Dev Builds » 20260802-1745

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	06:44:35	582693	4000	1822 299 1879	+139.3 ± 4.45	1 23 470 1464 42	+331.0 ± 15.72
ncm-dbt-02	06:43:29	590829	4000	1807 284 1909	+139.3 ± 4.42	1 18 482 1455 44	+330.23 ± 15.5
ncm-dbt-03	06:44:01	576013	3992	1831 297 1864	+140.73 ± 4.44	0 18 476 1452 50	+332.92 ± 15.6
ncm-dbt-04	06:44:35	566163	4014	1795 296 1923	+136.34 ± 4.39	0 23 497 1452 35	+322.26 ± 15.27
ncm-dbt-05	06:45:10	606360	3994	1795 273 1926	+139.43 ± 4.39	0 17 485 1451 44	+330.31 ± 15.44
			20000	9050 1449 9501	+139.02 ± 1.98	2 99 2410 7274 215	+329.31 ± 6.92

Test Detail

ID	Host	Base NPS	Games	WLD	Standard Elo	Ptnml(0-2)	Gamepair Elo	PGN
481747	ncm-dbt-04	566020	14	7 3 4	+102.04 ± 70.73	0 0 3 4 0	+225.59 ± 263.0	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3121042882 \ -pgnout ncm-dbt-20260802-1745-041.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481746	ncm-dbt-03	576128	492	236 33 223	+152.43 ± 11.26	0 0 48 193 5	+386.45 ± 49.84	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 479728897 \ -pgnout ncm-dbt-20260802-1745-040.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481745	ncm-dbt-01	580199	500	234 44 222	+138.99 ± 12.3	0 2 61 182 5	+330.23 ± 44.08	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 917149742 \ -pgnout ncm-dbt-20260802-1745-039.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481744	ncm-dbt-02	589497	500	222 32 246	+138.99 ± 12.9	0 1 67 173 9	+318.25 ± 41.77	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 49833194 \ -pgnout ncm-dbt-20260802-1745-038.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481743	ncm-dbt-05	606879	494	219 31 244	+139.22 ± 12.38	0 3 57 183 4	+334.05 ± 45.76	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2637910058 \ -pgnout ncm-dbt-20260802-1745-037.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481742	ncm-dbt-04	564527	500	227 28 245	+146.36 ± 11.96	0 2 52 191 5	+359.68 ± 48.01	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1293817792 \ -pgnout ncm-dbt-20260802-1745-036.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481741	ncm-dbt-02	590653	500	223 31 246	+140.62 ± 12.02	0 0 64 180 6	+333.32 ± 42.66	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1816140392 \ -pgnout ncm-dbt-20260802-1745-035.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481740	ncm-dbt-01	581485	500	225 35 240	+138.99 ± 12.7	0 3 60 181 6	+327.18 ± 44.54	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2634899374 \ -pgnout ncm-dbt-20260802-1745-034.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481739	ncm-dbt-03	574581	500	231 54 215	+128.55 ± 13.01	0 3 73 168 6	+290.66 ± 40.08	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3970335338 \ -pgnout ncm-dbt-20260802-1745-033.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481738	ncm-dbt-05	603455	500	223 33 244	+138.99 ± 12.3	0 2 61 182 5	+330.23 ± 44.08	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1254920875 \ -pgnout ncm-dbt-20260802-1745-032.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481737	ncm-dbt-04	565430	500	212 39 249	+125.38 ± 12.51	0 1 80 164 5	+282.94 ± 37.88	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3399463971 \ -pgnout ncm-dbt-20260802-1745-031.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481736	ncm-dbt-02	588728	500	218 37 245	+131.74 ± 12.93	0 3 69 172 6	+301.33 ± 41.33	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 183688954 \ -pgnout ncm-dbt-20260802-1745-030.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481735	ncm-dbt-01	583950	500	230 40 230	+138.99 ± 12.09	0 2 60 184 4	+333.32 ± 44.47	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1047116710 \ -pgnout ncm-dbt-20260802-1745-029.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481734	ncm-dbt-03	577274	500	225 36 239	+138.18 ± 11.91	0 1 63 182 4	+330.23 ± 43.2	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1376205277 \ -pgnout ncm-dbt-20260802-1745-028.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481733	ncm-dbt-05	600868	500	232 44 224	+137.37 ± 13.71	0 3 67 169 11	+306.84 ± 41.99	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1632907127 \ -pgnout ncm-dbt-20260802-1745-027.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481732	ncm-dbt-04	567126	500	223 36 241	+136.56 ± 11.97	0 3 59 186 2	+330.23 ± 44.94	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1476998711 \ -pgnout ncm-dbt-20260802-1745-026.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481731	ncm-dbt-01	582360	500	227 35 238	+140.62 ± 13.43	0 5 56 181 8	+327.18 ± 46.19	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4026922835 \ -pgnout ncm-dbt-20260802-1745-025.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481730	ncm-dbt-03	576414	500	227 43 230	+134.15 ± 13.43	0 4 66 172 8	+304.07 ± 42.38	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 743038145 \ -pgnout ncm-dbt-20260802-1745-024.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481729	ncm-dbt-02	593023	500	223 33 244	+138.99 ± 11.88	0 2 59 186 3	+336.46 ± 44.87	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3117814493 \ -pgnout ncm-dbt-20260802-1745-023.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481728	ncm-dbt-05	600691	500	220 32 248	+137.37 ± 11.94	0 1 64 181 4	+327.18 ± 42.83	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2117657123 \ -pgnout ncm-dbt-20260802-1745-022.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481727	ncm-dbt-04	569470	500	221 31 248	+138.99 ± 11.88	0 3 56 189 2	+339.63 ± 46.2	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1102013615 \ -pgnout ncm-dbt-20260802-1745-021.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481726	ncm-dbt-01	580613	500	227 30 243	+144.71 ± 12.47	0 5 47 194 4	+356.21 ± 50.52	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3896844483 \ -pgnout ncm-dbt-20260802-1745-020.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481725	ncm-dbt-03	573973	500	222 37 241	+134.95 ± 12.64	0 3 64 178 5	+315.35 ± 43.03	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2278798008 \ -pgnout ncm-dbt-20260802-1745-019.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481724	ncm-dbt-02	593586	500	230 35 235	+143.07 ± 12.54	0 5 49 192 4	+349.43 ± 49.46	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3300859601 \ -pgnout ncm-dbt-20260802-1745-018.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481723	ncm-dbt-05	633553	500	231 32 237	+146.36 ± 11.29	0 1 52 194 3	+366.78 ± 47.92	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4250866671 \ -pgnout ncm-dbt-20260802-1745-017.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481722	ncm-dbt-04	567720	500	223 38 239	+134.95 ± 13.03	0 4 63 177 6	+312.48 ± 43.44	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1969899314 \ -pgnout ncm-dbt-20260802-1745-016.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481721	ncm-dbt-02	591168	500	227 43 230	+134.15 ± 12.86	1 2 63 180 4	+318.25 ± 43.39	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3186676908 \ -pgnout ncm-dbt-20260802-1745-015.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481720	ncm-dbt-01	583908	500	224 49 227	+126.97 ± 13.41	1 2 74 167 6	+288.06 ± 39.79	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2818164424 \ -pgnout ncm-dbt-20260802-1745-014.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481719	ncm-dbt-03	576823	500	229 34 237	+143.07 ± 12.54	0 1 61 180 8	+336.46 ± 43.96	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4005190598 \ -pgnout ncm-dbt-20260802-1745-013.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481718	ncm-dbt-05	604083	500	224 34 242	+138.99 ± 12.7	0 1 66 175 8	+321.19 ± 42.12	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1419437225 \ -pgnout ncm-dbt-20260802-1745-012.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481717	ncm-dbt-04	561990	500	230 37 233	+141.44 ± 13.21	0 4 57 181 8	+330.23 ± 45.79	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1057887234 \ -pgnout ncm-dbt-20260802-1745-011.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481716	ncm-dbt-02	591297	500	225 38 237	+136.56 ± 12.59	0 3 62 180 5	+321.19 ± 43.77	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1201865936 \ -pgnout ncm-dbt-20260802-1745-010.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481715	ncm-dbt-03	576946	500	227 26 247	+148.02 ± 12.74	0 3 51 188 8	+356.21 ± 48.54	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3333446341 \ -pgnout ncm-dbt-20260802-1745-009.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481714	ncm-dbt-01	583572	500	232 37 231	+143.07 ± 12.34	0 1 60 182 7	+339.63 ± 44.35	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4068506147 \ -pgnout ncm-dbt-20260802-1745-008.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481713	ncm-dbt-05	596504	500	233 36 231	+144.71 ± 12.68	0 3 54 186 7	+346.12 ± 47.1	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 800245092 \ -pgnout ncm-dbt-20260802-1745-007.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481712	ncm-dbt-04	565548	500	226 47 227	+130.14 ± 12.19	0 3 67 178 2	+306.84 ± 41.99	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3928843737 \ -pgnout ncm-dbt-20260802-1745-006.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481711	ncm-dbt-02	588686	500	239 35 226	+150.51 ± 12.18	0 2 49 192 7	+370.41 ± 49.56	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2231380314 \ -pgnout ncm-dbt-20260802-1745-005.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481710	ncm-dbt-03	575965	500	234 34 232	+147.19 ± 12.36	0 3 50 191 6	+359.68 ± 49.05	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2218402811 \ -pgnout ncm-dbt-20260802-1745-004.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481709	ncm-dbt-01	585464	500	223 29 248	+142.25 ± 11.73	0 3 52 193 2	+352.8 ± 48.05	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1755022224 \ -pgnout ncm-dbt-20260802-1745-003.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481708	ncm-dbt-05	604847	500	213 31 256	+132.54 ± 12.12	0 3 64 181 2	+315.35 ± 43.03	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3758690074 \ -pgnout ncm-dbt-20260802-1745-002.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
481707	ncm-dbt-04	567640	500	226 37 237	+138.18 ± 12.53	0 3 60 182 5	+327.18 ± 44.54	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1359587009 \ -pgnout ncm-dbt-20260802-1745-001.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=20260802-1745 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:b0ee144057cae0a6934b68de4f9bf81290863594 \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15

Commit

Commit ID	b0ee144057cae0a6934b68de4f9bf81290863594
Author	Carlos Esparza
Date	2026-08-02 17:45:30 UTC
Extract loops for adding/subtracting features into functions passed STC: https://tests.stockfishchess.org/tests/view/6a662c7dc054e285ae028d31 LLR: 2.93 (-2.94,2.94) <-1.75,0.25> Total: 89440 W: 23133 L: 22983 D: 43324 Ptnml(0-2): 210, 9236, 25655, 9432, 187 It uses always_inline and templates the sign to try to make sure that compilers won't emit calls or branches. It should generate almost identical code, but for some reason it is much faster on my computer. ``` Result of 60 runs (counting nodes/1B cycles) ============================================= base (...tockfish.23cf5d) = 263302 +/- 5280 test (...tockfish.daacee) = 266324 +/- 5492 speedup % = +1.13 +/- 0.10 [95% CI; t-test] likelihood(speedup > 0) = 1.0000 likelyhood(speedup > .5%) = 1.0000 CPU: 16 x Intel(R) Core(TM) Ultra 9 185H ``` Fishtest results (see also [[1]](https://tests.stockfishchess.org/tests/view/6a63f21ac054e285ae0288a2), [[2]](https://tests.stockfishchess.org/tests/view/6a6497e8c054e285ae028aac), [[3]](https://tests.stockfishchess.org/tests/view/6a64e0dfc054e285ae028b3e)) seem to suggest that this might be a sizable speedup on many machines, but also a sizable slowdown on some. closes https://github.com/official-stockfish/Stockfish/pull/7013 No functional change