 +275.45 ± 39.01
457521 ncm-dbt-05 597380 500 213 45 242 +121.45 ± 13.31 0 6 74 166 4 +273.0 ± 39.95
457520 ncm-dbt-03 585590 500 228 40 232 +137.37 ± 12.36 0 2 63 180 5 +324.17 ± 43.32

Commit

Commit ID 5b5986b09503d9ec74d409b8c6f22fe538c48b48
Author rn5f107s2
Date 2026-02-18 20:39:06 UTC
Add en passant santization tests to the CI and pos is ok closes https://github.com/official-stockfish/Stockfish/pull/6615 No functional change
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