New engine releases 2020

[connor_mcmonigle]

Is there a way to know if the weights are loaded and used? BTW, why is that file so incredibly large?

That's a fair point. I'll add a generic compile as well. Outside of the engine going from producing random moves to playing reasonabe moves, there's no way to determine if the weights file has been loaded. In fact, for my Windows compiles, I can't seem to get the weights files to load at all for some reason. I'm going to keep investigating sorry about that. The weights file is so incredibly large as my NNUE implementation has a fair number of extra inputs and my model's weights are 32 bit floating point values which are between 2x and 4x the size of the 16 and 8 bit weights used by SF-NNUE.

[Gerd Isenberg]

Interesting engine, worth an own thread.

[Roland Chastain]

A new version of Alouette is available.

• Compatibility with c-chess-cli
• Fixed castling generation
• Improved Perf function

I would like to be sure that there are no more bugs, before trying to make the engine a bit stronger.

[Gabor Szots]

Cosette 2.0, https://github.com/Tearth/Cosette/releases/tag/v2.0

Supernova 2.1.4, https://github.com/MichaeltheCoder7/Sup ... tag/v2.1.4

[Guenther]

Stash 21.2
https://gitlab.com/mhouppin/stash-bot/-/releases

Drofa 2.0 soon to come
https://github.com/justNo4b/Drofa

[No4b]

Stash 21.2
https://gitlab.com/mhouppin/stash-bot/-/releases

Drofa 2.0 soon to come
https://github.com/justNo4b/Drofa

I was about to post Drofa 2.0, but than have second thought about it.
I mostly worked on search during 1.0 -> 2.0 transition, and I must admit i looked a lot on Weiss as a reference. The price of it - some reductions techniques looks too much alike with it for me. So after some consideration, i decided to work on search some more (for instance tweak and tune LMR and LMP formulaes, add some extentions etc).
So my bet is Drofa 2.0 is still ~1 month away.

PS It seems as a good approach, todays Razozing tweak looks like giving ~+10 elo
PPS I`m happy that people here seems to be tracking Drofa progress

[ydebilloez]

A new release of Belofte is available. Version 2.0.6. This is a rewrite from scratch in C++ respecting UCI.
Tested on Windows/Linux/Mac in 32/64 bit.

You can set the algorithm used in UCI. Please note that current version is not yet respecting time-levels, only depth levels.
(Cutechess tc=inf depth=x)
https://sourceforge.net/projects/belofte/

[Kieren Pearson]

https://github.com/KierenP/Halogen/releases/tag/v8

It is with great pleasure I announce the release of Halogen 8. In late September, Halogen was added to the OpenBench framework. As a result, Halogen underwent one of its best months of development so far. In self testing, Halogen 8 is approximately 200 elo stronger than Halogen 7.

Halogen 8 features a larger neural network than was contained in Halogen 7, but due to improvements and optimisations runs significantly faster. The current network was trained using a private neural network trainer written in C by @AndyGrant. I can't thank Andrew enough for the work he has done to support the development of Halogen.

Estimated elo: 2800 CCRL blitz.

[Gabor Szots]

It is with great pleasure I announce the release of Halogen 8. In late September, Halogen was added to the OpenBench framework. As a result, Halogen underwent one of its best months of development so far. In self testing, Halogen 8 is approximately 200 elo stronger than Halogen 7.

Halogen 8 features a larger neural network than was contained in Halogen 7, but due to improvements and optimisations runs significantly faster.

Great news.

[Guenther]

not yet mentioned:

Stash 22.0
https://gitlab.com/mhouppin/stash-bot

MrBob 0.90
https://github.com/bobsquared/Mr_Bob_Chess

Eubos 1.1.4
https://github.com/cjbolt/EubosChess

Olithink 5.8.9 (permanently updated dev versions)
http://brausch.org/home/chess/

SF 20102823 (new nnue net since yesterday too!)
https://abrok.eu/stockfish/

Sapeli 1.94 (for now released in the Mayhem release folder - no idea if that remains this way)
https://github.com/SamuraiDangyo/mayhem/releases