Dev Builds » 20260824-1624

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	06:48:23	583902	4000	1818 285 1897	+140.32 ± 4.24	0 13 475 1478 34	+337.64 ± 15.6
ncm-dbt-02	06:48:55	590751	3990	1822 287 1881	+140.91 ± 4.37	0 20 461 1473 41	+337.15 ± 15.87
ncm-dbt-03	06:46:30	577710	4000	1800 309 1891	+136.06 ± 4.27	0 13 513 1444 30	+323.05 ± 14.98
ncm-dbt-04	06:48:14	567220	4012	1801 314 1897	+135.21 ± 4.44	0 18 527 1417 44	+314.87 ± 14.8
ncm-dbt-05	06:49:09	602647	3998	1812 300 1886	+138.26 ± 4.26	0 12 496 1458 33	+330.13 ± 15.24
			20000	9053 1495 9452	+138.14 ± 1.93	0 76 2472 7270 182	+328.39 ± 6.83

Test Detail

ID	Host	Base NPS	Games	WLD	Standard Elo	Ptnml(0-2)	Gamepair Elo	PGN
483778	ncm-dbt-04	568633	12	5 0 7	+153.98 ± 123.22	0 0 2 3 1	+279.41 ± 548.26	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 132197833 \ -pgnout ncm-dbt-20260824-1624-041.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483777	ncm-dbt-02	589882	490	220 36 234	+137.17 ± 12.31	0 4 55 184 2	+332.43 ± 46.64	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3566266140 \ -pgnout ncm-dbt-20260824-1624-040.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483776	ncm-dbt-05	602739	498	221 27 250	+142.89 ± 12.16	0 0 62 180 7	+338.83 ± 43.4	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2625452991 \ -pgnout ncm-dbt-20260824-1624-039.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483775	ncm-dbt-01	584537	500	226 35 239	+139.81 ± 12.26	0 1 63 180 6	+330.23 ± 43.2	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1007741208 \ -pgnout ncm-dbt-20260824-1624-038.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483774	ncm-dbt-03	578753	500	221 33 246	+137.37 ± 11.29	0 0 64 184 2	+333.32 ± 42.66	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4288380382 \ -pgnout ncm-dbt-20260824-1624-037.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483773	ncm-dbt-04	568673	500	227 38 235	+138.18 ± 12.73	0 2 64 177 7	+321.19 ± 42.95	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1195516861 \ -pgnout ncm-dbt-20260824-1624-036.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483772	ncm-dbt-02	589924	500	229 40 231	+138.18 ± 11.7	0 1 62 184 3	+333.32 ± 43.57	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2384303643 \ -pgnout ncm-dbt-20260824-1624-035.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483771	ncm-dbt-01	582778	500	227 34 239	+141.44 ± 11.55	0 2 55 191 2	+349.43 ± 46.59	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2548802508 \ -pgnout ncm-dbt-20260824-1624-034.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483770	ncm-dbt-03	570629	500	217 32 251	+134.95 ± 12.44	0 2 66 177 5	+315.35 ± 42.24	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 248192139 \ -pgnout ncm-dbt-20260824-1624-033.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483769	ncm-dbt-05	604262	500	227 47 226	+130.94 ± 12.95	0 3 70 171 6	+298.62 ± 41.01	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 485609576 \ -pgnout ncm-dbt-20260824-1624-032.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483768	ncm-dbt-04	567839	500	221 36 243	+134.95 ± 12.44	0 1 69 174 6	+312.48 ± 41.11	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2857773971 \ -pgnout ncm-dbt-20260824-1624-031.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483767	ncm-dbt-01	584159	500	225 39 236	+135.75 ± 11.58	0 0 67 180 3	+324.16 ± 41.61	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4229670989 \ -pgnout ncm-dbt-20260824-1624-030.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483766	ncm-dbt-02	592374	500	224 29 247	+143.07 ± 12.75	0 3 56 184 7	+339.63 ± 46.2	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1802240738 \ -pgnout ncm-dbt-20260824-1624-029.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483765	ncm-dbt-03	580489	500	224 52 224	+124.6 ± 12.33	0 2 77 168 3	+285.49 ± 38.83	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 980890475 \ -pgnout ncm-dbt-20260824-1624-028.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483764	ncm-dbt-05	603993	500	228 37 235	+139.81 ± 11.4	0 1 59 188 2	+342.85 ± 44.76	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3475428614 \ -pgnout ncm-dbt-20260824-1624-027.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483763	ncm-dbt-04	566138	500	230 35 235	+143.07 ± 11.69	0 3 51 194 2	+356.21 ± 48.54	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1512346827 \ -pgnout ncm-dbt-20260824-1624-026.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483762	ncm-dbt-02	591340	500	228 34 238	+142.25 ± 12.78	0 2 60 180 8	+333.32 ± 44.47	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3221590286 \ -pgnout ncm-dbt-20260824-1624-025.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483761	ncm-dbt-01	582736	500	224 32 244	+140.62 ± 11.36	0 1 58 189 2	+346.12 ± 45.18	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2461527942 \ -pgnout ncm-dbt-20260824-1624-024.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483760	ncm-dbt-03	577766	500	231 38 231	+141.44 ± 11.98	0 1 60 184 5	+339.63 ± 44.35	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3578237651 \ -pgnout ncm-dbt-20260824-1624-023.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483759	ncm-dbt-05	602605	500	225 44 231	+131.74 ± 11.94	0 2 67 179 2	+312.48 ± 41.9	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 678904900 \ -pgnout ncm-dbt-20260824-1624-022.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483758	ncm-dbt-04	566138	500	220 48 232	+124.6 ± 12.53	0 2 78 166 4	+282.94 ± 38.55	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1271394537 \ -pgnout ncm-dbt-20260824-1624-021.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483757	ncm-dbt-02	589240	500	231 37 232	+142.25 ± 12.16	0 3 54 189 4	+346.12 ± 47.1	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2891514553 \ -pgnout ncm-dbt-20260824-1624-020.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483756	ncm-dbt-01	582778	500	233 43 224	+138.99 ± 12.3	0 3 58 185 4	+333.32 ± 45.35	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3795076654 \ -pgnout ncm-dbt-20260824-1624-019.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483755	ncm-dbt-03	578383	500	214 39 247	+126.97 ± 12.28	0 2 74 171 3	+293.29 ± 39.69	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1104614438 \ -pgnout ncm-dbt-20260824-1624-018.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483754	ncm-dbt-05	604397	500	229 36 235	+141.44 ± 11.55	0 2 55 191 2	+349.43 ± 46.59	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1445260782 \ -pgnout ncm-dbt-20260824-1624-017.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483753	ncm-dbt-04	566020	500	226 41 233	+134.95 ± 13.03	0 4 63 177 6	+312.48 ± 43.44	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1021631785 \ -pgnout ncm-dbt-20260824-1624-016.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483752	ncm-dbt-01	583447	500	229 28 243	+148.02 ± 12.32	0 2 52 189 7	+359.68 ± 48.01	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 332015353 \ -pgnout ncm-dbt-20260824-1624-015.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483751	ncm-dbt-03	580613	500	233 33 234	+147.19 ± 11.7	0 1 53 191 5	+363.2 ± 47.43	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2770155775 \ -pgnout ncm-dbt-20260824-1624-014.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483750	ncm-dbt-02	590481	500	230 34 236	+143.89 ± 12.51	0 4 51 190 5	+349.43 ± 48.52	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 123365722 \ -pgnout ncm-dbt-20260824-1624-013.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483749	ncm-dbt-05	600868	500	224 28 248	+143.89 ± 11.65	0 1 56 189 4	+352.8 ± 46.04	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2138126289 \ -pgnout ncm-dbt-20260824-1624-012.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483748	ncm-dbt-04	568037	500	230 34 236	+143.89 ± 12.51	0 1 60 181 8	+339.63 ± 44.35	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2957584750 \ -pgnout ncm-dbt-20260824-1624-011.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483747	ncm-dbt-03	575802	500	228 41 231	+136.56 ± 11.97	0 1 65 180 4	+324.17 ± 42.47	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3445934106 \ -pgnout ncm-dbt-20260824-1624-010.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483746	ncm-dbt-01	582736	500	226 36 238	+138.99 ± 11.66	0 1 61 185 3	+336.46 ± 43.96	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3743657335 \ -pgnout ncm-dbt-20260824-1624-009.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483745	ncm-dbt-02	591900	500	234 37 229	+144.71 ± 12.05	0 2 54 189 5	+352.8 ± 47.05	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 417510797 \ -pgnout ncm-dbt-20260824-1624-008.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483744	ncm-dbt-04	567403	500	222 39 239	+133.34 ± 12.69	0 3 66 176 5	+309.64 ± 42.33	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1333543315 \ -pgnout ncm-dbt-20260824-1624-007.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483743	ncm-dbt-05	600159	500	223 45 232	+129.35 ± 12.21	0 2 71 174 3	+301.33 ± 40.6	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1434415529 \ -pgnout ncm-dbt-20260824-1624-006.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483742	ncm-dbt-03	579248	500	232 41 227	+139.81 ± 12.26	0 4 54 189 3	+339.63 ± 47.1	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4243097155 \ -pgnout ncm-dbt-20260824-1624-005.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483741	ncm-dbt-04	566099	500	220 43 237	+128.55 ± 12.63	0 2 74 169 5	+293.29 ± 39.69	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 574238147 \ -pgnout ncm-dbt-20260824-1624-004.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483740	ncm-dbt-01	588047	500	228 38 234	+138.99 ± 12.9	0 3 61 179 7	+324.17 ± 44.15	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 256518256 \ -pgnout ncm-dbt-20260824-1624-003.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483739	ncm-dbt-02	590868	500	226 40 234	+135.76 ± 12.62	0 1 69 173 7	+312.48 ± 41.11	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1592655323 \ -pgnout ncm-dbt-20260824-1624-002.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
483738	ncm-dbt-05	602159	500	235 36 229	+146.36 ± 12.18	0 1 56 186 7	+352.8 ± 46.04	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2223721246 \ -pgnout ncm-dbt-20260824-1624-001.pgn \ -openings \ file=UHO_4060_v2.epd \ format=epd \ order=random \ -repeat \ -resign \ movecount=3 \ score=600 \ -draw \ movenumber=34 \ movecount=8 \ score=5 \ -each \ tc=30+0.3 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=8 \ -engine \ name=20260824-1624 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:3512dea68483f9daf3b014361c7ea36a44adb338 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15

Commit

Commit ID	3512dea68483f9daf3b014361c7ea36a44adb338
Author	Joost VandeVondele
Date	2026-08-24 16:24:30 UTC
Native thread fixes pthread_create's return value was ignored, so a failed spawn left the engine hanging forever waiting for a searching flag no thread would clear. Report the error and exit. Avoid using std::thread. Intends to consolidate #7060 and #7065 by making `NativeThread` more customizable. closes https://github.com/official-stockfish/Stockfish/pull/7072 No functional change Co-authored-by: Timothy Herchen <timothy.herchen@gmail.com> Co-authored-by: ppigazzini <pasquale.pigazzini@gmail.com>