Dev Builds » 20260901-1503

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 15. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

Host	Duration	Avg Base NPS	Games	WLD	Standard Elo	Ptnml(0-2)	Gamepair Elo
ncm-dbt-01	06:48:02	583403	4008	1798 278 1932	+138.69 ± 4.33	0 14 496 1454 40	+329.1 ± 15.25
ncm-dbt-02	06:46:49	590688	4000	1841 287 1872	+142.46 ± 4.39	1 19 449 1487 44	+342.45 ± 16.08
ncm-dbt-03	06:47:36	583137	4000	1805 277 1918	+139.81 ± 4.4	0 22 469 1468 41	+332.93 ± 15.73
ncm-dbt-04	06:46:53	566746	4000	1796 316 1888	+134.95 ± 4.48	0 19 529 1405 47	+312.84 ± 14.77
ncm-dbt-05	06:48:28	610103	3992	1817 302 1873	+138.8 ± 4.42	0 19 487 1446 44	+327.92 ± 15.42
			20000	9057 1460 9483	+138.93 ± 1.97	1 93 2430 7260 216	+328.85 ± 6.89

Test Detail

ID	Host	Base NPS	Games	WLD	Standard Elo	Ptnml(0-2)	Gamepair Elo	PGN
484256	ncm-dbt-01	585759	8	3 0 5	+136.8 ± 89.09	0 0 1 3 0	+337.69 ± 541.44	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2336035025 \ -pgnout ncm-dbt-20260901-1503-041.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484255	ncm-dbt-05	603142	492	225 35 232	+141.51 ± 12.1	0 1 59 181 5	+339.66 ± 44.74	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 47945084 \ -pgnout ncm-dbt-20260901-1503-040.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484254	ncm-dbt-03	583028	500	224 29 247	+143.07 ± 11.91	0 1 58 186 5	+346.12 ± 45.18	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2465107673 \ -pgnout ncm-dbt-20260901-1503-039.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484253	ncm-dbt-02	591728	500	233 32 235	+148.02 ± 13.15	0 4 50 187 9	+352.8 ± 49.02	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 756098247 \ -pgnout ncm-dbt-20260901-1503-038.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484252	ncm-dbt-04	567126	500	219 44 237	+126.97 ± 13.22	0 6 67 173 4	+290.66 ± 42.08	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1448434986 \ -pgnout ncm-dbt-20260901-1503-037.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484251	ncm-dbt-01	583489	500	221 33 246	+137.37 ± 12.56	0 3 61 181 5	+324.17 ± 44.15	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1773767161 \ -pgnout ncm-dbt-20260901-1503-036.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484250	ncm-dbt-05	605839	500	232 39 229	+141.44 ± 11.09	0 1 56 192 1	+352.8 ± 46.04	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2771764875 \ -pgnout ncm-dbt-20260901-1503-035.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484249	ncm-dbt-03	583782	500	217 32 251	+134.95 ± 13.03	0 6 57 183 4	+318.25 ± 45.73	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4034791655 \ -pgnout ncm-dbt-20260901-1503-034.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484248	ncm-dbt-02	590353	500	227 35 238	+140.62 ± 11.36	0 1 58 189 2	+346.12 ± 45.18	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2776917888 \ -pgnout ncm-dbt-20260901-1503-033.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484247	ncm-dbt-04	565784	500	232 43 225	+138.18 ± 12.53	0 1 66 176 7	+321.19 ± 42.12	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 715723836 \ -pgnout ncm-dbt-20260901-1503-032.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484246	ncm-dbt-01	583237	500	225 40 235	+134.95 ± 11.4	0 1 64 184 1	+327.18 ± 42.83	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 53062657 \ -pgnout ncm-dbt-20260901-1503-031.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484245	ncm-dbt-05	603993	500	228 29 243	+146.36 ± 11.96	0 1 55 188 6	+356.21 ± 46.49	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3686619144 \ -pgnout ncm-dbt-20260901-1503-030.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484244	ncm-dbt-02	590868	500	236 36 228	+147.19 ± 12.14	0 2 52 190 6	+359.68 ± 48.01	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 4112398842 \ -pgnout ncm-dbt-20260901-1503-029.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484243	ncm-dbt-03	584706	500	222 40 238	+132.54 ± 11.91	0 2 66 180 2	+315.35 ± 42.24	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1892639303 \ -pgnout ncm-dbt-20260901-1503-028.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484242	ncm-dbt-04	566414	500	232 34 234	+145.54 ± 12.64	0 1 59 181 9	+342.85 ± 44.76	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 929532662 \ -pgnout ncm-dbt-20260901-1503-027.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484241	ncm-dbt-01	581361	500	222 33 245	+138.18 ± 12.33	0 4 56 187 3	+333.32 ± 46.21	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1053693036 \ -pgnout ncm-dbt-20260901-1503-026.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484240	ncm-dbt-02	588813	500	233 43 224	+138.99 ± 12.3	0 2 61 182 5	+330.23 ± 44.08	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 916458521 \ -pgnout ncm-dbt-20260901-1503-025.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484239	ncm-dbt-05	601535	500	221 46 233	+126.97 ± 13.04	0 6 66 175 3	+293.29 ± 42.41	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 449005428 \ -pgnout ncm-dbt-20260901-1503-024.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484238	ncm-dbt-03	579909	500	232 38 230	+142.25 ± 13.37	0 5 54 183 8	+333.32 ± 47.06	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3462661518 \ -pgnout ncm-dbt-20260901-1503-023.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484237	ncm-dbt-04	566020	500	227 44 229	+133.34 ± 12.69	0 1 72 170 7	+304.07 ± 40.16	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3344375509 \ -pgnout ncm-dbt-20260901-1503-022.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484236	ncm-dbt-01	581610	500	218 43 239	+126.97 ± 12.47	0 2 75 169 4	+290.66 ± 39.4	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2304981905 \ -pgnout ncm-dbt-20260901-1503-021.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484235	ncm-dbt-05	644247	500	223 40 237	+133.34 ± 13.26	0 4 66 173 7	+304.07 ± 42.38	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3415627516 \ -pgnout ncm-dbt-20260901-1503-020.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484234	ncm-dbt-03	584874	500	232 37 231	+143.07 ± 12.75	0 4 53 187 6	+342.85 ± 47.56	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3254071768 \ -pgnout ncm-dbt-20260901-1503-019.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484233	ncm-dbt-02	590953	500	233 29 238	+150.51 ± 12.4	0 4 44 196 6	+374.11 ± 52.37	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1157922489 \ -pgnout ncm-dbt-20260901-1503-018.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484232	ncm-dbt-04	568077	500	222 37 241	+134.95 ± 13.22	0 3 67 172 8	+306.84 ± 41.99	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2170212823 \ -pgnout ncm-dbt-20260901-1503-017.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484231	ncm-dbt-01	582110	500	224 43 233	+131.74 ± 12.54	0 1 73 170 6	+301.33 ± 39.86	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 35667589 \ -pgnout ncm-dbt-20260901-1503-016.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484230	ncm-dbt-04	568116	500	232 36 232	+143.89 ± 12.09	0 1 58 185 6	+346.12 ± 45.18	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3189663198 \ -pgnout ncm-dbt-20260901-1503-015.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484229	ncm-dbt-03	582444	500	232 38 230	+142.25 ± 12.16	0 0 63 180 7	+336.45 ± 43.03	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1680805502 \ -pgnout ncm-dbt-20260901-1503-014.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484228	ncm-dbt-05	604352	500	230 47 223	+133.34 ± 13.26	0 4 66 173 7	+304.07 ± 42.38	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3551585351 \ -pgnout ncm-dbt-20260901-1503-013.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484227	ncm-dbt-02	588728	500	229 37 234	+140.62 ± 12.23	0 3 56 187 4	+339.63 ± 46.2	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 87047102 \ -pgnout ncm-dbt-20260901-1503-012.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484226	ncm-dbt-01	583908	500	234 30 236	+150.51 ± 11.96	0 1 51 191 7	+370.41 ± 48.42	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1969405864 \ -pgnout ncm-dbt-20260901-1503-011.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484225	ncm-dbt-03	581777	500	221 26 253	+143.07 ± 12.12	0 1 59 184 6	+342.85 ± 44.76	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3348403268 \ -pgnout ncm-dbt-20260901-1503-010.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484224	ncm-dbt-01	584579	500	233 24 243	+154.7 ± 11.94	0 1 47 194 8	+385.59 ± 50.59	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 1517215478 \ -pgnout ncm-dbt-20260901-1503-009.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484223	ncm-dbt-05	603366	500	233 34 233	+146.36 ± 13.02	0 1 60 178 11	+339.63 ± 44.35	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2915078053 \ -pgnout ncm-dbt-20260901-1503-008.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484222	ncm-dbt-04	567284	500	217 46 237	+123.81 ± 12.54	0 4 73 171 2	+285.49 ± 40.16	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 698430084 \ -pgnout ncm-dbt-20260901-1503-007.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484221	ncm-dbt-02	593023	500	229 34 237	+143.07 ± 12.75	0 1 62 178 9	+333.32 ± 43.57	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2489568135 \ -pgnout ncm-dbt-20260901-1503-006.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484220	ncm-dbt-03	584579	500	225 37 238	+137.37 ± 12.15	0 3 59 185 3	+330.23 ± 44.94	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 3988306984 \ -pgnout ncm-dbt-20260901-1503-005.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484219	ncm-dbt-05	614354	500	225 32 243	+141.44 ± 11.77	0 1 59 186 4	+342.85 ± 44.76	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2328731945 \ -pgnout ncm-dbt-20260901-1503-004.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484218	ncm-dbt-01	584579	500	218 32 250	+135.76 ± 12.42	0 1 68 175 6	+315.35 ± 41.44	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 438002738 \ -pgnout ncm-dbt-20260901-1503-003.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484217	ncm-dbt-04	565154	500	215 32 253	+133.34 ± 12.29	0 2 67 177 4	+312.48 ± 41.9	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 570895741 \ -pgnout ncm-dbt-20260901-1503-002.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15
484216	ncm-dbt-02	591039	500	221 41 238	+130.94 ± 12.76	1 2 66 178 3	+309.64 ± 42.33	↓
cutechess-cli \ -rounds 266 \ -games 2 \ -concurrency 16 \ -srand 2443759754 \ -pgnout ncm-dbt-20260901-1503-001.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=20260901-1503 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=dev_build:4d65257b0f8fd8179b81fb88176c4d6eaea94a9c \ -engine \ name=sf15 \ cmd=docker \ arg=run \ arg=-i \ arg=--rm \ arg=--entrypoint=/engine \ arg=stockfish:15

Commit

Commit ID	4d65257b0f8fd8179b81fb88176c4d6eaea94a9c
Author	Joost VandeVondele
Date	2026-09-01 15:03:48 UTC
Avoid reducing move horizon in cyclic time controls Fixes losses on time in cyclic time controls. Results of master vs fix (40/1, 1t, 64MB, UHO_Lichess_4852_v1.epd): Elo: -48.65 +/- 9.84, nElo: -76.63 +/- 15.29 LOS: 0.00 %, DrawRatio: 40.83 %, PairsRatio: 0.48 Games: 1984, Wins: 451, Losses: 727, Draws: 806, Points: 854.0 (43.04 %) Ptnml(0-2): [81, 316, 405, 178, 12], WL/DD Ratio: 1.60 Master timeouts: 557, Fix timeouts: 0 Results of master vs fix (40/10, 1t, 64MB, UHO_Lichess_4852_v1.epd): Elo: -8.10 +/- 3.45, nElo: -15.98 +/- 6.81 LOS: 0.00 %, DrawRatio: 52.00 %, PairsRatio: 0.84 Games: 10000, Wins: 2463, Losses: 2696, Draws: 4841, Points: 4883.5 (48.84 %) Ptnml(0-2): [39, 1268, 2600, 1073, 20], WL/DD Ratio: 1.08 Master timeouts: 116, Fix timeouts: 0 closes https://github.com/official-stockfish/Stockfish/pull/7117 No functional change