Dev Builds » 20220207-1630

Use this dev build

NCM plays each Stockfish dev build 20,000 times against Stockfish 14. 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 10:03:19 1142420 3338 1232 495 1611 +77.99 +/- 5.86 1 131 701 802 34 +156.31 +/- 12.87
ncm-dbt-02 09:58:48 1190856 3320 1251 509 1560 +78.98 +/- 6.06 2 136 687 788 47 +155.49 +/- 13.0
ncm-dbt-03 10:04:21 1149544 3346 1187 506 1653 +71.71 +/- 5.85 4 139 728 776 26 +144.68 +/- 12.62
ncm-dbt-04 10:08:20 1202801 3362 1197 494 1671 +73.74 +/- 5.99 1 155 702 786 37 +145.86 +/- 12.86
ncm-dbt-05 09:59:22 1140493 3314 1206 470 1638 +78.47 +/- 5.69 2 110 721 798 26 +159.65 +/- 12.66
ncm-dbt-06 10:04:45 1151387 3320 1186 478 1656 +75.25 +/- 5.82 2 128 720 780 30 +151.2 +/- 12.69
20000 7259 2952 9789 +76.01 +/- 2.4 12 799 4259 4730 200 +152.14 +/- 5.22

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
205197 ncm-dbt-05 603281 454 163 66 225 +75.39 +/- 16.61 0 21 95 104 7 +145.74 +/- 35.11
205196 ncm-dbt-06 631892 454 162 61 231 +78.61 +/- 15.64 0 18 93 113 3 +160.52 +/- 35.5
205195 ncm-dbt-01 833689 460 170 65 225 +80.73 +/- 15.87 0 18 94 113 5 +161.83 +/- 35.31
205194 ncm-dbt-02 849601 458 171 61 226 +85.11 +/- 17.53 1 20 86 112 10 +164.52 +/- 36.85
205193 ncm-dbt-03 628164 470 166 69 235 +72.75 +/- 16.52 0 23 100 104 8 +138.48 +/- 34.2
205192 ncm-dbt-04 742395 476 177 65 234 +83.31 +/- 14.79 0 13 105 115 5 +168.22 +/- 33.2
205191 ncm-dbt-05 763116 8 2 3 3 -43.64 +/- 153.21 0 2 1 1 0 -88.74 +/- 710.5
205190 ncm-dbt-06 837412 10 4 1 5 +107.43 +/- 84.35 0 0 2 3 0 +240.65 +/- 570.11
205189 ncm-dbt-03 802880 2 1 1 0 0.0 +/- 34.02 0 0 1 0 0 0.0 +/- 30.47
205188 ncm-dbt-05 1240497 184 59 24 101 +66.91 +/- 24.84 1 7 40 44 0 +143.61 +/- 54.46
205187 ncm-dbt-06 1221314 190 67 26 97 +76.17 +/- 25.35 0 11 32 52 0 +160.46 +/- 60.22
205186 ncm-dbt-02 1190645 194 73 33 88 +72.67 +/- 26.88 0 11 39 43 4 +135.41 +/- 55.04
205185 ncm-dbt-04 1208762 220 78 32 110 +73.73 +/- 20.7 0 7 50 53 0 +154.78 +/- 48.37
205184 ncm-dbt-01 1137080 208 69 40 99 +48.75 +/- 26.11 0 18 41 43 2 +92.31 +/- 53.03
205183 ncm-dbt-03 1225666 212 78 22 112 +94.0 +/- 22.53 0 5 43 55 3 +190.85 +/- 52.44
205182 ncm-dbt-05 1235355 500 184 61 255 +87.26 +/- 13.95 0 12 106 129 3 +181.7 +/- 33.07
205181 ncm-dbt-06 1220212 500 188 68 244 +85.04 +/- 15.2 1 14 106 122 7 +171.02 +/- 33.15
205180 ncm-dbt-02 1198429 500 184 74 242 +77.7 +/- 15.4 0 22 101 122 5 +155.54 +/- 34.04
205179 ncm-dbt-04 1245359 500 174 75 251 +69.71 +/- 15.66 0 28 98 121 3 +140.62 +/- 34.44
205178 ncm-dbt-01 1139468 500 196 80 224 +82.1 +/- 14.84 0 12 120 108 10 +157.24 +/- 30.75
205177 ncm-dbt-03 1239560 500 168 72 260 +67.54 +/- 14.23 0 20 115 114 1 +138.99 +/- 31.79
205176 ncm-dbt-05 1229840 500 180 69 251 +78.43 +/- 15.42 0 21 103 120 6 +155.54 +/- 33.71
205175 ncm-dbt-02 1195905 500 189 74 237 +81.36 +/- 13.81 0 13 111 124 2 +169.27 +/- 32.25
205174 ncm-dbt-06 1229434 500 184 67 249 +82.83 +/- 13.85 0 13 109 126 2 +172.78 +/- 32.58
205173 ncm-dbt-04 1209208 500 176 66 258 +77.71 +/- 15.13 1 16 111 116 6 +155.54 +/- 32.36
205172 ncm-dbt-01 1153038 500 193 67 240 +89.48 +/- 15.02 0 15 101 127 7 +179.9 +/- 34.03
205171 ncm-dbt-03 1232145 500 173 82 245 +63.95 +/- 15.04 1 21 118 106 4 +127.76 +/- 31.37
205170 ncm-dbt-05 1242893 500 180 69 251 +78.43 +/- 13.58 0 13 114 122 1 +164.07 +/- 31.75
205169 ncm-dbt-02 1196984 500 190 82 228 +76.25 +/- 14.67 0 17 113 115 5 +152.18 +/- 32.04
205168 ncm-dbt-06 1237503 500 172 75 253 +68.27 +/- 15.6 0 24 112 107 7 +130.94 +/- 32.29
205167 ncm-dbt-04 1246223 500 185 78 237 +75.52 +/- 16.73 0 31 88 124 7 +147.19 +/- 36.01
205166 ncm-dbt-01 1117990 500 183 78 239 +74.06 +/- 15.01 0 22 104 121 3 +150.51 +/- 33.54
205165 ncm-dbt-03 1246178 500 171 87 242 +58.93 +/- 14.96 1 26 111 112 0 +123.02 +/- 32.44
205164 ncm-dbt-05 1218082 500 188 76 236 +79.17 +/- 14.05 0 14 113 120 3 +162.35 +/- 31.95
205163 ncm-dbt-04 1215093 500 176 73 251 +72.61 +/- 15.63 0 23 108 112 7 +140.62 +/- 32.9
205162 ncm-dbt-06 1250955 500 175 71 254 +73.33 +/- 14.85 0 18 116 110 6 +143.89 +/- 31.59
205161 ncm-dbt-02 1195015 500 188 87 225 +71.16 +/- 15.58 1 21 110 112 6 +140.62 +/- 32.58
205160 ncm-dbt-01 1135169 500 191 61 248 +92.45 +/- 15.22 0 18 89 138 5 +190.85 +/- 36.27
205159 ncm-dbt-03 1228786 500 179 82 239 +68.27 +/- 15.34 0 26 104 117 3 +137.37 +/- 33.52
205158 ncm-dbt-05 1229035 500 184 74 242 +77.71 +/- 14.86 1 16 109 120 4 +158.93 +/- 32.69
205157 ncm-dbt-06 1224600 500 177 87 236 +63.23 +/- 15.91 1 27 108 109 5 +124.6 +/- 32.89
205156 ncm-dbt-02 1192387 500 192 75 233 +82.83 +/- 16.46 0 22 101 115 12 +155.54 +/- 34.04
205155 ncm-dbt-03 1237013 500 189 70 241 +84.31 +/- 14.9 2 11 108 124 5 +174.55 +/- 32.75
205154 ncm-dbt-01 1132942 500 165 81 254 +58.93 +/- 14.56 1 22 120 106 1 +121.46 +/- 31.09
205153 ncm-dbt-04 1261498 500 175 80 245 +66.82 +/- 16.05 0 28 106 109 7 +127.76 +/- 33.19
177517 ncm-dbt-03 1505510 162 62 21 79 +89.88 +/- 27.85 0 7 28 44 2 +182.37 +/- 65.31
177516 ncm-dbt-06 1509166 166 57 22 87 +74.37 +/- 22.03 0 3 42 38 0 +156.26 +/- 51.7
177515 ncm-dbt-04 1493875 166 56 25 85 +65.65 +/- 27.42 0 9 36 36 2 +126.73 +/- 57.45
177514 ncm-dbt-02 1507883 168 64 23 81 +86.53 +/- 29.63 0 10 26 45 3 +169.44 +/- 66.4
177513 ncm-dbt-05 1502341 168 66 28 74 +79.96 +/- 24.52 0 4 40 38 2 +159.18 +/- 53.74
177512 ncm-dbt-01 1489989 170 65 23 82 +87.64 +/- 25.38 0 6 32 46 1 +182.77 +/- 61.24

Commit

Commit ID 08ac4e9db5d763edb788f3b01ea5c3bac494defa
Author Michael Chaly
Date 2022-02-07 16:30:35 UTC
Do less depth reduction in null move pruning for complex positions This patch makes us reduce less depth in null move pruning if complexity is high enough. Thus, null move pruning now depends in two distinct ways on complexity, while being the only search heuristic that exploits complexity so far. passed STC https://tests.stockfishchess.org/tests/view/61fde60fd508ec6a1c9f7754 LLR: 2.94 (-2.94,2.94) <0.00,2.50> Total: 170000 W: 45555 L: 45027 D: 79418 Ptnml(0-2): 760, 19352, 44359, 19658, 871 passed LTC https://tests.stockfishchess.org/tests/view/61fe91febf46cb834cbd5c90 LLR: 2.96 (-2.94,2.94) <0.50,3.00> Total: 145272 W: 39182 L: 38651 D: 67439 Ptnml(0-2): 127, 14864, 42157, 15327, 161 closes https://github.com/official-stockfish/Stockfish/pull/3923 bench 4461945
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