New engine releases & news 2021

[No4b]

Drofa 3.0.0 released.
https://github.com/justNo4b/Drofa/releases/tag/3.0.0

Changes include, but not limited to:

• Tuner implemented (AdaGrad, implementation closely follows Weiss logic and can be considered a c++ rewrite of it )

• Tuning of the evaluation features (using Andrew Grant positions dataset)

• Several new evaluation features added

• SEE implemented

• Aspiration window implemented

• Lazy SMP implemented

Drofa 3.0.0 is ~250 - 300 elo stronger than Drofa 2.2.0:

Code: Select all

STC	(10``+ 0.1``):
Score of Drofa_3.0.0 vs Drofa_2.2.0: 386 - 35 - 79  [0.851] 500
Elo difference: 302.70 +/- 35.74

LTC	(60`+ 0.6`):
Score of Drofa_3.0.0 vs Drofa_2.2.0: 205 - 19 - 76  [0.810] 300
Elo difference: 251.89 +/- 38.73

Special thanks to:
- Terje Kirstihagen (Weiss author)
- Andrew Grant (AdaGrad paper and Ethereal chess engine are great sources of knowledge; Ethereal tuning dataset published on talkchess)
- Kim Kahre, Finn Eggers and Eugenio Bruno (Koivisto team) for allowing Drofa on Koivisto OpenBench instance and motivating me to work on the engine
- OpenBench community for helping me in finding bugs, teaching me (even if unknowingly) good programming practices and interesting discussions

[Gabor Szots]

Thank you, Alexander. What is lunix?

[No4b]

Thank you, Alexander. What is lunix?

Misspelled `Linux`

[Gabor Szots]

Thank you, Alexander. What is lunix?

Misspelled `Linux`

BTW, Drofa does not let itself be installed under Fritz easily, you have to create the eng file manually. It is probably some discrepancy in UCI implementation.

[Gabor Szots]

Fire 8.1 with source code has been released. https://github.com/FireFather/fire/releases/tag/8.1

You might also be interested in this: http://talkchess.com/forum3/viewtopic.p ... 9&start=80

[emadsen]

I have released version 3.0 of my C# chess engine, MadChess. More details available on my MadChess 3.0 Released blog post.

[kranium]

Fire 8.1 with source code has been released. https://github.com/FireFather/fire/releases/tag/8.1

You might also be interested in this: http://talkchess.com/forum3/viewtopic.p ... 9&start=80

In addition to a direct link to the download...not sure, but some may find the info presented here interesting:
https://chesslogik.wixsite.com/fire
and
https://github.com/FireFather/fire

[Frank Quisinsky]

Hi Norman,

no reason for any more criticism.
On the other hand, I like more the closed source projects because I am often thinking ...
Dear programmers, please hold different good ideas secret, enough good ideas are public.

But different programmers like to claim proofs.
I think the most reason is that this group of programmers like to looking in the sources by the others.
That's allways the same. If sources are not available, the program is strong, it must be a clone.

NONSENSE!

Thank you Norman and good luck for the future of Fire.

Best
Frank

[Wolfgang]

Fire 8.1 with source code has been released. https://github.com/FireFather/fire/releases/tag/8.1

You might also be interested in this: http://talkchess.com/forum3/viewtopic.p ... 9&start=80

In addition to a direct link to the download...not sure, but some may find the info presented here interesting:
https://chesslogik.wixsite.com/fire
and
https://github.com/FireFather/fire

Hi Norman,

thanks for the new version, including source code
I tested 8.0 privately under CEGT conditions. Does it make sense to re-test, i.e. is 8.1 stronger/different/weaker than 8.0?
Or can I use the games from 8.0 for our list?
I have no problem to re-test if you think it's better.

Thanks

[kranium]

Hi Norman,

thanks for the new version, including source code
I tested 8.0 privately under CEGT conditions. Does it make sense to re-test, i.e. is 8.1 stronger/different/weaker than 8.0?
Or can I use the games from 8.0 for our list?
I have no problem to re-test if you think it's better.

Thanks

Hi Wolf
There were minor code optimizations, so it may be a tiny bit faster...
of course such a small improvement would only really manifest itself in ultra-fast TCs.

I believe you will find little (if any) elo improvement in 8.1.
In normal play (at CEGT TCs) it should perform and test exactly like 8.0.