Dev Builds » 20221016-1058

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 10:01:05 1231997 3374 1361 386 1627 +103.34 +/- 5.43 1 65 609 982 30 +220.25 +/- 13.79
ncm-dbt-02 09:59:30 1263316 3348 1348 418 1582 +99.11 +/- 5.61 3 81 600 963 27 +210.5 +/- 13.91
ncm-dbt-03 10:01:53 1269368 3372 1338 395 1639 +99.82 +/- 5.58 0 77 628 942 39 +208.04 +/- 13.59
ncm-dbt-04 10:03:25 1260877 3400 1337 407 1656 +97.52 +/- 5.5 1 79 639 951 30 +205.04 +/- 13.47
ncm-dbt-05 09:58:07 1142121 3334 1330 379 1625 +101.93 +/- 5.57 2 68 610 951 36 +214.89 +/- 13.78
ncm-dbt-06 09:25:56 1233381 3172 1205 373 1594 +93.31 +/- 5.58 0 74 627 864 21 +196.15 +/- 13.58
20000 7919 2358 9723 +99.22 +/- 2.26 7 444 3713 5653 183 +209.17 +/- 5.58

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
196339 ncm-dbt-05 1227801 136 55 18 63 +96.96 +/- 24.76 0 2 27 39 0 +211.93 +/- 66.49
196338 ncm-dbt-02 1245073 148 60 18 70 +101.37 +/- 25.66 0 2 30 40 2 +210.17 +/- 62.76
196337 ncm-dbt-03 1231108 170 65 17 88 +100.83 +/- 24.24 0 4 30 50 1 +216.32 +/- 63.49
196336 ncm-dbt-01 1212378 172 72 20 80 +108.42 +/- 22.5 0 2 31 52 1 +237.06 +/- 62.1
196335 ncm-dbt-06 1234075 172 67 13 92 +112.88 +/- 24.15 0 3 28 53 2 +243.36 +/- 65.95
196334 ncm-dbt-04 1226800 202 82 28 92 +95.19 +/- 22.75 0 4 42 52 3 +193.15 +/- 52.89
196333 ncm-dbt-05 1212174 500 204 63 233 +100.71 +/- 14.16 1 8 94 143 4 +215.85 +/- 35.23
196332 ncm-dbt-02 1237492 500 199 71 230 +90.96 +/- 14.76 0 16 94 136 4 +189.0 +/- 35.33
196331 ncm-dbt-01 1197460 500 196 61 243 +96.19 +/- 14.85 1 11 96 136 6 +200.24 +/- 34.91
196330 ncm-dbt-03 1263187 500 196 67 237 +91.71 +/- 14.34 0 13 99 134 4 +190.85 +/- 34.36
196329 ncm-dbt-06 1231024 500 205 66 229 +99.2 +/- 14.15 0 12 90 145 3 +211.87 +/- 36.13
196328 ncm-dbt-04 1223774 500 188 70 242 +83.57 +/- 15.3 0 22 91 134 3 +172.78 +/- 35.79
196327 ncm-dbt-05 1228646 500 208 53 239 +111.37 +/- 15.15 0 11 83 146 10 +230.16 +/- 37.67
196326 ncm-dbt-02 1210635 500 201 66 233 +96.19 +/- 14.56 0 13 94 138 5 +200.24 +/- 35.32
196325 ncm-dbt-01 1187777 500 198 61 241 +97.69 +/- 13.97 0 12 91 145 2 +209.91 +/- 35.92
196324 ncm-dbt-06 1231466 500 182 71 247 +78.43 +/- 14.31 0 17 107 124 2 +162.35 +/- 33.02
196323 ncm-dbt-03 1235292 500 198 54 248 +102.97 +/- 14.02 0 8 96 140 6 +215.85 +/- 34.78
196322 ncm-dbt-04 1231549 500 202 68 230 +95.44 +/- 13.94 0 9 103 133 5 +198.34 +/- 33.48
196321 ncm-dbt-05 1238411 500 195 62 243 +94.69 +/- 14.83 0 14 95 135 6 +194.57 +/- 35.13
196320 ncm-dbt-02 1223531 500 203 58 239 +103.73 +/- 14.19 0 11 87 148 4 +221.9 +/- 36.76
196319 ncm-dbt-01 1194621 500 194 54 252 +99.95 +/- 13.68 0 10 92 146 2 +215.85 +/- 35.68
196318 ncm-dbt-06 1235863 500 185 43 272 +101.46 +/- 13.37 0 8 94 146 2 +219.87 +/- 35.19
196317 ncm-dbt-03 1261027 500 190 64 246 +89.48 +/- 15.02 0 17 95 133 5 +183.51 +/- 35.13
196316 ncm-dbt-04 1220064 500 190 64 246 +89.48 +/- 13.84 0 12 102 134 2 +189.0 +/- 33.78
196315 ncm-dbt-05 1230358 500 198 55 247 +102.22 +/- 13.86 0 9 93 144 4 +217.85 +/- 35.44
196314 ncm-dbt-02 1228245 500 200 60 240 +99.95 +/- 14.0 0 11 91 145 3 +213.85 +/- 35.9
196313 ncm-dbt-01 1217521 500 208 50 242 +113.68 +/- 13.55 0 7 82 157 4 +249.64 +/- 37.86
196312 ncm-dbt-03 1214036 500 203 64 233 +99.2 +/- 15.04 0 12 96 133 9 +200.24 +/- 34.91
196311 ncm-dbt-06 1220989 500 191 61 248 +92.45 +/- 14.35 0 13 98 135 4 +192.71 +/- 34.55
196310 ncm-dbt-04 1249727 500 193 46 261 +105.25 +/- 14.35 0 10 89 145 6 +221.9 +/- 36.31
196309 ncm-dbt-03 1244647 500 203 64 233 +99.2 +/- 14.3 0 10 97 137 6 +206.01 +/- 34.66
196308 ncm-dbt-02 1227307 500 208 55 237 +109.83 +/- 14.68 1 10 79 155 5 +238.66 +/- 38.63
196307 ncm-dbt-05 1252864 500 202 54 244 +106.01 +/- 14.04 0 9 89 147 5 +226.0 +/- 36.29
196306 ncm-dbt-01 1191178 500 212 51 237 +116.0 +/- 13.54 0 6 82 157 5 +254.16 +/- 37.82
196305 ncm-dbt-06 1254799 500 186 54 260 +93.95 +/- 13.29 0 7 107 133 3 +198.34 +/- 32.63
196304 ncm-dbt-04 1231606 500 199 50 251 +106.77 +/- 13.72 0 8 89 149 4 +230.16 +/- 36.26
196303 ncm-dbt-03 1223839 500 201 48 251 +109.83 +/- 14.37 0 9 86 148 7 +232.26 +/- 36.96
196302 ncm-dbt-01 1179498 500 198 67 235 +93.2 +/- 14.95 0 13 101 128 8 +187.16 +/- 33.99
196301 ncm-dbt-02 1253164 500 194 63 243 +93.2 +/- 14.21 1 11 96 140 2 +200.24 +/- 34.91
196300 ncm-dbt-05 1243294 500 193 54 253 +99.2 +/- 14.45 1 9 95 140 5 +209.91 +/- 35.06
196299 ncm-dbt-04 1232341 500 207 55 238 +109.07 +/- 14.37 1 7 87 149 6 +234.38 +/- 36.71
196298 ncm-dbt-06 1225455 500 189 65 246 +88.0 +/- 14.56 0 14 103 128 5 +179.9 +/- 33.65
177235 ncm-dbt-05 503422 198 75 20 103 +99.11 +/- 23.75 0 6 34 57 2 +207.63 +/- 59.41
177234 ncm-dbt-01 1475549 202 83 22 97 +108.29 +/- 22.35 0 4 34 61 2 +232.35 +/- 59.54
177233 ncm-dbt-03 1481810 202 82 17 103 +115.91 +/- 21.7 0 4 29 67 1 +259.71 +/- 64.79
177232 ncm-dbt-02 1481081 200 83 27 90 +99.95 +/- 25.82 1 7 29 61 2 +214.85 +/- 63.66
177231 ncm-dbt-04 1471156 198 76 26 96 +89.67 +/- 23.49 0 7 36 55 1 +188.52 +/- 57.61

Commit

Commit ID 79c5f3a69247b44ee6362a3d9236cd9bc048c5f5
Author Rodrigo Roim
Date 2022-10-16 10:58:48 UTC
Fix tablebase probe for dtz >1000 w/o 50 move rule For qn4N1/6R1/3K4/8/B2k4/8/8/8 w - - 0 1, white loses with DTZ 1034. See https://syzygy-tables.info/?fen=qn4N1/6R1/3K4/8/B2k4/8/8/8_w_-_-_0_1 Prior to this fix, due to a too small hard-coded value, Stockfish interpreted this as winning. The new value picked (1<<18) is large enough to deal with the largest DTZ values that can be stored in the current syzygy format. closes https://github.com/official-stockfish/Stockfish/pull/4187 No functional change.
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