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'''Halogen''',<br/>
an [[UCI]] compliant [[:Category:Open Source|open source chess engine]] by [[Kieren Pearson]], written in [[Cpp|C++]], licensed under the [[Free Software Foundation#GPL|GPL v3]] and first released on [https://en.wikipedia.org/wiki/GitHub GitHub] in June 2019 <ref>[https://github.com/KierenP/Halogen/releases/tag/v2.3 Release Halogen 2.3 · KierenP/Halogen · GitHub]</ref>.
Since version 7 in September 2020, Halogen features an own, [[Incremental Updates|incrementally updated]] [[NNUENeural Networks|neural network]] for its [[Evaluation Function|evaluation function]], inspired by [[Stockfish NNUE]].
Halogen 8 features a larger network than Halogen 8, but runs significantly faster due to improvements and optimisations, best if compiled for [[AVX2]] instructions.
Its development and testing was supported on the [[OpenBench]] framework. Networks are trained through a private, from scratch [[C]] implementation created in collaboration with [[Andrew Grant]] <ref>[https://github.com/KierenP/Halogen/blob/master/README.md Halogen/README.md at master · KierenP/Halogen · GitHub]</ref>.
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=72613&start=457 Re: New engine releases 2020] by [[Kieren Pearson]], [[CCC]], October 27, 2020 » Halogen 8
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=75640 Halogen questions] by [[Günther Simon]], [[CCC]], November 01, 2020
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=72613&start=487 Re: New engine releases 2020] by [[Kieren Pearson]], [[CCC]], November 11, 2020 » Halogen 8.1
* [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=75890&start=6 Re: Speculations about NNUE development (was New engine releases 2020)] by [[Connor McMonigle]], [[CCC]], November 12, 2020 » [[Dragon by Komodo Chess]], [[Seer]]
: [http://www.talkchess.com/forum3/viewtopic.php?f=2&t=75890&start=9 Re: Speculations about NNUE development (was New engine releases 2020)] by [[Connor McMonigle]], [[CCC]], November 12, 2020
=External Links=
[[Category:Windows]]
[[Category:NNUE]]
[[Category:OpenBench]]
[[Category:Music]]
