New chess Engines clones and News 2021

[AlexChess]

From Chess2u:

It´s a clone of Raubfisch X, but with SOLIDOR net, strong, tactical, aggresive...Very nice, thank you!!

Since it's a clone of a not GPLv3 compliant clone... no problem for the Raufbisch fake authors. If they release their modified source code, they can defend their property.

That is actually not how it works, it is not Raubfisch who may ask for his rights, but it is Stockfish, because Raubfisch is legally a property of Stockfish, even if the cloner doesn't admit/respect it

Dear Amanj,

I know, Raubfisch authors should made their strong engine GPLv3 compliant attributing the original work to the SF team, then Solidor should do the same to both. As explained before, I'm not sharing illegal engines, but only privately testing them for statistical purposes, and this is allowed.

Ethically and legally speaking this is not true, but SF has little interest/money to spend every minute/effort on everybody to correct the issue

PS: I'm still waiting Zahak 7.0 + NNUE + Polyglot support. I think that on very short blitz TC (bullet-like) your actual engine is already competitive, but after a preliminary test on +-15 mins /all TC isn't still 3000+ ELO. I support all friends here and ASAP they score some points (+- 10%), I'll insert them in my SuperBlitz. I'm already testing beta engines, like Coiled and Combusken that have been kindly compiled/patched for my system by their authors, and if you want I can do the same with Zahak 7.0b.

Best regards, Alex

Zahak 7.0 is out already, BTW

...Since yesterday, and I don't follow the topic where you have posted the announce anymore.

I don't find it the net to add to 7.0.

The default net is embedded, but if you are using BansksiaGUI, I had to fix a UCI issue with that GUI in version 7.1:

https://github.com/amanjpro/zahak/releases/tag/7.1

Finally managed to run it, but only the 386 version and without bin book or it crashes... (6.0 amd64 was running fine)

[amanjpro]

From Chess2u:

It´s a clone of Raubfisch X, but with SOLIDOR net, strong, tactical, aggresive...Very nice, thank you!!

Since it's a clone of a not GPLv3 compliant clone... no problem for the Raufbisch fake authors. If they release their modified source code, they can defend their property.

That is actually not how it works, it is not Raubfisch who may ask for his rights, but it is Stockfish, because Raubfisch is legally a property of Stockfish, even if the cloner doesn't admit/respect it

Dear Amanj,

I know, Raubfisch authors should made their strong engine GPLv3 compliant attributing the original work to the SF team, then Solidor should do the same to both. As explained before, I'm not sharing illegal engines, but only privately testing them for statistical purposes, and this is allowed.

Ethically and legally speaking this is not true, but SF has little interest/money to spend every minute/effort on everybody to correct the issue

PS: I'm still waiting Zahak 7.0 + NNUE + Polyglot support. I think that on very short blitz TC (bullet-like) your actual engine is already competitive, but after a preliminary test on +-15 mins /all TC isn't still 3000+ ELO. I support all friends here and ASAP they score some points (+- 10%), I'll insert them in my SuperBlitz. I'm already testing beta engines, like Coiled and Combusken that have been kindly compiled/patched for my system by their authors, and if you want I can do the same with Zahak 7.0b.

Best regards, Alex

Zahak 7.0 is out already, BTW

...Since yesterday, and I don't follow the topic where you have posted the announce anymore.

I don't find it the net to add to 7.0.

The default net is embedded, but if you are using BansksiaGUI, I had to fix a UCI issue with that GUI in version 7.1:

https://github.com/amanjpro/zahak/releases/tag/7.1

Finally managed to run it, but only the 386 version and without bin book or it crashes... (6.0 amd64 was running fine)

Can you post the crash log? I don't have m1 device to test

[AlexChess]

From Chess2u:

It´s a clone of Raubfisch X, but with SOLIDOR net, strong, tactical, aggresive...Very nice, thank you!!

Since it's a clone of a not GPLv3 compliant clone... no problem for the Raufbisch fake authors. If they release their modified source code, they can defend their property.

That is actually not how it works, it is not Raubfisch who may ask for his rights, but it is Stockfish, because Raubfisch is legally a property of Stockfish, even if the cloner doesn't admit/respect it

Dear Amanj,

I know, Raubfisch authors should made their strong engine GPLv3 compliant attributing the original work to the SF team, then Solidor should do the same to both. As explained before, I'm not sharing illegal engines, but only privately testing them for statistical purposes, and this is allowed.

Ethically and legally speaking this is not true, but SF has little interest/money to spend every minute/effort on everybody to correct the issue

PS: I'm still waiting Zahak 7.0 + NNUE + Polyglot support. I think that on very short blitz TC (bullet-like) your actual engine is already competitive, but after a preliminary test on +-15 mins /all TC isn't still 3000+ ELO. I support all friends here and ASAP they score some points (+- 10%), I'll insert them in my SuperBlitz. I'm already testing beta engines, like Coiled and Combusken that have been kindly compiled/patched for my system by their authors, and if you want I can do the same with Zahak 7.0b.

Best regards, Alex

Zahak 7.0 is out already, BTW

...Since yesterday, and I don't follow the topic where you have posted the announce anymore.

I don't find it the net to add to 7.0.

The default net is embedded, but if you are using BansksiaGUI, I had to fix a UCI issue with that GUI in version 7.1:

https://github.com/amanjpro/zahak/releases/tag/7.1

Finally managed to run it, but only the 386 version and without bin book or it crashes... (6.0 amd64 was running fine)

Can you post the crash log? I don't have m1 device to test

First draw against Drofa (3125 ELO) .. ok I send you the arena log. It was working, it will work again. I publish it in promising engines...

[AlexChess]

Soviet NN 2021 (Russian Federation)

An appreciated return from 2019, it disappeared and returned in 2020, but wasn't anymore compatible with my system. I remember the not NNUE version as very strong. Just started testing the latest build with NNUE on my SuperBlitz, new results very soon

Since it's confirmed that Soviet clone is exactly Raubfisch X with Solidor NNUE, I attribute it at least on the logo and I'll test both to see the differences!

[AlexChess]

Coiled 0.8 by Oscar Gavira ELO: ± 3250 (Spain)



Found on the web another FREE interesting engine + nnue and managed to install it on my system disabling an AVX2.dll hoping that it will stay stable (I bet it will be better than other commercial engines ) ...Started testing it on my SuperBlitz, too.

Language: C
The engine is: Open Source. GPL-3.0 License.

Please, could somebody compile it also for macOS Silicon M1 and Linux ARM64?

Web: https://www.oscargavira.es/?sec=Coiled_Informacion
Github: https://github.com/Oscar-Gavira/Coiled
Download: https://github.com/Oscar-Gavira /Coil...coiled_0.8.zip

Coiled 1.0 just released, no more problems to run it on my system ARM64:
https://workupload.com/file/rZdkenCXg5j

[AlexChess]

BrainLearn 14.1 by Andrea Manzo and Omar Khalid (author of Eman!) 3700+ ELO (ITALY)

A very strong Stockfish derivate, with improvement on the configuration parameters, book support and some algorithms that have made great Eman 7.40

https://github.com/amchess/BrainLearn
https://www.chessprogramming.org/Andrea_Manzo

[AlexChess]

Fat Titz 1.1 by Sopel (3700+ ELO)


https://github.com/Sopel97/FatTitz/releases/tag/v1.1
https://drive.google.com/drive/folders/ ... sp=sharing

This is a FREE GPLv3 UCI-compatibile chess engine. It is a fork of Cfish.

This engine uses a HalfKAv2-2048x2-64-64-1 evaluation network, which contains whopping 4 times the knowledge of Stockfish 14. It was trained partially on Lc0 data, which gives it a unique positional style, while still preserving the tactical sharpness of Stockfish. The network was trained using a modification of the state-of-the-art NNUE trainer, utilizing publicly available datasets 1, 2, 3

Due to the large size the release is available only on google drive here. It includes Windows and Linux binaries for all supported architectures, along with the network. This is the only place where the network can be found.

Additional features
Polyglot support
Anarchy mode

setoption name Anarchy value true
makes en-passant forced
64-bit hash key
reduces the amount of hash collisions and allows for more robust long analysis
resizing the transposition table preserves the contents as much as possible
Persistent transposition table

setoption name PersistentTTMinDepth value 4
(min 0, max 255). The minimum entry depth to store/load.

setoption name PersistentTTFileName value filename.ptt
. The file which contains the persisted TT. Doesn't do anything on itself.

setoption name PersistentTTSerialize
. Serializes the current transposition table according to the options above. The file is overwritten.

setoption name PersistentTTDeserialize
. Deserializes the current transposition table according to the options above. Only worse entries are replaced.

[AlexChess]

Soviet NN 2021 (Russian Federation)

An appreciated return from 2019, it disappeared and returned in 2020, but wasn't anymore compatible with my system. I remember the not NNUE version as very strong. Just started testing the latest build with NNUE on my SuperBlitz, new results very soon

Since it's confirmed that Soviet clone is exactly Raubfisch X with Solidor NNUE, I attribute it at least on the logo and I'll test both to see the differences!

Removed Soviet from SuperBlitz, since it isn't only a clone 1:1 of Raubfisch X47, but also the NN isn't generated by Solidor, but a SF test NN renamed

[Guenther]

Soviet NN 2021 (Russian Federation)

An appreciated return from 2019, it disappeared and returned in 2020, but wasn't anymore compatible with my system. I remember the not NNUE version as very strong. Just started testing the latest build with NNUE on my SuperBlitz, new results very soon :wink:

Since it's confirmed that Soviet clone is exactly Raubfisch X with Solidor NNUE, I attribute it at least on the logo and I'll test both to see the differences! :)

Removed Soviet from SuperBlitz, since it isn't only a clone 1:1 of Raubfisch X47, but also the NN isn't generated by Solidor, but a SF test NN renamed :(

Hopefully you have learned a lesson here.
Just don't use anonymous engines (or nets, or whatever).
There is always a reason and the reason in 99.99% of the cases is, that you don't get what 'they' told.
(hint: Raubfisch also has no real 'authors' just anonymous ones...)

[AlexChess]

Blue Marlin 14.4a by "Triton6654" 3700 ELO NOT GPLv3 compliant (so I only privately test it without sharing a download link)

Is a new VERY STRONG Stockfish 14.1 derivative with aggressive style (last Stockfish 14.1 official compilation is very strong but VERY DRAWNISH and boring, too. SF-PB compilation from the same github GPLv3 source (supporting Polyglot books) by Chessman is much better!!! NOTE: All top 30 engines (excluding Dragon 2.5.1) of my SuperBlitz are Stockfish & SF derivative! While I deprecate authors not releasing their modified code to the chess community (as GPLv3 imposes) I monitor the performance of their engines, too.