Dev Builds » 20200412-1838

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 11:04:40 1231557 3980 189 2333 1458 -209.26 +/- 6.73 456 1249 268 17 0 -434.24 +/- 20.86
ncm-dbt-02 10:58:57 1259974 3940 176 2324 1440 -212.45 +/- 6.72 456 1249 253 11 1 -448.54 +/- 21.49
ncm-dbt-03 11:04:42 1270278 3976 178 2365 1433 -214.87 +/- 6.79 473 1259 239 16 1 -452.96 +/- 22.08
ncm-dbt-04 00:28:24 1482329 168 9 99 60 -207.8 +/- 33.13 19 53 11 1 0 -430.56 +/- 113.7
ncm-dbt-05 10:59:56 1257261 3956 193 2305 1458 -206.91 +/- 6.7 442 1244 277 14 1 -430.01 +/- 20.53
ncm-dbt-06 11:02:51 1260762 3980 170 2346 1464 -213.22 +/- 6.69 464 1261 252 13 0 -449.76 +/- 21.53
20000 915 11772 7313 -211.31 +/- 3.0 2310 6315 1300 72 3 -442.79 +/- 9.45

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
210443 ncm-dbt-02 1235719 272 13 159 100 -208.32 +/- 24.25 28 91 16 1 0 -459.82 +/- 91.37
210442 ncm-dbt-05 1242989 288 12 156 120 -190.84 +/- 23.23 25 96 21 2 0 -408.81 +/- 77.83
210441 ncm-dbt-01 1193174 312 13 181 118 -209.15 +/- 25.63 38 95 20 3 0 -416.56 +/- 79.14
210440 ncm-dbt-03 1255576 314 13 192 109 -225.0 +/- 24.32 40 100 16 1 0 -486.41 +/- 91.52
210439 ncm-dbt-06 1223852 314 12 197 105 -235.0 +/- 26.47 48 89 20 0 0 -466.91 +/- 80.39
210438 ncm-dbt-02 1228035 500 21 294 185 -212.86 +/- 18.94 56 164 28 1 1 -466.04 +/- 66.79
210437 ncm-dbt-05 1232056 500 25 286 189 -201.19 +/- 17.44 47 169 32 2 0 -444.09 +/- 62.18
210436 ncm-dbt-01 1208948 500 18 302 180 -223.94 +/- 19.68 65 156 27 2 0 -471.92 +/- 68.11
210435 ncm-dbt-03 1231469 500 27 301 172 -213.85 +/- 19.86 62 153 32 3 0 -433.94 +/- 61.95
210434 ncm-dbt-06 1244067 500 20 308 172 -228.07 +/- 21.06 73 144 31 2 0 -449.35 +/- 63.25
210433 ncm-dbt-02 1228804 500 18 294 188 -215.84 +/- 17.47 54 168 28 0 0 -490.7 +/- 66.89
210432 ncm-dbt-05 1199285 500 25 288 187 -203.11 +/- 17.72 50 164 35 1 0 -438.95 +/- 59.31
210431 ncm-dbt-01 1201554 500 26 288 186 -202.15 +/- 18.75 54 156 38 2 0 -415.05 +/- 56.74
210430 ncm-dbt-03 1215990 500 31 296 173 -205.03 +/- 18.4 54 158 37 1 0 -429.05 +/- 57.55
210429 ncm-dbt-06 1239740 500 23 291 186 -207.95 +/- 19.59 59 153 35 3 0 -419.61 +/- 59.12
210428 ncm-dbt-02 1247306 500 29 296 175 -206.97 +/- 19.64 61 146 42 1 0 -406.2 +/- 53.75
210427 ncm-dbt-05 1211199 500 24 294 182 -209.9 +/- 19.49 60 152 36 2 0 -424.28 +/- 58.4
210426 ncm-dbt-01 1205383 500 31 297 172 -206.0 +/- 20.05 63 141 45 1 0 -393.6 +/- 51.79
210425 ncm-dbt-06 1226419 500 21 298 181 -216.84 +/- 17.83 55 168 26 1 0 -490.71 +/- 69.77
210424 ncm-dbt-03 1240839 500 26 297 177 -210.88 +/- 17.83 54 163 33 0 0 -460.31 +/- 61.1
210423 ncm-dbt-02 1242360 500 17 294 189 -216.84 +/- 18.89 61 155 34 0 0 -454.75 +/- 60.11
210422 ncm-dbt-01 1168860 500 23 293 184 -209.9 +/- 19.11 58 156 34 2 0 -433.94 +/- 60.2
210421 ncm-dbt-06 1229169 500 22 290 188 -207.94 +/- 18.43 56 156 38 0 0 -433.93 +/- 56.58
210420 ncm-dbt-05 1235435 500 18 303 179 -224.97 +/- 20.03 68 150 31 1 0 -460.32 +/- 63.35
210419 ncm-dbt-03 1251685 500 20 308 172 -228.07 +/- 20.45 69 153 25 3 0 -471.92 +/- 70.46
210418 ncm-dbt-02 1223230 500 23 303 174 -219.87 +/- 19.32 62 158 28 2 0 -466.04 +/- 66.79
210417 ncm-dbt-06 1240932 500 21 299 180 -217.85 +/- 18.83 60 159 30 1 0 -466.04 +/- 64.5
210416 ncm-dbt-05 1250802 500 24 291 185 -206.97 +/- 19.45 59 151 38 2 0 -415.05 +/- 56.74
210415 ncm-dbt-01 1209619 500 20 288 192 -207.95 +/- 17.62 49 173 25 3 0 -471.92 +/- 70.46
210414 ncm-dbt-03 1233928 500 20 296 184 -215.84 +/- 19.36 61 156 31 2 0 -449.35 +/- 63.25
210413 ncm-dbt-02 1219608 500 20 292 188 -211.87 +/- 19.0 58 158 32 2 0 -444.09 +/- 62.18
210412 ncm-dbt-05 1226744 500 26 295 179 -208.92 +/- 19.73 61 149 38 2 0 -415.05 +/- 56.74
210411 ncm-dbt-06 1230662 500 20 284 196 -204.07 +/- 16.83 46 173 30 1 0 -466.04 +/- 64.5
210410 ncm-dbt-01 1192548 500 27 290 183 -203.11 +/- 18.12 52 160 37 1 0 -429.05 +/- 57.55
210409 ncm-dbt-03 1256271 500 12 291 197 -218.85 +/- 18.12 56 169 23 2 0 -497.4 +/- 74.27
210408 ncm-dbt-06 1214234 500 26 276 198 -190.85 +/- 17.82 44 166 36 4 0 -406.2 +/- 58.04
210407 ncm-dbt-02 1233202 500 26 292 182 -206.0 +/- 19.12 56 157 34 3 0 -424.28 +/- 60.03
210406 ncm-dbt-05 1232553 500 31 296 173 -205.03 +/- 18.79 56 154 39 1 0 -419.61 +/- 55.94
210405 ncm-dbt-03 1242035 500 24 291 185 -206.98 +/- 20.37 60 152 34 3 1 -415.05 +/- 59.75
210404 ncm-dbt-01 1199853 500 23 293 184 -209.9 +/- 18.71 55 163 29 3 0 -449.35 +/- 65.22
178156 ncm-dbt-02 1481510 168 9 100 59 -210.71 +/- 33.86 20 52 11 1 0 -430.56 +/- 113.7
178155 ncm-dbt-05 1484294 168 8 96 64 -202.06 +/- 33.62 16 59 7 1 1 -461.8 +/- 144.53
178154 ncm-dbt-04 1482329 168 9 99 60 -207.8 +/- 33.13 19 53 11 1 0 -430.56 +/- 113.7
178153 ncm-dbt-06 1497787 166 5 103 58 -235.63 +/- 34.9 23 53 6 1 0 -518.23 +/- 173.32
178152 ncm-dbt-03 1504714 162 5 93 64 -211.47 +/- 31.95 17 55 8 1 0 -472.74 +/- 139.97
178151 ncm-dbt-01 1504079 168 8 101 59 -216.62 +/- 34.31 22 49 13 0 0 -430.53 +/- 102.66

Commit

Commit ID 2c5f0efa1350ea19d32c599ddd6b9350f1d216ff
Author Joost VandeVondele
Date 2020-04-12 18:38:47 UTC
Extend irreversible moves if these are ttMoves and played in positions with a high value of the rule50 counter. The unusual extension of 2 is safe in this context as awarding it will reset the rule50 counter, making sure it is awarded very rarely in a search path. This patch partially addresses https://github.com/official-stockfish/Stockfish/issues/2620 as it should make it less likely to play a move that resets the counter, but that is worse than alternative moves after a slightly deeper search. passed STC: LLR: 2.96 (-2.94,2.94) {-0.50,1.50} Total: 71658 W: 13840 L: 13560 D: 44258 Ptnml(0-2): 1058, 7921, 17643, 8097, 1110 https://tests.stockfishchess.org/tests/view/5e90d0f6754c3424c4cf9f41 passed LTC: LLR: 2.94 (-2.94,2.94) {0.25,1.75} Total: 85082 W: 11069 L: 10680 D: 63333 Ptnml(0-2): 459, 6982, 27259, 7393, 448 https://tests.stockfishchess.org/tests/view/5e917470af0a0143109dc341 closes https://github.com/official-stockfish/Stockfish/pull/2623 Bench: 4432822
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