Dev Builds » 20240224-1715

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 12:08:58 466307 7000 2586 1076 3338 +76.14 ± 3.76 3 224 1550 1706 17 +158.69 ± 8.62
ncm-dbt-02 12:14:48 477549 6000 2202 933 2865 +74.61 ± 4.02 1 185 1377 1418 19 +154.28 ± 9.12
ncm-dbt-03 12:11:10 473836 7000 2563 1076 3361 +74.95 ± 3.75 4 216 1590 1669 21 +155.54 ± 8.5
20000 7351 3085 9564 +75.26 ± 2.22 8 625 4517 4793 57 +156.26 ± 5.04

Test Detail

ID Host Base NPS Games WLD Standard Elo Ptnml(0-2) Gamepair Elo CLI PGN
370374 ncm-dbt-03 476867 500 184 76 240 +76.25 ± 14.67 1 17 107 123 2 +158.93 ± 33.03 ↓
370373 ncm-dbt-01 474798 500 184 78 238 +74.79 ± 14.9 2 17 105 125 1 +158.93 ± 33.37 ↓
370372 ncm-dbt-02 482030 500 167 72 261 +66.82 ± 14.48 0 20 118 109 3 +134.15 ± 31.33 ↓
370371 ncm-dbt-03 479767 500 196 66 238 +92.45 ± 13.43 0 8 107 132 3 +194.57 ± 32.69 ↓
370370 ncm-dbt-01 467565 500 180 71 249 +76.97 ± 13.38 0 12 118 119 1 +160.64 ± 31.07 ↓
370369 ncm-dbt-02 477001 500 192 83 225 +76.97 ± 13.53 0 13 116 120 1 +160.64 ± 31.43 ↓
370368 ncm-dbt-03 470965 500 184 82 234 +71.88 ± 14.53 0 20 110 118 2 +147.19 ± 32.57 ↓
370367 ncm-dbt-01 449970 500 186 78 236 +76.25 ± 13.51 0 14 114 122 0 +160.64 ± 31.79 ↓
370366 ncm-dbt-02 481138 500 188 80 232 +76.25 ± 13.21 0 10 124 114 2 +157.24 ± 30.01 ↓
370365 ncm-dbt-03 436924 500 188 75 237 +79.9 ± 14.21 1 15 104 130 0 +171.02 ± 33.51 ↓
370364 ncm-dbt-01 465083 500 178 76 246 +71.88 ± 14.25 0 20 108 122 0 +150.51 ± 32.89 ↓
370363 ncm-dbt-02 474465 500 179 78 243 +71.16 ± 13.93 0 17 116 116 1 +147.19 ± 31.57 ↓
370362 ncm-dbt-01 454259 500 184 79 237 +74.06 ± 13.89 0 16 114 119 1 +153.86 ± 31.85 ↓
370361 ncm-dbt-03 495743 500 185 85 230 +70.43 ± 13.76 0 16 119 114 1 +145.54 ± 31.07 ↓
370360 ncm-dbt-02 468164 500 188 82 230 +74.79 ± 13.91 0 16 113 120 1 +155.54 ± 32.01 ↓
370359 ncm-dbt-01 469260 500 186 64 250 +86.52 ± 15.23 0 22 86 140 2 +181.7 ± 36.74 ↓
370358 ncm-dbt-03 478773 500 177 72 251 +74.06 ± 14.6 0 20 107 121 2 +152.18 ± 33.05 ↓
370357 ncm-dbt-02 459846 500 186 80 234 +74.79 ± 13.0 0 10 125 114 1 +155.54 ± 29.86 ↓
370356 ncm-dbt-03 464333 500 174 85 241 +62.51 ± 14.31 0 20 124 103 3 +124.6 ± 30.44 ↓
370355 ncm-dbt-02 475962 500 190 71 239 +84.3 ± 14.18 0 16 100 133 1 +178.11 ± 34.22 ↓
370354 ncm-dbt-01 462286 500 186 75 239 +78.43 ± 13.42 0 12 116 121 1 +164.07 ± 31.39 ↓
370353 ncm-dbt-03 471491 500 184 71 245 +79.9 ± 13.92 0 14 111 123 2 +165.8 ± 32.28 ↓
370352 ncm-dbt-02 461784 500 193 76 231 +82.83 ± 15.14 1 17 100 128 4 +171.02 ± 34.23 ↓
370351 ncm-dbt-01 457404 500 189 88 223 +71.16 ± 13.79 0 15 121 112 2 +145.54 ± 30.73 ↓
370350 ncm-dbt-03 476367 500 179 70 251 +76.97 ± 13.68 0 14 114 121 1 +160.64 ± 31.79 ↓
370349 ncm-dbt-02 469936 500 178 91 231 +61.07 ± 14.38 0 22 121 105 2 +123.02 ± 30.92 ↓
370348 ncm-dbt-01 442037 500 182 64 254 +83.57 ± 13.71 0 12 110 126 2 +174.55 ± 32.38 ↓
370347 ncm-dbt-03 458752 500 180 77 243 +72.61 ± 13.99 0 18 111 121 0 +152.18 ± 32.38 ↓
370346 ncm-dbt-02 486012 500 179 76 245 +72.61 ± 13.54 0 15 117 118 0 +152.18 ± 31.35 ↓
370345 ncm-dbt-01 479532 500 183 84 233 +69.71 ± 14.17 0 19 114 116 1 +143.89 ± 31.92 ↓
370344 ncm-dbt-03 481612 500 177 82 241 +66.82 ± 12.72 0 11 133 106 0 +138.99 ± 28.73 ↓
370343 ncm-dbt-01 488821 500 191 73 236 +83.57 ± 14.16 1 13 104 131 1 +178.11 ± 33.48 ↓
370342 ncm-dbt-02 498430 500 176 72 252 +73.33 ± 13.86 0 16 115 118 1 +152.18 ± 31.7 ↓
370341 ncm-dbt-01 460012 500 173 85 242 +61.79 ± 14.27 0 22 119 108 1 +126.18 ± 31.22 ↓
370340 ncm-dbt-03 445429 500 184 72 244 +79.17 ± 13.6 0 13 113 123 1 +165.8 ± 31.92 ↓
370339 ncm-dbt-01 468357 500 185 83 232 +71.88 ± 14.53 0 20 110 118 2 +147.19 ± 32.57 ↓
370338 ncm-dbt-03 486989 500 182 81 237 +71.16 ± 14.22 1 17 112 120 0 +150.51 ± 32.22 ↓
370337 ncm-dbt-01 488914 500 199 78 223 +85.78 ± 13.46 0 10 111 127 2 +179.9 ± 32.11 ↓
370336 ncm-dbt-02 495825 500 186 72 242 +80.63 ± 13.79 0 13 112 123 2 +167.53 ± 32.08 ↓
370335 ncm-dbt-03 509703 500 189 82 229 +75.52 ± 14.37 1 13 118 114 4 +153.86 ± 31.15 ↓

Commit

Commit ID e67cc979fd2c0e66dfc2b2f2daa0117458cfc462
Author Disservin
Date 2024-02-24 17:15:04 UTC
Stockfish 16.1 Official release version of Stockfish 16.1 Bench: 1303971 --- Stockfish 16.1 Today, we have the pleasure to announce Stockfish 16.1. As always, you can freely download it at https://stockfishchess.org/download and use it in the GUI of your choice[1]. Don't forget to join our Discord server[2] to get in touch with the community of developers and users of the project! *Quality of chess play* In our testing against its predecessor, Stockfish 16.1 shows a notable improvement in performance, with an Elo gain of up to 27 points and winning over 2 times more game pairs[3] than it loses. *Update highlights* *Improved evaluation* - Updated neural network architecture: The neural network architecture has undergone two updates and is currently in its 8th version[4]. - Removal of handcrafted evaluation (HCE): This release marks the removal of the traditional handcrafted evaluation and the transition to a fully neural network-based approach[5]. - Dual NNUE: For the first time, Stockfish includes a secondary neural network[6], used to quickly evaluate positions that are easily decided. *UCI Options removed* `Use NNUE` and `UCI_AnalyseMode`[7] have been removed as they no longer had any effect. `SlowMover`[8] has also been removed in favor of `Move Overhead`. *More binaries* We now offer 13 new binaries. These new binaries include `avx512`, `vnni256`, `vnni512`, `m1-apple-silicon`, and `armv8-dotprod`, which take advantage of specific CPU instructions for improved performance. For most users, using `sse41-popcnt` (formerly `modern`), `avx2`, or `bmi2` should be enough, but if your CPU supports these new instructions, feel free to try them! *Development changes* - Updated testing book: This new book[9], now derived exclusively from the open Lichess database[10], is 10 times larger than its predecessor, and has been used to test potential improvements to Stockfish over the past few months. - Consolidation of repositories: Aiming to simplify access to our resources, we have moved most Stockfish-related repositories into the official Stockfish organization[11] on GitHub. - Growing maintainer team: We welcome Disservin[12] to the team of maintainers of the project! This extra pair of hands will ensure the lasting success of Stockfish. *Thank you* The Stockfish project builds on a thriving community of enthusiasts (thanks everybody!) who contribute their expertise, time, and resources to build a free and open-source chess engine that is robust, widely available, and very strong. We would like to express our gratitude for the 10k stars[13] that light up our GitHub project! Thank you for your support and encouragement – your recognition means a lot to us. We invite our chess fans to join the Fishtest testing framework[14], and programmers to contribute to the project either directly to Stockfish[15] (C++), to Fishtest[16] (HTML, CSS, JavaScript, and Python), to our trainer nnue-pytorch[17] (C++ and Python), or to our website[18] (HTML, CSS/SCSS, and JavaScript). The Stockfish team [1] https://github.com/official-stockfish/Stockfish/wiki/Download-and-usage#download-a-chess-gui [2] https://discord.gg/GWDRS3kU6R [3] https://tests.stockfishchess.org/tests/view/65d666051d8e83c78bfddbd8 [4] https://github.com/official-stockfish/nnue-pytorch/blob/master/docs/nnue.md#sfnnv8-architecture [5] https://github.com/official-stockfish/Stockfish/commit/af110e0 [6] https://github.com/official-stockfish/Stockfish/commit/584d9ef [7] https://github.com/official-stockfish/Stockfish/commit/c53d2ec [8] https://github.com/official-stockfish/Stockfish/commit/536d692 [9] https://github.com/official-stockfish/books/commit/426eca4 [10] https://database.lichess.org/ [11] https://github.com/official-stockfish/ [12] https://github.com/Disservin [13] https://github.com/official-stockfish/Stockfish/stargazers [14] https://github.com/official-stockfish/fishtest/wiki/Running-the-worker [15] https://github.com/official-stockfish/Stockfish [16] https://github.com/official-stockfish/fishtest [17] https://github.com/official-stockfish/nnue-pytorch [18] https://github.com/official-stockfish/stockfish-web
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