Dev Builds » 20180209-1807

You are viewing an old NCM Stockfish dev build test. You may find the most recent dev build tests using Stockfish 15 as the baseline here.

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 7. This yields an approximate Elo difference and establishes confidence in the strength of the dev builds.

Summary

Host	Duration	Avg Base NPS	Games	Wins	Losses	Draws	Elo
ncm-et-3	13:31:38	2013580	5273	2407	192	2674	+155.57 ± 6.41
ncm-et-4	13:33:08	2014310	5284	2455	192	2637	+159.05 ± 6.47
ncm-et-5	07:08:30	2024454	2794	1308	93	1393	+161.86 ± 8.88
ncm-et-9	04:20:40	1988336	1679	782	68	829	+157.77 ± 11.58
ncm-et-10	04:20:00	1962224	1640	727	62	851	+149.47 ± 11.33
ncm-et-13	04:20:24	1989717	1679	773	52	854	+159.54 ± 11.3
ncm-et-15	04:20:22	1979195	1651	755	66	830	+154.42 ± 11.54
			20000	9207	725	10068	+157.28 ± 3.3

Test Detail

ID	Host	Started (UTC)	Duration	Base NPS	Games	Wins	Losses	Draws	Elo	PGN
53796	ncm-et-10	2018-09-15 04:24	00:22:45	1959085	140	49	6	85	+110.27 ± 34.87	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2122603731 \ -pgnout /tmp/ncm-dbt-20180209-1807-046.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.50+0.25 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53795	ncm-et-15	2018-09-15 04:24	00:23:25	1969810	151	70	4	77	+162.82 ± 37.69	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1969911798 \ -pgnout /tmp/ncm-dbt-20180209-1807-045.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.37+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53794	ncm-et-3	2018-09-15 04:20	00:26:54	1989085	170	76	14	80	+132.83 ± 38.14	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 791896527 \ -pgnout /tmp/ncm-dbt-20180209-1807-044.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.13+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53793	ncm-et-9	2018-09-15 04:19	00:27:49	1986878	179	82	8	89	+152.77 ± 35.55	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3875416692 \ -pgnout /tmp/ncm-dbt-20180209-1807-043.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.16+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53792	ncm-et-13	2018-09-15 04:19	00:28:06	1988928	179	85	4	90	+169.5 ± 34.8	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1049886809 \ -pgnout /tmp/ncm-dbt-20180209-1807-042.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.13+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53791	ncm-et-4	2018-09-15 04:19	00:28:30	1990822	181	88	5	88	+172.15 ± 35.51	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2022769660 \ -pgnout /tmp/ncm-dbt-20180209-1807-041.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.11+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53790	ncm-et-10	2018-09-15 03:05	01:18:22	1984362	500	223	22	255	+148.02 ± 20.85	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3029263139 \ -pgnout /tmp/ncm-dbt-20180209-1807-040.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.19+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53789	ncm-et-15	2018-09-15 03:03	01:19:36	1982792	500	238	19	243	+163.21 ± 21.43	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2830805547 \ -pgnout /tmp/ncm-dbt-20180209-1807-039.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.21+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53788	ncm-et-9	2018-09-15 03:02	01:16:34	1990665	500	236	17	247	+163.21 ± 21.16	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3834844641 \ -pgnout /tmp/ncm-dbt-20180209-1807-038.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.11+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53787	ncm-et-3	2018-09-15 03:01	01:18:40	1988927	500	235	22	243	+158.08 ± 21.5	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3946524227 \ -pgnout /tmp/ncm-dbt-20180209-1807-037.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.13+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53786	ncm-et-4	2018-09-15 03:00	01:17:18	1990191	500	239	17	244	+165.8 ± 21.33	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2992745018 \ -pgnout /tmp/ncm-dbt-20180209-1807-036.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.12+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53785	ncm-et-13	2018-09-15 03:00	01:17:56	1990034	500	237	15	248	+165.8 ± 21.05	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 77365940 \ -pgnout /tmp/ncm-dbt-20180209-1807-035.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.12+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53784	ncm-et-10	2018-09-15 01:47	01:16:58	1976252	500	230	18	252	+157.24 ± 20.92	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1583235062 \ -pgnout /tmp/ncm-dbt-20180209-1807-034.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.29+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53783	ncm-et-9	2018-09-15 01:43	01:17:18	1987666	500	228	23	249	+151.35 ± 21.19	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2557451985 \ -pgnout /tmp/ncm-dbt-20180209-1807-033.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.15+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53782	ncm-et-3	2018-09-15 01:43	01:16:33	1990823	500	227	20	253	+153.02 ± 20.91	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3092705632 \ -pgnout /tmp/ncm-dbt-20180209-1807-032.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.11+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53781	ncm-et-15	2018-09-15 01:43	01:19:29	1984204	500	216	16	268	+147.19 ± 20.02	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2986318194 \ -pgnout /tmp/ncm-dbt-20180209-1807-031.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.19+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53780	ncm-et-13	2018-09-15 01:42	01:16:26	1989243	500	229	15	256	+158.93 ± 20.62	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2839618044 \ -pgnout /tmp/ncm-dbt-20180209-1807-030.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.13+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53779	ncm-et-4	2018-09-15 01:42	01:17:22	1991613	500	230	19	251	+156.39 ± 21.0	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 472405170 \ -pgnout /tmp/ncm-dbt-20180209-1807-029.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.10+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53778	ncm-et-15	2018-09-15 00:24	01:17:52	1979976	500	231	27	242	+150.51 ± 21.64	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1522138034 \ -pgnout /tmp/ncm-dbt-20180209-1807-028.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.24+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53777	ncm-et-10	2018-09-15 00:24	01:21:55	1929197	500	225	16	259	+154.7 ± 20.49	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1811461218 \ -pgnout /tmp/ncm-dbt-20180209-1807-027.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.88+0.25 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53776	ncm-et-13	2018-09-15 00:23	01:17:56	1990664	500	222	18	260	+150.51 ± 20.49	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1932023317 \ -pgnout /tmp/ncm-dbt-20180209-1807-026.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.11+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53775	ncm-et-4	2018-09-15 00:23	01:17:25	1988612	500	252	13	235	+180.8 ± 21.72	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2103081788 \ -pgnout /tmp/ncm-dbt-20180209-1807-025.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.14+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53774	ncm-et-9	2018-09-15 00:23	01:18:59	1988138	500	236	20	244	+160.64 ± 21.4	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2140623931 \ -pgnout /tmp/ncm-dbt-20180209-1807-024.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.14+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53773	ncm-et-3	2018-09-15 00:23	01:18:39	1989716	500	227	26	247	+148.02 ± 21.36	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1274079565 \ -pgnout /tmp/ncm-dbt-20180209-1807-023.pgn \ -openings \ file=/home/chess/www/releases/20180914162857/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=24.12+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1029	ncm-et-4	2018-02-10 04:38	00:16:10	2022957	103	42	2	59	+142.4 ± 41.83	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3360140698 \ -pgnout /tmp/ncm-dbt-20180209-1807-022.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.73+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1028	ncm-et-3	2018-02-10 04:37	00:16:40	2025408	103	44	3	56	+146.39 ± 43.86	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 820043516 \ -pgnout /tmp/ncm-dbt-20180209-1807-021.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.70+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1027	ncm-et-5	2018-02-10 04:08	00:45:50	2024590	294	139	6	149	+169.44 ± 26.91	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1034314584 \ -pgnout /tmp/ncm-dbt-20180209-1807-020.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.71+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1026	ncm-et-4	2018-02-10 03:20	01:16:41	2028686	500	229	17	254	+157.24 ± 20.78	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3667784008 \ -pgnout /tmp/ncm-dbt-20180209-1807-019.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.66+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1025	ncm-et-3	2018-02-10 03:19	01:16:56	2024754	500	229	14	257	+159.78 ± 20.54	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 342508265 \ -pgnout /tmp/ncm-dbt-20180209-1807-018.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.71+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1024	ncm-et-5	2018-02-10 02:51	01:16:10	2025572	500	229	22	249	+153.02 ± 21.17	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 870517070 \ -pgnout /tmp/ncm-dbt-20180209-1807-017.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.70+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1023	ncm-et-3	2018-02-10 02:02	01:16:23	2025572	500	241	14	245	+170.15 ± 21.19	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3021641140 \ -pgnout /tmp/ncm-dbt-20180209-1807-016.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.70+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1022	ncm-et-4	2018-02-10 02:00	01:19:13	2028030	500	210	23	267	+136.56 ± 20.25	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 626021631 \ -pgnout /tmp/ncm-dbt-20180209-1807-015.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.67+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1021	ncm-et-5	2018-02-10 01:33	01:16:34	2024426	500	256	16	228	+181.7 ± 22.21	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2862488261 \ -pgnout /tmp/ncm-dbt-20180209-1807-014.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.71+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1020	ncm-et-3	2018-02-10 00:44	01:16:20	2024754	500	213	19	268	+142.26 ± 20.1	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2264018348 \ -pgnout /tmp/ncm-dbt-20180209-1807-013.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.71+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1019	ncm-et-4	2018-02-10 00:41	01:17:21	2024263	500	234	17	249	+161.49 ± 21.05	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 74938480 \ -pgnout /tmp/ncm-dbt-20180209-1807-012.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.71+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1018	ncm-et-5	2018-02-10 00:16	01:16:10	2024590	500	229	17	254	+157.24 ± 20.78	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 995204283 \ -pgnout /tmp/ncm-dbt-20180209-1807-011.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.71+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1017	ncm-et-3	2018-02-09 23:27	01:16:12	2026718	500	231	19	250	+157.24 ± 21.05	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2604860510 \ -pgnout /tmp/ncm-dbt-20180209-1807-010.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.68+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1016	ncm-et-4	2018-02-09 23:24	01:16:10	2028358	500	221	24	255	+144.72 ± 20.89	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2885539529 \ -pgnout /tmp/ncm-dbt-20180209-1807-009.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.66+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1015	ncm-et-5	2018-02-09 22:58	01:16:36	2024427	500	232	16	252	+160.64 ± 20.86	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 974959063 \ -pgnout /tmp/ncm-dbt-20180209-1807-008.pgn \ -openings \ file=/home/chess/www/releases/20180209222135/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.71+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1014	ncm-et-3	2018-02-09 22:09	01:16:24	2027210	500	218	10	272	+153.86 ± 19.62	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1148773677 \ -pgnout /tmp/ncm-dbt-20180209-1807-007.pgn \ -openings \ file=/home/chess/www/releases/20180209215530/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.68+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1013	ncm-et-4	2018-02-09 22:06	01:16:45	2026064	500	235	20	245	+159.78 ± 21.34	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1114918506 \ -pgnout /tmp/ncm-dbt-20180209-1807-006.pgn \ -openings \ file=/home/chess/www/releases/20180209215530/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.69+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1012	ncm-et-5	2018-02-09 21:40	01:17:10	2023119	500	223	16	261	+153.02 ± 20.39	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3668539729 \ -pgnout /tmp/ncm-dbt-20180209-1807-005.pgn \ -openings \ file=/home/chess/www/releases/20180209213212/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.73+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1011	ncm-et-3	2018-02-09 20:52	01:16:05	2026391	500	239	17	244	+165.8 ± 21.33	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2095898085 \ -pgnout /tmp/ncm-dbt-20180209-1807-004.pgn \ -openings \ file=/home/chess/www/releases/20180209185539/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.69+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1010	ncm-et-4	2018-02-09 20:50	01:15:18	2025245	500	236	17	247	+163.21 ± 21.16	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2717710302 \ -pgnout /tmp/ncm-dbt-20180209-1807-003.pgn \ -openings \ file=/home/chess/www/releases/20180209185539/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.70+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1009	ncm-et-3	2018-02-09 19:35	01:15:52	2023609	500	227	14	259	+158.08 ± 20.43	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 218272473 \ -pgnout /tmp/ncm-dbt-20180209-1807-002.pgn \ -openings \ file=/home/chess/www/releases/20180209185539/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.72+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1008	ncm-et-4	2018-02-09 19:34	01:14:55	2026883	500	239	18	243	+164.93 ± 21.41	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2405727794 \ -pgnout /tmp/ncm-dbt-20180209-1807-001.pgn \ -openings \ file=/home/chess/www/releases/20180209185539/stockfish/books/8moves_v3.pgn \ format=pgn \ order=random \ plies=16 \ -repeat \ -resign \ movecount=3 \ score=400 \ -draw \ movenumber=34 \ movecount=8 \ score=20 \ -each \ tc=23.68+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-1807 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-1807-cb1324312d051269700b74cb59759a12530d0b7a/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish

Commit

Commit ID	cb1324312d051269700b74cb59759a12530d0b7a
Author	Stefano Cardanobile
Date	2018-02-09 18:07:19 UTC
Introduce dynamic contempt Make contempt dependent on the current score of the root position. The idea is that we now use a linear formula like the following to decide on the contempt to use during a search : contempt = x + y * eval where x is the base contempt set by the user in the "Contempt" UCI option, and y * eval is the dynamic part which adapts itself to the estimation of the evaluation of the root position returned by the search. In this patch, we use x = 18 centipawns by default, and the y * eval correction can go from -20 centipawns if the root eval is less than -2.0 pawns, up to +20 centipawns when the root eval is more than 2.0 pawns. To summarize, the new contempt goes from -0.02 to 0.38 pawns, depending if Stockfish is losing or winning, with an average value of 0.18 pawns by default. STC: LLR: 2.95 (-2.94,2.94) [0.00,5.00] Total: 110052 W: 24614 L: 23938 D: 61500 http://tests.stockfishchess.org/tests/view/5a72e6020ebc590f2c86ea20 LTC: LLR: 2.97 (-2.94,2.94) [0.00,5.00] Total: 16470 W: 2896 L: 2705 D: 10869 http://tests.stockfishchess.org/tests/view/5a76c5b90ebc5902971a9830 A second match at LTC was organised against the current master: ELO: 1.45 +-2.9 (95%) LOS: 84.0% Total: 19369 W: 3350 L: 3269 D: 12750 http://tests.stockfishchess.org/tests/view/5a7acf980ebc5902971a9a2e Finally, we checked that there is no apparent problem with multithreading, despite the fact that some threads might have a slightly different contempt level that the main thread. Match of this version against master, both using 5 threads, time control 30+0.3: ELO: 2.18 +-3.2 (95%) LOS: 90.8% Total: 14840 W: 2502 L: 2409 D: 9929 http://tests.stockfishchess.org/tests/view/5a7bf3e80ebc5902971a9aa2 Include suggestions from Marco Costalba, Aram Tumanian, Ronald de Man, etc. Bench: 5207156