Changes

NNUE, introduced in 2018 by [[Yu Nasu]] <ref>[[Yu Nasu]] ('''2018'''). ''&#398;U&#1048;&#1048; Efficiently Updatable Neural-Network based Evaluation Functions for Computer Shogi''. Ziosoft Computer Shogi Club, [https://github.com/ynasu87/nnue/blob/master/docs/nnue.pdf pdf] (Japanese with English abstract)[https://github.com/asdfjkl/nnue GitHub - asdfjkl/nnue translation] </ref>,

In August 2020, [[Stockfish#Fishtest|Fishtest]] revealed Stockfish NNUE was stronger than the classical one at least 80 Elo <ref>[https://blog.stockfishchess.org/post/625828091343896577/introducing-nnue-evaluation Introducing NNUE Evaluation], August 06, 2020</ref>. In July 2020, the playing code of NNUE was put into the official Stockfish repository as a branch for further development and examination. In August that playing code merged to the master branch and become an official part of the engine. However, the training code still remained in Nodchip's repository <ref>[https://github.com/official-stockfish/Stockfish/issues/2823 NNUE merge · Issue #2823 · official-stockfish/Stockfish · GitHub] by [[Joost VandeVondele]], July 25, 2020</ref> <ref>[https://github.com/nodchip/Stockfish GitHub - nodchip/Stockfish: UCI chess engine] by [[Hisayori Noda|Nodchip]]</ref> then replaced by [https://en.wikipedia.org/wiki/PyTorch PyTorch] <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75724 Pytorch NNUE training] by [[Gary Linscott]], [[CCC]], November 08, 2020</ref><ref>[http://talkchess.com/forum3/viewtopic.php?f=7&t=79020 Why NNUE trainer requires an online qsearch on each training position?] by [[nkg114mc]], [[CCC]], January 01, 2022</ref>. On September 02, 2020, '''Stockfish 12''' was released with a huge jump in playing strength due to the introduction of [[NNUE]] and further tuning <ref>[https://blog.stockfishchess.org/post/628172810852925440/stockfish-12 Stockfish 12], The Stockfish Team, [https://blog.stockfishchess.org/ Stockfish Blog], September 02, 2020</ref>.

64 x (64 x 10 + 1) = 41,024 inputs for each half, which are multiplied by a 16-bit integer weight vector for 256 outputs per half, in total, 256 x 41,024 = 10,503502,144 weights.

All networks are Networks were built by some volunteers but not by any big community (differs from [[Leela Chess Zero]]) and can be , uploaded into [[Stockfish#Fishtest|Fishtest]] for testing. Networks with good test results will be are released officially on the Fishtest website <ref>[https://tests.stockfishchess.org/nns Neural Net download and statistics]</ref>with average speed of 2 weeks per network <ref>[https://github.com/official-stockfish/Stockfish/discussions/3628#discussioncomment-1047323 One year of NNUE.... · official-stockfish/Stockfish · GitHub] by [[Joost VandeVondele]], July 26, 2021</ref>. After long discussing the best way to publish networks with Stockfish <ref>[https://github.com/official-stockfish/Stockfish/issues/3030 Improve dealing with the default net? Issue ##3030 · official-stockfish/Stockfish · GitHub] by [[Joost VandeVondele]], August 19, 2020</ref>, the developing team decided to embed the default network into Stockfish binaries, making sure NNUE always works as well as bringing more convenience to users.

After long discussing In late 2020, [[Gary Linscott]] started an implementation of the best way to publish networks with Stockfish NNUE training in [https://en.wikipedia.org/wiki/PyTorch PyTorch] <ref>[http://www.talkchess.com/forum3/viewtopic.php?f=7&t=75724 Pytorch NNUE training] by [[Gary Linscott]], [[CCC]], November 08, 2020</ref> <ref>[https://github.com/officialglinscott/nnue-pytorch GitHub -stockfishglinscott/Stockfishnnue-pytorch: NNUE (Chess evaluation) trainer in Pytorch]</issues/3030 Improve dealing ref> using [[GPU]] resources to efficiently train networks. Further, the collaboration with the default net? Issue ##3030 · official[[Leela Chess Zero]] team in February 2021 <ref>[https://groups.google.com/g/fishcooking/c/AzYDbbv-stockfish/Coo Stockfish · GitHub13] by [[Joost VandeVondele]], August [[Computer Chess Forums|FishCooking]], February 19, 20202021 </ref>payed off, the developing team decided in providing billions of positions to embed train the default network into new networks <ref>[https://stockfishchess.org/blog/2021/stockfish-14/ Stockfish 14], The Stockfish binariesTeam, July 02, making sure NNUE always works as well as bringing more convenience to users2021</ref>.

===January ...===

* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=74666 SF NNUE Problem] by [[Stephen Ham]], [[CCC]], August 03, 2020

===October ...===

* [http://ccrl.chessdom.com/ccrl/404/cgi/engine_details.cgi?match_length=30&each_game=1&print=Details&each_game=1&eng=Stockfish%2014%2064-bit%208CPU#Stockfish_14_64-bit_8CPU Stockfish 14 64-bit 8CPU] in [[CCRL|CCRL Blitz]]* [http://ccrl.chessdom.com/ccrl/404/cgi/engine_details.cgi?print=Details&each_game=1&eng=Stockfish%2012%2064-bit#Stockfish_12_64-bit Stockfish 12 64-bit] in [[CCRL|CCRL Blitz]]

* [[:Category:Hiromi UeharaSenri Kawaguchi|HiromiSenri Kawaguchi]] - [https://en.wikipediaameliaray.org/wikinet/Spectrum_(Hiromi_album) Spectrumquarantuned The Quarantuned Music Festival], 2019May 2020, [https://en.wikipedia.org/wiki/YouTube YouTube] Video: {{#evu:https://www.youtube.com/watch?v=A8RCz_RoefMjO8VlSqw7do|alignment=left|valignment=top}}

[[Category:Hiromi UeharaSenri Kawaguchi]]