Dev Builds » 20251117-1224

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	06:45:36	580541	4000	1695 409 1896	+115.81 ± 4.7	1 42 659 1266 32	+256.16 ± 13.23
ncm-dbt-02	06:46:03	586527	4000	1713 435 1852	+115.03 ± 4.6	0 46 648 1288 18	+257.59 ± 13.35
ncm-dbt-03	06:44:35	585461	4000	1703 417 1880	+115.81 ± 4.6	1 36 664 1274 25	+258.17 ± 13.16
ncm-dbt-04	06:44:45	566837	4000	1705 398 1897	+117.85 ± 4.6	1 35 647 1290 27	+263.71 ± 13.34
ncm-dbt-05	06:45:22	583869	4000	1694 413 1893	+115.32 ± 4.62	0 43 656 1278 23	+257.02 ± 13.26
			20000	8510 2072 9418	+115.96 ± 2.07	3 202 3274 6396 125	+258.52 ± 5.93

Test Detail

ID	Host	Base NPS	Games	WLD	Standard Elo	Ptnml(0-2)	Gamepair Elo	PGN
441562	ncm-dbt-01	580696	500	196 44 260	+109.07 ± 12.53	0 4 91 154 1	+243.0 ± 35.57	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3136019767 \ -pgnout ncm-dbt-20251117-1224-040.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441561	ncm-dbt-04	566138	500	210 45 245	+119.11 ± 12.99	0 3 84 158 5	+263.42 ± 37.11	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 11940406 \ -pgnout ncm-dbt-20251117-1224-039.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441560	ncm-dbt-05	584495	500	206 57 237	+106.77 ± 13.56	0 9 85 154 2	+234.38 ± 37.19	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1579103441 \ -pgnout ncm-dbt-20251117-1224-038.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441559	ncm-dbt-02	584874	500	204 58 238	+104.49 ± 13.05	0 6 94 148 2	+228.08 ± 35.08	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4223434483 \ -pgnout ncm-dbt-20251117-1224-037.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441558	ncm-dbt-03	582903	500	213 60 227	+109.83 ± 13.4	0 6 89 151 4	+238.66 ± 36.16	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2734593305 \ -pgnout ncm-dbt-20251117-1224-036.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441557	ncm-dbt-04	564997	500	207 44 249	+117.55 ± 12.46	0 2 86 159 3	+263.42 ± 36.51	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1730315495 \ -pgnout ncm-dbt-20251117-1224-035.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441556	ncm-dbt-01	580945	500	214 48 238	+119.89 ± 13.51	0 7 74 165 4	+268.17 ± 39.97	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2891173482 \ -pgnout ncm-dbt-20251117-1224-034.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441555	ncm-dbt-03	585169	500	219 52 229	+120.67 ± 12.97	0 3 82 160 5	+268.17 ± 37.61	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 524458916 \ -pgnout ncm-dbt-20251117-1224-033.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441554	ncm-dbt-05	585843	500	216 34 250	+132.54 ± 12.71	0 4 64 178 4	+309.64 ± 43.08	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4241494071 \ -pgnout ncm-dbt-20251117-1224-032.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441553	ncm-dbt-02	585674	500	216 56 228	+115.22 ± 13.2	0 4 87 154 5	+251.89 ± 36.48	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3380183502 \ -pgnout ncm-dbt-20251117-1224-031.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441552	ncm-dbt-04	565508	500	222 52 226	+123.02 ± 12.17	0 2 78 168 2	+282.94 ± 38.55	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4235044546 \ -pgnout ncm-dbt-20251117-1224-030.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441551	ncm-dbt-03	587494	500	209 48 243	+116.0 ± 13.02	1 3 82 162 2	+263.42 ± 37.69	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3036336908 \ -pgnout ncm-dbt-20251117-1224-029.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441550	ncm-dbt-01	581070	500	201 57 242	+102.97 ± 14.18	0 10 91 144 5	+217.85 ± 35.89	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 32621370 \ -pgnout ncm-dbt-20251117-1224-028.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441549	ncm-dbt-02	585337	500	217 53 230	+118.33 ± 14.2	0 12 65 170 3	+265.78 ± 42.44	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 444924988 \ -pgnout ncm-dbt-20251117-1224-027.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441548	ncm-dbt-05	581402	500	211 47 242	+118.33 ± 13.0	0 4 82 160 4	+263.42 ± 37.69	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3160619681 \ -pgnout ncm-dbt-20251117-1224-026.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441547	ncm-dbt-04	565508	500	206 46 248	+115.22 ± 12.3	0 3 85 161 1	+261.07 ± 36.86	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3530092991 \ -pgnout ncm-dbt-20251117-1224-025.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441546	ncm-dbt-03	584411	500	215 48 237	+120.67 ± 12.78	0 5 75 168 2	+275.45 ± 39.63	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1874106196 \ -pgnout ncm-dbt-20251117-1224-024.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441545	ncm-dbt-01	582694	500	226 55 219	+123.81 ± 12.92	0 3 78 164 5	+277.93 ± 38.66	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 477780318 \ -pgnout ncm-dbt-20251117-1224-023.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441544	ncm-dbt-02	588728	500	214 51 235	+117.55 ± 13.18	0 6 78 163 3	+263.42 ± 38.85	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3697358832 \ -pgnout ncm-dbt-20251117-1224-022.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441543	ncm-dbt-05	578177	500	213 61 226	+109.07 ± 12.53	0 4 91 154 1	+243.0 ± 35.57	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 152090644 \ -pgnout ncm-dbt-20251117-1224-021.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441542	ncm-dbt-04	568554	500	211 52 237	+114.45 ± 12.49	0 5 81 164 0	+261.07 ± 38.02	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3160787736 \ -pgnout ncm-dbt-20251117-1224-020.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441541	ncm-dbt-01	583154	500	206 49 245	+112.91 ± 13.72	1 6 81 159 3	+251.89 ± 38.11	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 900759875 \ -pgnout ncm-dbt-20251117-1224-019.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441540	ncm-dbt-02	586012	500	225 54 221	+123.81 ± 12.16	0 2 77 169 2	+285.49 ± 38.83	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 221367650 \ -pgnout ncm-dbt-20251117-1224-018.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441539	ncm-dbt-03	585801	500	205 35 260	+123.02 ± 13.11	0 7 68 173 2	+282.94 ± 41.76	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4078014737 \ -pgnout ncm-dbt-20251117-1224-017.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441538	ncm-dbt-05	577971	500	214 57 229	+112.91 ± 13.04	0 5 86 156 3	+249.64 ± 36.79	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2360037719 \ -pgnout ncm-dbt-20251117-1224-016.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441537	ncm-dbt-04	568236	500	216 54 230	+116.77 ± 13.54	0 7 78 161 4	+258.75 ± 38.88	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 933643158 \ -pgnout ncm-dbt-20251117-1224-015.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441536	ncm-dbt-01	579785	500	223 57 220	+119.89 ± 12.42	0 1 86 159 4	+268.17 ± 36.37	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1741702726 \ -pgnout ncm-dbt-20251117-1224-014.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441535	ncm-dbt-05	586816	500	207 53 240	+110.6 ± 12.7	0 4 90 154 2	+245.2 ± 35.79	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4191755070 \ -pgnout ncm-dbt-20251117-1224-013.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441534	ncm-dbt-03	586435	500	205 58 237	+105.25 ± 12.17	0 2 100 147 1	+232.26 ± 33.47	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2619944661 \ -pgnout ncm-dbt-20251117-1224-012.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441533	ncm-dbt-02	586393	500	206 52 242	+110.6 ± 12.7	0 4 90 154 2	+245.2 ± 35.79	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1106932350 \ -pgnout ncm-dbt-20251117-1224-011.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441532	ncm-dbt-04	567047	500	220 44 236	+127.76 ± 12.65	0 3 72 171 4	+293.29 ± 40.39	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 539696831 \ -pgnout ncm-dbt-20251117-1224-010.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441531	ncm-dbt-01	578712	500	218 50 232	+121.45 ± 13.49	0 6 75 164 5	+270.57 ± 39.67	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3938374418 \ -pgnout ncm-dbt-20251117-1224-009.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441530	ncm-dbt-03	585717	500	216 57 227	+114.45 ± 13.21	0 6 82 159 3	+254.16 ± 37.82	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1827110892 \ -pgnout ncm-dbt-20251117-1224-008.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441529	ncm-dbt-05	578959	500	212 53 235	+114.45 ± 13.38	0 6 83 157 4	+251.89 ± 37.57	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1713600536 \ -pgnout ncm-dbt-20251117-1224-007.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441528	ncm-dbt-02	587792	500	225 57 218	+121.45 ± 12.58	0 5 73 171 1	+280.42 ± 40.21	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2552901728 \ -pgnout ncm-dbt-20251117-1224-006.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441527	ncm-dbt-04	568713	500	213 61 226	+109.07 ± 15.14	1 10 83 148 8	+230.16 ± 37.67	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 485890945 \ -pgnout ncm-dbt-20251117-1224-005.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441526	ncm-dbt-01	577274	500	211 49 240	+116.77 ± 13.36	0 5 83 157 5	+256.44 ± 37.51	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2039290027 \ -pgnout ncm-dbt-20251117-1224-004.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441525	ncm-dbt-03	585759	500	221 59 220	+116.77 ± 13.36	0 4 86 154 6	+254.16 ± 36.71	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1011754636 \ -pgnout ncm-dbt-20251117-1224-003.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441524	ncm-dbt-05	597292	500	215 51 234	+118.33 ± 13.35	0 7 75 165 3	+265.78 ± 39.69	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4157092634 \ -pgnout ncm-dbt-20251117-1224-002.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
441523	ncm-dbt-02	587409	500	206 54 240	+109.07 ± 12.88	0 7 84 159 0	+245.2 ± 37.37	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 554034637 \ -pgnout ncm-dbt-20251117-1224-001.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=20251117-1224 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b083049fe0c3671d20d195aa8dea72687cd6e44c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15

Commit

Commit ID	b083049fe0c3671d20d195aa8dea72687cd6e44c
Author	Timothy Herchen
Date	2025-11-17 12:24:32 UTC
Use non-locking operations for nodes count and tbHits fetch_add and friends must produce a locking instruction because they guarantee consistency in the presence of multiple writers. Because only one thread ever writes to nodes and tbHits, we may use relaxed load and store to emit regular loads and stores (on both x86-64 and arm64), while avoiding undefined behavior and miscounting nodes. Credit must go to Arseniy Surkov of Reckless (codedeliveryservice) for uncovering this performance gotcha. failed yellow as a gainer on fishtest: LLR: -2.95 (-2.94,2.94) <0.00,2.00> Total: 219616 W: 57165 L: 57105 D: 105346 Ptnml(0-2): 732, 24277, 59720, 24357, 722 https://tests.stockfishchess.org/tests/view/69086abfea4b268f1fac2809 potential small speedup on large core system: ``` ==== master ==== 1 Nodes/second : 294269736 2 Nodes/second : 295217629 Average (over 2): 294743682 ==== patch ==== 1 Nodes/second : 299003603 2 Nodes/second : 298111320 Average (over 2): 298557461 ``` closes https://github.com/official-stockfish/Stockfish/pull/6392 No functional change