Dev Builds » 20260803-1951

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	06:43:14	583785	4014	1822 292 1900	+139.47 ± 4.41	0 17 491 1451 48	+329.02 ± 15.35
ncm-dbt-02	06:43:50	590491	3992	1780 303 1909	+134.95 ± 4.58	0 34 493 1427 42	+314.58 ± 15.36
ncm-dbt-03	06:43:14	576117	4000	1800 323 1877	+134.65 ± 4.45	0 27 504 1434 35	+316.07 ± 15.17
ncm-dbt-04	06:43:06	566797	3994	1802 297 1895	+137.7 ± 4.36	0 22 481 1461 33	+328.02 ± 15.53
ncm-dbt-05	06:44:10	606070	4000	1803 300 1897	+137.27 ± 4.4	0 24 485 1455 36	+325.29 ± 15.47
			20000	9007 1515 9478	+136.81 ± 1.99	0 124 2454 7228 194	+322.52 ± 6.87

Test Detail

ID	Host	Base NPS	Games	WLD	Standard Elo	Ptnml(0-2)	Gamepair Elo	PGN
481950	ncm-dbt-01	584369	14	6 2 6	+102.04 ± 70.73	0 0 3 4 0	+225.59 ± 263.0	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2702230227 \ -pgnout ncm-dbt-20260803-1951-041.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481949	ncm-dbt-04	567205	494	217 45 232	+126.25 ± 13.15	0 4 72 166 5	+285.56 ± 40.45	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2476965701 \ -pgnout ncm-dbt-20260803-1951-040.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481948	ncm-dbt-02	590310	492	217 35 240	+134.92 ± 12.97	0 2 67 170 7	+309.21 ± 41.88	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 42609377 \ -pgnout ncm-dbt-20260803-1951-039.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481947	ncm-dbt-03	574094	500	223 46 231	+128.55 ± 12.24	0 1 75 170 4	+295.94 ± 39.27	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1686090102 \ -pgnout ncm-dbt-20260803-1951-038.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481946	ncm-dbt-05	603859	500	214 33 253	+131.74 ± 12.54	0 3 67 176 4	+306.84 ± 41.99	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1692688765 \ -pgnout ncm-dbt-20260803-1951-037.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481945	ncm-dbt-01	584411	500	220 37 243	+133.34 ± 12.29	0 1 70 174 5	+309.64 ± 40.79	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 634586615 \ -pgnout ncm-dbt-20260803-1951-036.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481944	ncm-dbt-04	568633	500	226 33 241	+141.43 ± 11.32	0 0 60 187 3	+346.11 ± 44.19	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1217107802 \ -pgnout ncm-dbt-20260803-1951-035.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481943	ncm-dbt-02	591211	500	220 44 236	+127.76 ± 13.75	0 6 69 168 7	+285.49 ± 41.44	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3847239061 \ -pgnout ncm-dbt-20260803-1951-034.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481942	ncm-dbt-03	574419	500	220 34 246	+135.75 ± 11.36	0 0 66 182 2	+327.17 ± 41.95	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2062639783 \ -pgnout ncm-dbt-20260803-1951-033.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481941	ncm-dbt-05	604307	500	224 39 237	+134.95 ± 12.84	0 4 62 179 5	+315.35 ± 43.81	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 363931149 \ -pgnout ncm-dbt-20260803-1951-032.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481940	ncm-dbt-01	584832	500	228 37 235	+139.81 ± 11.62	0 2 57 189 2	+342.85 ± 45.71	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3908350917 \ -pgnout ncm-dbt-20260803-1951-031.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481939	ncm-dbt-04	566691	500	224 43 233	+131.74 ± 12.54	0 3 67 176 4	+306.84 ± 41.99	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2340138062 \ -pgnout ncm-dbt-20260803-1951-030.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481938	ncm-dbt-03	579166	500	230 35 235	+143.07 ± 12.34	0 4 51 191 4	+349.43 ± 48.52	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 931945744 \ -pgnout ncm-dbt-20260803-1951-029.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481937	ncm-dbt-02	592763	500	235 26 239	+154.7 ± 11.94	0 2 44 197 7	+389.56 ± 52.48	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 326668219 \ -pgnout ncm-dbt-20260803-1951-028.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481936	ncm-dbt-05	598303	500	227 37 236	+138.99 ± 12.7	0 4 57 184 5	+330.23 ± 45.79	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3334228280 \ -pgnout ncm-dbt-20260803-1951-027.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481935	ncm-dbt-01	586139	500	224 25 251	+146.36 ± 11.52	0 1 53 192 4	+363.2 ± 47.43	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1892933565 \ -pgnout ncm-dbt-20260803-1951-026.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481934	ncm-dbt-04	566572	500	223 32 245	+139.81 ± 11.62	0 3 54 192 1	+346.12 ± 47.1	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1426252056 \ -pgnout ncm-dbt-20260803-1951-025.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481933	ncm-dbt-03	573002	500	227 49 224	+129.35 ± 12.41	0 1 75 169 5	+295.94 ± 39.27	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2614996909 \ -pgnout ncm-dbt-20260803-1951-024.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481932	ncm-dbt-05	603500	500	231 36 233	+143.07 ± 12.12	0 3 53 190 4	+349.43 ± 47.56	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1237651470 \ -pgnout ncm-dbt-20260803-1951-023.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481931	ncm-dbt-02	591340	500	218 35 247	+133.34 ± 12.69	0 6 57 185 2	+318.25 ± 45.73	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1804799021 \ -pgnout ncm-dbt-20260803-1951-022.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481930	ncm-dbt-01	584034	500	233 38 229	+143.07 ± 12.34	0 1 60 182 7	+339.63 ± 44.35	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 957803406 \ -pgnout ncm-dbt-20260803-1951-021.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481929	ncm-dbt-04	564409	500	223 27 250	+143.89 ± 12.09	0 3 52 191 4	+352.8 ± 48.05	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3455820772 \ -pgnout ncm-dbt-20260803-1951-020.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481928	ncm-dbt-03	579001	500	225 33 242	+140.62 ± 12.02	0 3 55 189 3	+342.85 ± 46.64	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1874658011 \ -pgnout ncm-dbt-20260803-1951-019.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481927	ncm-dbt-05	601001	500	223 42 235	+131.74 ± 12.54	0 0 76 167 7	+298.62 ± 38.82	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1427151043 \ -pgnout ncm-dbt-20260803-1951-018.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481926	ncm-dbt-02	588260	500	230 43 227	+136.56 ± 12.98	0 4 61 179 6	+318.25 ± 44.18	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2331129846 \ -pgnout ncm-dbt-20260803-1951-017.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481925	ncm-dbt-01	583740	500	237 36 227	+148.02 ± 12.94	0 2 55 183 10	+349.43 ± 46.59	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2840788309 \ -pgnout ncm-dbt-20260803-1951-016.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481924	ncm-dbt-04	566138	500	226 39 235	+136.56 ± 12.79	0 4 60 181 5	+321.19 ± 44.57	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 740279105 \ -pgnout ncm-dbt-20260803-1951-015.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481923	ncm-dbt-03	573973	500	224 48 228	+127.76 ± 14.27	0 8 66 168 8	+282.94 ± 42.37	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1301317662 \ -pgnout ncm-dbt-20260803-1951-014.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481922	ncm-dbt-05	632026	500	234 37 229	+144.71 ± 11.83	0 3 50 194 3	+359.68 ± 49.05	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1011226603 \ -pgnout ncm-dbt-20260803-1951-013.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481921	ncm-dbt-01	580613	500	211 36 253	+126.97 ± 13.04	0 4 72 169 5	+288.06 ± 40.46	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1388634359 \ -pgnout ncm-dbt-20260803-1951-012.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481920	ncm-dbt-02	589197	500	221 26 253	+143.07 ± 12.34	0 2 57 185 6	+342.85 ± 45.71	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2010572151 \ -pgnout ncm-dbt-20260803-1951-011.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481919	ncm-dbt-04	566375	500	234 35 231	+146.36 ± 12.81	0 2 56 183 9	+346.12 ± 46.15	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 761404653 \ -pgnout ncm-dbt-20260803-1951-010.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481918	ncm-dbt-03	577110	500	226 36 238	+138.99 ± 12.5	0 3 59 183 5	+330.23 ± 44.94	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2973125716 \ -pgnout ncm-dbt-20260803-1951-009.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481917	ncm-dbt-05	599230	500	231 29 240	+148.85 ± 12.27	0 2 51 190 7	+363.2 ± 48.51	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3760529180 \ -pgnout ncm-dbt-20260803-1951-008.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481916	ncm-dbt-02	592461	500	215 41 244	+126.17 ± 13.06	0 7 64 177 2	+293.29 ± 43.07	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 679835494 \ -pgnout ncm-dbt-20260803-1951-007.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481915	ncm-dbt-01	582068	500	233 39 228	+142.25 ± 13.18	0 3 59 179 9	+330.23 ± 44.94	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3163474195 \ -pgnout ncm-dbt-20260803-1951-006.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481914	ncm-dbt-04	568355	500	229 43 228	+135.76 ± 12.01	0 3 60 185 2	+327.18 ± 44.54	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1472070023 \ -pgnout ncm-dbt-20260803-1951-005.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481913	ncm-dbt-03	578177	500	225 42 233	+133.34 ± 13.26	0 7 57 182 4	+312.48 ± 45.66	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3637816369 \ -pgnout ncm-dbt-20260803-1951-004.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481912	ncm-dbt-01	583866	500	230 42 228	+137.37 ± 12.76	0 3 62 179 6	+321.19 ± 43.77	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 616162079 \ -pgnout ncm-dbt-20260803-1951-003.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481911	ncm-dbt-02	588387	500	224 53 223	+123.81 ± 13.28	0 5 74 166 5	+277.93 ± 39.92	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1411525760 \ -pgnout ncm-dbt-20260803-1951-002.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481910	ncm-dbt-05	606336	500	219 47 234	+124.6 ± 12.53	0 5 69 175 1	+290.66 ± 41.43	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1451876271 \ -pgnout ncm-dbt-20260803-1951-001.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=20260803-1951 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15

Commit

Commit ID	1f711d49aa8687b041eeb9d21ed3ac2f6a2bd216
Author	FauziAkram
Date	2026-08-03 19:51:46 UTC
Avoiding Redundant Calculations The expression `to - D` is computed up to four times to determine the source square of the pawn move. Pre-calculating `from` avoids redundant subtraction operations during move generation ~~and cleans up unused attribute specifiers~~. closes https://github.com/official-stockfish/Stockfish/pull/7024 No functional change