Dev Builds » 20140127-0718

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 05:25:30 584270 4032 2 3509 521 -462.86 ± 13.76 1493 521 2 0 0 -1199.83 ± 14.71
ncm-dbt-02 05:25:59 591482 3978 4 3448 526 -457.19 ± 13.67 1459 526 4 0 0 -1198.78 ± 59.9
ncm-dbt-03 05:25:46 577230 3990 3 3444 543 -452.59 ± 13.41 1449 543 3 0 0 -1199.83 ± 41.05
ncm-dbt-04 05:25:46 568206 4000 5 3463 532 -455.45 ± 13.59 1463 532 5 0 0 -1160.95 ± 74.15
ncm-dbt-05 05:22:55 602818 4000 4 3508 488 -471.92 ± 14.31 1508 488 4 0 0 -1199.74 ± 59.42
20000 18 17372 2610 -459.9 ± 6.14 7372 2610 18 0 0 -1199.83 ± 23.85

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
480078 ncm-dbt-01 585000 32 0 26 6 -393.86 ± 141.24 10 6 0 0 0 -1199.83 ± 129.46
480077 ncm-dbt-02 593239 478 0 415 63 -460.58 ± 39.98 176 63 0 0 0 -1199.83 ± 0.0
480076 ncm-dbt-04 571270 500 1 429 70 -444.07 ± 37.66 179 70 1 0 0 -1078.89 ± 154.95
480075 ncm-dbt-03 580323 490 0 409 81 -418.09 ± 34.08 164 81 0 0 0 -1199.83 ± 0.0
480074 ncm-dbt-05 602070 500 0 431 69 -452.02 ± 37.95 181 69 0 0 0 -1199.83 ± 0.0
480073 ncm-dbt-01 582945 500 0 444 56 -490.69 ± 43.2 194 56 0 0 0 -1199.83 ± 0.0
480072 ncm-dbt-02 591642 500 0 439 61 -474.91 ± 40.99 189 61 0 0 0 -1199.83 ± 0.0
480071 ncm-dbt-04 567126 500 0 428 72 -444.07 ± 36.93 178 72 0 0 0 -1199.83 ± 0.0
480070 ncm-dbt-03 572921 500 0 436 64 -466.01 ± 39.79 186 64 0 0 0 -1199.83 ± 0.0
480069 ncm-dbt-05 611167 500 1 441 58 -477.97 ± 42.34 191 58 1 0 0 -1078.89 ± 154.95
480068 ncm-dbt-01 584537 500 0 432 68 -454.74 ± 38.3 182 68 0 0 0 -1199.83 ± 0.0
480067 ncm-dbt-02 590053 500 1 425 74 -433.93 ± 36.34 175 74 1 0 0 -1078.89 ± 154.95
480066 ncm-dbt-04 565351 500 0 421 79 -426.63 ± 34.76 171 79 0 0 0 -1199.83 ± 0.0
480065 ncm-dbt-05 602337 500 0 436 64 -466.01 ± 39.79 186 64 0 0 0 -1199.83 ± 0.0
480064 ncm-dbt-03 576864 500 0 439 61 -474.91 ± 40.99 189 61 0 0 0 -1199.83 ± 0.0
480063 ncm-dbt-01 584369 500 0 438 62 -471.9 ± 40.58 188 62 0 0 0 -1199.83 ± 0.0
480062 ncm-dbt-04 566809 500 2 430 68 -444.07 ± 38.38 180 68 2 0 0 -958.31 ± 196.57
480061 ncm-dbt-05 594367 500 1 448 51 -500.81 ± 45.76 198 51 1 0 0 -1078.89 ± 154.95
480060 ncm-dbt-02 591685 500 0 435 65 -463.14 ± 39.4 185 65 0 0 0 -1199.83 ± 0.0
480059 ncm-dbt-03 580240 500 0 434 66 -460.3 ± 39.03 184 66 0 0 0 -1199.83 ± 0.0
480058 ncm-dbt-01 583447 500 0 430 70 -449.33 ± 37.6 180 70 0 0 0 -1199.83 ± 0.0
480057 ncm-dbt-04 567918 500 1 439 60 -471.91 ± 41.47 189 60 1 0 0 -1078.89 ± 154.95
480056 ncm-dbt-05 606562 500 0 428 72 -444.07 ± 36.93 178 72 0 0 0 -1199.83 ± 0.0
480055 ncm-dbt-02 592072 500 1 435 64 -460.3 ± 39.85 185 64 1 0 0 -1078.89 ± 154.95
480054 ncm-dbt-03 578177 500 0 429 71 -446.68 ± 37.26 179 71 0 0 0 -1199.83 ± 0.0
480053 ncm-dbt-01 585590 500 0 435 65 -463.14 ± 39.4 185 65 0 0 0 -1199.83 ± 0.0
480052 ncm-dbt-05 602605 500 0 434 66 -460.3 ± 39.03 184 66 0 0 0 -1199.83 ± 0.0
480051 ncm-dbt-04 569390 500 0 437 63 -468.94 ± 40.18 187 63 0 0 0 -1199.83 ± 0.0
480050 ncm-dbt-03 571752 500 1 430 69 -446.69 ± 38.01 180 69 1 0 0 -1078.89 ± 154.95
480049 ncm-dbt-02 589753 500 0 424 76 -433.92 ± 35.66 174 76 0 0 0 -1199.83 ± 0.0
480048 ncm-dbt-01 585379 500 1 436 63 -463.14 ± 40.24 186 63 1 0 0 -1078.89 ± 154.95
480047 ncm-dbt-05 600026 500 0 441 59 -481.07 ± 41.84 191 59 0 0 0 -1199.83 ± 0.0
480046 ncm-dbt-02 590739 500 0 444 56 -490.69 ± 43.2 194 56 0 0 0 -1199.83 ± 0.0
480045 ncm-dbt-03 581028 500 2 428 70 -438.94 ± 37.68 178 70 2 0 0 -958.31 ± 196.57
480044 ncm-dbt-04 568395 500 1 444 55 -487.43 ± 43.73 194 55 1 0 0 -1078.89 ± 154.95
480043 ncm-dbt-01 580987 500 0 440 60 -477.97 ± 41.41 190 60 0 0 0 -1199.83 ± 0.0
480042 ncm-dbt-05 603410 500 2 449 49 -500.81 ± 46.84 199 49 2 0 0 -958.31 ± 196.57
480041 ncm-dbt-03 576537 500 0 439 61 -474.91 ± 40.99 189 61 0 0 0 -1199.83 ± 0.0
480040 ncm-dbt-04 569390 500 0 435 65 -463.14 ± 39.4 185 65 0 0 0 -1199.83 ± 0.0
480039 ncm-dbt-02 592677 500 2 431 67 -446.69 ± 38.74 181 67 2 0 0 -958.31 ± 196.57
480038 ncm-dbt-01 586181 500 1 428 71 -441.49 ± 37.32 178 71 1 0 0 -1078.89 ± 154.95

Commit

Commit ID f434cea287d3fae6b719816df0aa89a3d8579fa9
Author Marco Costalba
Date 2014-01-27 07:18:48 UTC
Fix null reduction formula Depth is already dependent on the actual value of ONE_PLY, in particular can be expressed like: Depth = n * ONE_PLY And because formula is used to calculate R that is also dependent on the value of ONE_PLY and can be expressed like: R = x * ONE_PLY We don't want to divide depth by a 'ply' value but directly by an integer number. Spotted by sf-x No functional change.
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