Dev Builds » 20180209-0941

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	14:10:25	2013454	5507	2518	219	2770	+154.48 +/- 6.31
ncm-et-4	14:11:38	2013634	5498	2529	201	2768	+156.99 +/- 6.3
ncm-et-5	05:57:35	2022925	2346	1048	82	1216	+152.08 +/- 9.46
ncm-et-9	04:22:12	1989165	1684	776	62	846	+157.23 +/- 11.41
ncm-et-10	04:22:19	1962486	1642	768	57	817	+161.07 +/- 11.61
ncm-et-13	04:22:20	1987865	1667	737	66	864	+148.23 +/- 11.26
ncm-et-15	04:22:23	1962679	1656	745	70	841	+150.35 +/- 11.46
			20000	9121	757	10122	+154.79 +/- 3.3

Test Detail

ID	Host	Started (UTC)	Duration	Base NPS	Games	Wins	Losses	Draws	Elo	PGN
53820	ncm-et-10	2018-09-15 08:52	00:22:12	1978879	142	76	2	64	+200.78 +/- 41.7	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 583192797 \ -pgnout /tmp/ncm-dbt-20180209-0941-045.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=24.26+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53819	ncm-et-15	2018-09-15 08:50	00:24:24	1943941	156	65	4	87	+143.49 +/- 34.79	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2627994894 \ -pgnout /tmp/ncm-dbt-20180209-0941-044.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=24.69+0.25 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53818	ncm-et-13	2018-09-15 08:48	00:25:50	1985620	167	59	9	99	+107.31 +/- 32.74	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 811213360 \ -pgnout /tmp/ncm-dbt-20180209-0941-043.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=24.17+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53817	ncm-et-4	2018-09-15 08:47	00:27:22	1988296	175	74	5	96	+144.83 +/- 33.31	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 409394875 \ -pgnout /tmp/ncm-dbt-20180209-0941-042.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=24.14+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53816	ncm-et-9	2018-09-15 08:45	00:28:20	1989402	184	86	9	89	+154.9 +/- 35.74	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1617580908 \ -pgnout /tmp/ncm-dbt-20180209-0941-041.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=24.13+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53815	ncm-et-3	2018-09-15 08:45	00:29:00	1990349	176	78	5	93	+153.34 +/- 34.1	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3419884371 \ -pgnout /tmp/ncm-dbt-20180209-0941-040.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=24.12+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53814	ncm-et-10	2018-09-15 07:31	01:20:10	1951919	500	223	23	254	+147.19 +/- 20.93	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1963567616 \ -pgnout /tmp/ncm-dbt-20180209-0941-039.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=24.59+0.25 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53813	ncm-et-15	2018-09-15 07:29	01:19:08	1984362	500	235	21	244	+158.93 +/- 21.42	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 497177437 \ -pgnout /tmp/ncm-dbt-20180209-0941-038.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=24.19+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53812	ncm-et-13	2018-09-15 07:29	01:17:54	1987826	500	222	20	258	+148.85 +/- 20.65	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1878026882 \ -pgnout /tmp/ncm-dbt-20180209-0941-037.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=24.15+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53811	ncm-et-4	2018-09-15 07:27	01:18:33	1989402	500	215	22	263	+141.44 +/- 20.43	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 4069036079 \ -pgnout /tmp/ncm-dbt-20180209-0941-036.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=24.13+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53810	ncm-et-3	2018-09-15 07:27	01:16:49	1988927	500	224	27	249	+144.72 +/- 21.27	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1924421789 \ -pgnout /tmp/ncm-dbt-20180209-0941-035.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=24.13+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53809	ncm-et-9	2018-09-15 07:26	01:18:33	1990982	500	227	21	252	+152.18 +/- 20.99	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2416043786 \ -pgnout /tmp/ncm-dbt-20180209-0941-034.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=24.11+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53808	ncm-et-15	2018-09-15 06:11	01:17:37	1978885	500	223	21	256	+148.85 +/- 20.78	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1451882808 \ -pgnout /tmp/ncm-dbt-20180209-0941-033.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=24.26+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53807	ncm-et-13	2018-09-15 06:10	01:18:24	1989087	500	244	17	239	+170.15 +/- 21.6	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3081176683 \ -pgnout /tmp/ncm-dbt-20180209-0941-032.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=24.13+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53806	ncm-et-10	2018-09-15 06:08	01:21:17	1936669	500	231	20	249	+156.39 +/- 21.13	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3796938263 \ -pgnout /tmp/ncm-dbt-20180209-0941-031.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=24.78+0.25 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53805	ncm-et-4	2018-09-15 06:08	01:17:56	1989085	500	225	19	256	+152.18 +/- 20.73	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2324952869 \ -pgnout /tmp/ncm-dbt-20180209-0941-030.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-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53804	ncm-et-9	2018-09-15 06:07	01:17:42	1988296	500	242	16	242	+169.27 +/- 21.41	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 101837949 \ -pgnout /tmp/ncm-dbt-20180209-0941-029.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=24.14+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53803	ncm-et-3	2018-09-15 06:07	01:19:15	1990664	500	230	24	246	+152.18 +/- 21.37	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1057439617 \ -pgnout /tmp/ncm-dbt-20180209-0941-028.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=24.11+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53802	ncm-et-9	2018-09-15 04:48	01:17:37	1987981	500	221	16	263	+151.35 +/- 20.28	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 731741650 \ -pgnout /tmp/ncm-dbt-20180209-0941-027.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=24.15+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53801	ncm-et-4	2018-09-15 04:48	01:18:31	1987667	500	232	21	247	+156.39 +/- 21.26	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 4010080939 \ -pgnout /tmp/ncm-dbt-20180209-0941-026.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=24.15+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53800	ncm-et-15	2018-09-15 04:48	01:21:14	1943530	500	222	24	254	+145.54 +/- 20.95	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1094553535 \ -pgnout /tmp/ncm-dbt-20180209-0941-025.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=24.70+0.25 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53799	ncm-et-10	2018-09-15 04:48	01:18:40	1982478	500	238	12	250	+169.27 +/- 20.85	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 4171524879 \ -pgnout /tmp/ncm-dbt-20180209-0941-024.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=24.21+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53798	ncm-et-13	2018-09-15 04:48	01:20:12	1988928	500	212	20	268	+140.62 +/- 20.13	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1640611952 \ -pgnout /tmp/ncm-dbt-20180209-0941-023.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=24.13+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
53797	ncm-et-3	2018-09-15 04:48	01:17:06	1989874	500	212	21	267	+139.81 +/- 20.21	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3688741937 \ -pgnout /tmp/ncm-dbt-20180209-0941-022.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-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1044	ncm-et-4	2018-02-10 10:07	00:49:18	2025736	323	159	12	152	+170.63 +/- 27.22	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 600961419 \ -pgnout /tmp/ncm-dbt-20180209-0941-021.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-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1043	ncm-et-3	2018-02-10 10:06	00:51:06	2023773	331	141	11	179	+144.2 +/- 24.5	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 4031120150 \ -pgnout /tmp/ncm-dbt-20180209-0941-020.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=23.72+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1042	ncm-et-5	2018-02-10 10:03	00:54:05	2020185	346	141	15	190	+132.61 +/- 23.86	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2081339927 \ -pgnout /tmp/ncm-dbt-20180209-0941-019.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=23.76+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1041	ncm-et-4	2018-02-10 08:49	01:17:35	2023446	500	238	12	250	+169.27 +/- 20.85	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1435195152 \ -pgnout /tmp/ncm-dbt-20180209-0941-018.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=23.72+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1040	ncm-et-3	2018-02-10 08:48	01:16:51	2027046	500	229	17	254	+157.24 +/- 20.78	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2873514069 \ -pgnout /tmp/ncm-dbt-20180209-0941-017.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=23.68+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1039	ncm-et-5	2018-02-10 08:46	01:15:17	2024100	500	232	14	254	+162.35 +/- 20.7	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2897820394 \ -pgnout /tmp/ncm-dbt-20180209-0941-016.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=23.71+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1038	ncm-et-4	2018-02-10 07:32	01:16:02	2026719	500	238	23	239	+159.78 +/- 21.74	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 993769851 \ -pgnout /tmp/ncm-dbt-20180209-0941-015.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=23.68+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1037	ncm-et-3	2018-02-10 07:30	01:16:50	2024427	500	247	21	232	+169.27 +/- 22.09	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 1053518255 \ -pgnout /tmp/ncm-dbt-20180209-0941-014.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-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1036	ncm-et-5	2018-02-10 07:29	01:16:12	2024917	500	222	21	257	+148.02 +/- 20.72	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 210461565 \ -pgnout /tmp/ncm-dbt-20180209-0941-013.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=23.70+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1035	ncm-et-3	2018-02-10 06:13	01:15:34	2026882	500	242	15	243	+170.15 +/- 21.33	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 722914328 \ -pgnout /tmp/ncm-dbt-20180209-0941-012.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=23.68+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1034	ncm-et-4	2018-02-10 06:13	01:17:44	2026065	500	210	19	271	+139.81 +/- 19.95	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3201496874 \ -pgnout /tmp/ncm-dbt-20180209-0941-011.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=23.69+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1033	ncm-et-5	2018-02-10 06:12	01:16:14	2022141	500	223	22	255	+148.02 +/- 20.85	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 202989501 \ -pgnout /tmp/ncm-dbt-20180209-0941-010.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=23.74+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1032	ncm-et-3	2018-02-10 04:55	01:17:06	2025900	500	241	20	239	+164.93 +/- 21.68	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3306379759 \ -pgnout /tmp/ncm-dbt-20180209-0941-009.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=23.69+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1031	ncm-et-4	2018-02-10 04:55	01:16:51	2025900	500	236	15	249	+164.93 +/- 21.0	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3974648496 \ -pgnout /tmp/ncm-dbt-20180209-0941-008.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=23.69+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1030	ncm-et-5	2018-02-10 04:55	01:15:47	2023282	500	230	10	260	+164.07 +/- 20.25	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 339800665 \ -pgnout /tmp/ncm-dbt-20180209-0941-007.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=23.72+0.24 \ timemargin=10000 \ proto=uci \ option.Hash=128 \ option.Threads=2 \ -engine \ name=sf-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1007	ncm-et-3	2018-02-09 18:18	01:16:48	2024263	500	212	22	266	+138.99 +/- 20.28	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3475196957 \ -pgnout /tmp/ncm-dbt-20180209-0941-006.pgn \ -openings \ file=/home/chess/www/releases/20180207023002/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-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1006	ncm-et-4	2018-02-09 18:15	01:17:33	2026390	500	240	25	235	+159.78 +/- 21.99	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3084022253 \ -pgnout /tmp/ncm-dbt-20180209-0941-005.pgn \ -openings \ file=/home/chess/www/releases/20180207023002/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-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1005	ncm-et-3	2018-02-09 17:01	01:15:57	2025408	500	215	25	260	+138.99 +/- 20.65	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 2902214401 \ -pgnout /tmp/ncm-dbt-20180209-0941-004.pgn \ -openings \ file=/home/chess/www/releases/20180207023002/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-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1004	ncm-et-4	2018-02-09 16:57	01:16:55	2026554	500	226	16	258	+155.54 +/- 20.54	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 708589060 \ -pgnout /tmp/ncm-dbt-20180209-0941-003.pgn \ -openings \ file=/home/chess/www/releases/20180207023002/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-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1003	ncm-et-3	2018-02-09 15:41	01:18:03	2023937	500	247	11	242	+178.11 +/- 21.26	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 3019292639 \ -pgnout /tmp/ncm-dbt-20180209-0941-002.pgn \ -openings \ file=/home/chess/www/releases/20180207023002/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-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish
1002	ncm-et-4	2018-02-09 15:39	01:17:18	2028358	500	236	12	252	+167.53 +/- 20.74	↓
/home/chess/cutechess/projects/cli/cutechess-cli \ -games 500 \ -concurrency 8 \ -srand 114428283 \ -pgnout /tmp/ncm-dbt-20180209-0941-001.pgn \ -openings \ file=/home/chess/www/releases/20180207023002/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-20180209-0941 \ cmd=/home/chess/devbuilds/bin/x86-64-modern/20180209-0941-d71adc5bd979fd42ff9bbb3d2257e188aac86be9/stockfish \ -engine \ name=sf7 \ cmd=/home/chess/stockfish/7/bin/stockfish

Commit

Commit ID	d71adc5bd979fd42ff9bbb3d2257e188aac86be9
Author	Leonid Pechenik
Date	2018-02-09 09:41:32 UTC
Retire "Extra thinking before accepting draw PVs" This patch simplifies the time management code, removing the extra thinking time for moves with draw PV and increasing thinking time for all moves proportionally by around 4%. Last time when the time management was carefully tuned was 1.5-2 years ago. As new patches were getting added, time management was drifting out of optimum. This happens because when search becomes more precise pv and score are becoming more stable, there are less fail lows, best move is picked earlier and there are less best move changes. All this factors are entering in time management, and average time per move is decreasing with more and more good patches. For individual patches such effect is small (except some) and may be up or down, but when there are many of them, effect is more substantial. The same way benchmark with more and more patches is slowly drifting down on average. So my understanding that back in October adding more think time for draw PV showed positive Elo because time management was not well tuned, there was more time available, and think_hard patch applied this additional time to moves with draw PV, while just retuning back to optimum would recover Elo anyway. It is possible that absence of contempt also helped, as SF9 is showing less 0.0 scores than the October version. Anyway, to me it seems that proper place to deal with draw PV is search, and contempt sounds as much better solution. In time management there is little additional elo, and if some code is not helping like removed here, it is better to discard it. It is simpler to find genuine improvement if code is clean. • Passed STC: LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 20487 W: 4558 L: 4434 D: 11495 http://tests.stockfishchess.org/tests/view/5a7706ec0ebc5902971a9854 • Passed LTC: LLR: 2.96 (-2.94,2.94) [-3.00,1.00] Total: 41960 W: 7145 L: 7058 D: 27757 http://tests.stockfishchess.org/tests/view/5a778c830ebc5902971a9895 • Passed an additional non-regression [-5..0] test at the time control of 60sec for the game (sudden death) with disabled draw adjudication: LLR: 2.95 (-2.94,2.94) [-5.00,0.00] Total: 8438 W: 1675 L: 1586 D: 5177 http://tests.stockfishchess.org/tests/view/5a7c3d8d0ebc5902971a9ac0 • Passed an additional non-regression [-5..0] test at the time control of 1sec+1sec per move with disabled draw adjudication: LLR: 2.97 (-2.94,2.94) [-5.00,0.00] Total: 27664 W: 5575 L: 5574 D: 16515 http://tests.stockfishchess.org/tests/view/5a7c3e820ebc5902971a9ac3 This is a functional change for the time management code. Bench: 4983414