Dev Builds » 20191104-2301

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 08:29:02 1974321 3329 2015 70 1244 +232.4 +/- 9.57
ncm-et-4 08:28:58 1974365 3332 2010 67 1255 +231.81 +/- 9.52
ncm-et-9 08:29:08 1971006 3339 2048 55 1236 +239.14 +/- 9.58
ncm-et-10 08:28:58 1960110 3321 1975 60 1286 +228.41 +/- 9.38
ncm-et-13 08:29:08 1973240 3346 2035 64 1247 +234.95 +/- 9.55
ncm-et-15 08:29:08 1974808 3333 1999 64 1270 +230.46 +/- 9.45
20000 12082 380 7538 +232.85 +/- 3.88

Test Detail

ID Host Started (UTC) Duration Base NPS Games Wins Losses Draws Elo CLI PGN
102700 ncm-et-4 2019-11-05 17:09 00:49:45 1974746 332 199 8 125 +227.71 +/- 30.37
102699 ncm-et-10 2019-11-05 17:08 00:49:59 1957105 321 201 4 116 +248.36 +/- 31.39
102698 ncm-et-3 2019-11-05 17:07 00:50:51 1973445 329 209 4 116 +253.65 +/- 31.43
102697 ncm-et-15 2019-11-05 17:07 00:51:38 1970499 333 212 9 112 +246.09 +/- 32.29
102696 ncm-et-9 2019-11-05 17:06 00:52:41 1959850 339 212 3 124 +249.93 +/- 30.24
102695 ncm-et-13 2019-11-05 17:05 00:53:34 1977944 346 217 2 127 +252.68 +/- 29.78
102694 ncm-et-4 2019-11-05 15:51 01:16:44 1976328 500 315 14 171 +241.91 +/- 26.07
102693 ncm-et-15 2019-11-05 15:50 01:15:30 1980359 500 294 10 196 +223.94 +/- 24.09
102692 ncm-et-3 2019-11-05 15:50 01:16:40 1978364 500 294 8 198 +226.0 +/- 23.89
102691 ncm-et-13 2019-11-05 15:49 01:14:32 1962609 500 314 10 176 +245.2 +/- 25.59
102690 ncm-et-10 2019-11-05 15:48 01:18:44 1947796 500 286 11 203 +214.85 +/- 23.64
102689 ncm-et-9 2019-11-05 15:48 01:16:49 1987866 500 295 6 199 +229.12 +/- 23.74
102688 ncm-et-13 2019-11-05 14:33 01:15:02 1972188 500 297 9 194 +228.08 +/- 24.2
102687 ncm-et-15 2019-11-05 14:33 01:16:22 1972031 500 288 8 204 +219.87 +/- 23.48
102686 ncm-et-4 2019-11-05 14:32 01:17:12 1967232 500 308 11 181 +237.58 +/- 25.22
102685 ncm-et-3 2019-11-05 14:32 01:16:29 1974049 500 305 15 180 +230.16 +/- 25.38
102684 ncm-et-10 2019-11-05 14:31 01:15:57 1959711 500 285 8 207 +216.85 +/- 23.28
102683 ncm-et-9 2019-11-05 14:31 01:15:39 1974430 500 311 9 180 +243.0 +/- 25.24
102682 ncm-et-13 2019-11-05 13:16 01:15:36 1977164 500 288 14 198 +213.85 +/- 24.06
102681 ncm-et-3 2019-11-05 13:16 01:14:54 1984937 500 303 12 185 +231.21 +/- 24.94
102680 ncm-et-4 2019-11-05 13:16 01:15:23 1983806 500 293 4 203 +229.12 +/- 23.39
102679 ncm-et-15 2019-11-05 13:16 01:16:17 1972197 500 296 9 195 +227.04 +/- 24.13
102678 ncm-et-10 2019-11-05 13:15 01:15:53 1972104 500 295 5 200 +230.16 +/- 23.63
102677 ncm-et-9 2019-11-05 13:14 01:16:29 1975956 500 306 8 186 +238.66 +/- 24.75
102676 ncm-et-4 2019-11-05 11:59 01:15:48 1984859 500 310 9 181 +241.91 +/- 25.17
102675 ncm-et-15 2019-11-05 11:59 01:15:57 1978413 500 301 9 190 +232.26 +/- 24.49
102674 ncm-et-13 2019-11-05 11:58 01:16:52 1974980 500 303 8 189 +235.45 +/- 24.53
102673 ncm-et-3 2019-11-05 11:58 01:17:26 1965381 500 301 8 191 +233.32 +/- 24.39
102672 ncm-et-10 2019-11-05 11:58 01:15:51 1963378 500 316 5 179 +253.02 +/- 25.18
102671 ncm-et-9 2019-11-05 11:57 01:15:32 1963232 500 311 10 179 +241.91 +/- 25.35
102670 ncm-et-4 2019-11-05 10:42 01:16:21 1979278 500 290 11 199 +218.86 +/- 23.91
102669 ncm-et-10 2019-11-05 10:42 01:14:58 1967076 500 300 17 183 +222.92 +/- 25.18
102668 ncm-et-13 2019-11-05 10:41 01:16:09 1976071 500 305 12 183 +233.32 +/- 25.09
102667 ncm-et-15 2019-11-05 10:40 01:17:12 1973860 500 296 13 191 +222.92 +/- 24.53
102666 ncm-et-9 2019-11-05 10:40 01:16:01 1966465 500 303 9 188 +234.38 +/- 24.64
102665 ncm-et-3 2019-11-05 10:40 01:16:59 1968471 500 305 9 186 +236.51 +/- 24.79
102664 ncm-et-15 2019-11-05 09:23 01:16:12 1976302 500 312 6 182 +247.41 +/- 24.99
102663 ncm-et-3 2019-11-05 09:23 01:15:43 1975604 500 298 14 188 +223.94 +/- 24.76
102662 ncm-et-4 2019-11-05 09:23 01:17:45 1954311 500 295 10 195 +224.97 +/- 24.16
102661 ncm-et-9 2019-11-05 09:23 01:15:57 1969249 500 310 10 180 +240.82 +/- 25.27
102660 ncm-et-10 2019-11-05 09:23 01:17:36 1953604 500 292 10 198 +221.9 +/- 23.95
102659 ncm-et-13 2019-11-05 09:23 01:17:23 1971725 500 311 9 180 +243.0 +/- 25.24

Commit

Commit ID ef38046e734490499e4b6254dbf4fc434bf37fc9
Author MichaelB7
Date 2019-11-04 23:01:49 UTC
Remove shuffle extension It was noted in an earlier patch that all of the positions below needed the Shuffle Detection idea to be solved: 3r4/p3r1pk/PpBb1pRp/1KpPpP1P/2P1P1R1/8/8/8 b - - 32 86 8/8/8/1k6/2p5/p1K5/N2B2r1/8 b - - 59 109 1r4k1/1r1bq3/4p1p1/3pPpPp/pNpN1P1P/P1PnQ3/1PK5/1R3R2 b - - 13 82 5k2/3b4/5p2/p1p1pPp1/PpPpP1Pp/1P1P3P/8/3R1K2 w - - 20 1 But Stockfish has envolved a bit since the Shuffle Detection patch introduction, and this patch proves Stockfish is able to solves these drawn positions without it, even on single core without EGTB. Passed STC LLR: 2.96 (-2.94,2.94) [-3.00,1.00] Total: 14231 W: 3114 L: 2978 D: 8139 http://tests.stockfishchess.org/tests/view/5dbe1a610ebc5925b64f09d9 Passed LTC LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 42781 W: 6917 L: 6831 D: 29033 http://tests.stockfishchess.org/tests/view/5dbe24c20ebc5925b64f0a7a Passed VLTC LLR: 2.95 (-2.94,2.94) [-3.00,1.00] Total: 32556 W: 4573 L: 4469 D: 23514 http://tests.stockfishchess.org/tests/view/5dbec3830ebc5925b64f11aa Closes https://github.com/official-stockfish/Stockfish/pull/2394 Bench: 4362323 ---------------------------- Example of search by Michael Byrne for the FEN position: q1B5/1P1q4/8/8/8/6R1/8/1K1k4 w - - 0 1 This position is win for white and the only moves that wins is Rg1 - all other moves either draw or lose. With single core and 1024M hash, it is solved without shuffle detection in 38 seconds on my machine (with no EGTB). This was the position that was locked in a loop in the initial shuffle detection patch! ``` dep score nodes time (not shown: tbhits knps seldep) 50 +1.71 298.9M 2:43.63 Rg1+ Kd2 Rg2+ Kc3 Rc2+ Kb3 Rb2+ Kc3 Bxd7 Qf8 Ba4 Qb8 Bd1 Kd4 Rb5 Kc4 Be2+ Kc3 Rb6 Kd4 Bf3 Ke5 Kb2 Kf4 Bd1 Qe5+ Kb1 Qe4+ Ka2 Qd5+ Rb3 Qd2+ Ka3 Qc1+ Kb4 Qc7 Ka4 Qb8 Rb6 Ke5 Kb3 Qg8+ Kb4 Qf8+ Ka5 Qb8 Bb3 Kd4 Kb4 Qf8+ Ka4 Qb8 Ka5 K <snip> 49 +1.68 288.5M 2:38.35 Rg1+ Kd2 Rg2+ Kc3 Rc2+ Kb3 Rb2+ Kc3 Bxd7 Qf8 Ba4 Qb8 Bd1 Kd4 Rb5 Kc4 Be2+ Kc3 Rb6 Kd4 Bf3 Ke5 Kb2 Kf4 Bd1 Qe5+ Kb1 Qe4+ Ka2 Qd5+ Rb3 Qd2+ Ka3 Qc1+ Kb4 Qc7 Ka4 Qb8 Rb6 Ke5 Kb3 Qg8+ Kb4 Qf8+ Ka5 Qb8 Bb3 Kd4 Kb4 Ke3 Be6 Ke4 Bc4 Ke <snip> 48 +1.78 228.5M 2:01.93 Rg1+ Kd2 Rg2+ Kc3 Rc2+ Kb3 Rb2+ Kc3 Bxd7 Qf8 Ba4 Qb8 Bd1 Kd4 Rb5 Kc4 Be2+ Kc3 Rb6 Kd4 Bf3 Ke5 Kb2 Kf4 Bd1 Qe5+ Kb1 Qe4+ Ka2 Qd5+ Rb3 Qd2+ Ka3 Qa5+ Kb2 Qe5+ Ka2 Qb8 Rb5 Ke3 Kb1 Ke4 Bb3 Kf4 Be6 Ke3 Rb4 Kd3 Kb2 Ke3 Bd5 Qe5+ Kc2 Qh <snip> 46 +1.49 198.4M 1:44.89 Rg1+ Kd2 Rg2+ Kc3 Rc2+ Kb3 Rb2+ Kc3 Bxd7 Qf8 Ba4 Qb8 Bd1 Kd4 Rb5 Kc4 Be2+ Kc3 Rb6 Kd4 Bf3 Ke5 Kb2 Kf4 Bd1 Qe5+ Kb1 Qe4+ Ka2 Qd5+ Rb3 Qd2+ Ka3 Qc1+ Kb4 Qc7 Ka4 Qb8 Rb6 Qe8+ Rb5 Qb8 Bc2 Qa7+ Kb3 Qe3+ Kc4 Qe6+ Kb4 Qd6+ Kb3 Qb8 Rb4 <snip> 45 +1.45 154.5M 1:20.75 Rg1+ Kd2 Rg2+ Kc3 Rc2+ Kb3 Rb2+ Kc3 Bxd7 Qf8 Ba4 Qb8 Bd1 Kd4 Rb5 Kc4 Be2+ Kc3 Rb6 Kd4 Bf3 Ke3 Bg2 Kd4 Rb5 Kc4 Bf1+ Kd4 Kb2 Qh2+ Kb3 Qg3+ Ka4 Qb8 Be2 Ke3 Bc4 Kf4 Kb4 Qd6+ Kc3 Qb8 Kc2 Ke4 Be6 Qh2+ Kb3 Qg3+ Ka4 Qb8 Bb3 Kd4 Bd5 Ke3 <snip> 44 +1.36 141.9M 1:14.40 Rg1+ Kd2 Rg2+ Kc3 Rc2+ Kb3 Rb2+ Kc3 Bxd7 Qf8 Ba4 Qb8 Bd1 Qd6 Rc2+ Kd3 Be2+ Ke3 Rb2 Qb8 Bd1 Ke4 Rb5 Kd4 Bf3 Kc4 Be2+ Kc3 Rb6 Kd2 Bc4 Kc3 Bd5 Kd4 Bg2 Ke5 Kb2 Kd4 Rb5 Kc4 Bf1+ Kd4 Be2 Ke4 Bc4 Qh2+ Kb3 Qg3+ Ka4 Qb8 Bd5+ Kd4 Be6 Ke4 <snip> 43 +1.36 134.1M 1:10.46 Rg1+ Kd2 Rg2+ Kc3 Rc2+ Kb3 Rb2+ Kc3 Bxd7 Qf8 Ba4 Qb8 Bd1 Qd6 Rc2+ Kd3 Be2+ Ke3 Rb2 Qb8 Bd1 Ke4 Rb5 Kd4 Bf3 Kc4 Be2+ Kc3 Rb6 Kd2 Bc4 Kc3 Be6 Kd4 Rb5 Kc3 Bf7 Kd4 Kb2 Ke4 Kb3 Kf4 Kc3 Ke4 Kb2 Qh2+ Kb3 Qg3+ Ka4 Qb8 Rb4+ Ke5 Rb6 Kf4 <snip> 42 +1.36 118.7M 1:01.60 Rg1+ Kd2 Rg2+ Kc3 Rc2+ Kb3 Rb2+ Kc3 Bxd7 Qf8 Ba4 Qb8 Bd1 Qd6 Rc2+ Kd3 Be2+ Ke3 Rb2 Qb8 Bd1 Ke4 Rb5 Kd4 Bf3 Kc4 Be2+ Kc3 Rb6 Kd2 Bc4 Kc3 Be6 Kd4 Rb5 Kc3 Bf7 Kd4 Kb2 Ke4 Bc4 Qh2+ Kb3 Qg3+ Ka4 Qb8 Bd5+ Kd4 Bb3 Qa7+ Kb4 Qb8 Bc4 Ke4 <snip> 41 +1.38 110.3M 0:56.80 Rg1+ Kd2 Rg2+ Kc3 Rc2+ Kb3 Rb2+ Kc3 Bxd7 Qf8 Ba4 Qb8 Bd1 Qd6 Rc2+ Kd3 Be2+ Ke3 Rb2 Qb8 Bd1 Ke4 Rb5 Kd4 Bf3 Kc4 Be2+ Kc3 Rb6 Kd2 Bc4 Kc3 Be6 Kd4 Rb5 Kc3 Bd5 Kd4 Ba2 Ke4 Be6 Kd4 Kb2 Qh2+ Kb3 Qb8 Bc4 Ke3 Kc3 Qh8+ Kb4 Qb2+ Ka4 Qa1+ <snip> 39 +1.25 87.3M 0:44.48 Rg1+ Kd2 Rg2+ Kc3 Rc2+ Kb3 Rb2+ Kc3 Bxd7 Qf8 Ba4 Qb8 Bd1 Kd4 Rb5 Kc4 Be2+ Kc3 Rb6 Kd4 Bf3 Ke5 Kb2 Kf4 Bd1 Kg5 Kb1 Kf5 Bb3 Ke5 Kb2 Kd4 Rb5 Qh2+ Bc2 Qb8 Bd1 Kc4 Be2+ Kd4 Kc2 Ke3 Bd1 Kd4 Kb3 Qg3+ Ka4 Qb8 Bb3 Kc3 Rb6 Kd4 Kb5 Ke5 K 38 +1.25 82.0M 0:41.90 Rg1+ Kd2 Rg2+ Kc3 Rc2+ Kb3 Rb2+ Kc3 Bxd7 Qf8 Ba4 Qb8 Bd1 Kd4 Rb5 Kc4 Be2+ Kc3 Rb6 Kd4 Bf3 Ke5 Kb2 Kf4 Bd1 Kg5 Kb1 Kf5 Bb3 Ke5 Kb2 Kd4 Rb5 Qh2+ Bc2 Qb8 Kb3 Qg3+ Ka4 Qb8 Bb3 Kc3 Rb6 Kd4 Kb5 Ke5 Kb4 Kd4 Be6 Kd3 Bd5 Kd4 Bf3 Ke5 Be <snip> 37 +0.13 79.3M 0:40.44 Rg1+ Kd2 Rg2+ Kc3 Rc2+ Kb3 Rb2+ Kc3 Bxd7 Qf8 Ba4 Qb8 Bd1 Kc4 Bf3 Kd4 Rb5 Kc4 Rb6 Kd4 Rb2 Ke5 Rb3 Kd6 Rb5 Ke6 Rb4 Kd6 Kc2 Kc5 Kb3 Kd6 Be4 Ke7 Kc3 Qc7+ Kd3 Qg3+ Kc2 Qf2+ Kb3 Qe3+ Ka2 Qa7+ Kb2 Qb8 Kb3 Kd6 Bf3 Qg8+ Ka3 Kc7 b8=R Qx 37 +0.67! 78.3M 0:39.90 Rg1+! 37 +0.47! 77.0M 0:39.18 Rg1+! 37 +0.32! 76.8M 0:39.11 Rg1+! 37 +0.23! 76.8M 0:39.07 Rg1+! 36 +0.57! 76.1M 0:38.72 Rg1+! 36 +0.37! 75.8M 0:38.59 Rg1+! 36 +0.23! 75.7M 0:38.51 Rg1+! 36 +0.13! 75.6M 0:38.49 Rg1+! 35 +0.03? 58.0M 0:29.84 bxa8=Q Qb5+? ```
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