New engine releases 2020

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voffka
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Full name: Volodymyr Shcherbyna
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Re: New engine releases 2020

Post by voffka » Sat Aug 01, 2020 4:49 pm

Image

Igel 2.6.0 at https://github.com/vshcherbyna/igel/releases/tag/2.6.0 (binaries for Linux, macOS and Windows).

This release brings various improvements in strength, especially in evaluation function and adds around 55 elo of strength at LTC.

What's new:

- Implement piece threats evaluation
- Simplify connected pass pawn evaluation
- Implement backward pawn evaluation
- Apply tempo after interpolation and speed up null move evaluation
- Implement verification qsearch for probcut
- Remove L1 normalisation from tuner and retune all params
- Implement trapped rook evaluation
- Implement razoring in search
- Implement king danger evaluation
- Implement hanging piece evaluation
- Implement weak pawn evaluation
- Implement restricted piece evaluation
- Implement lazy evaluation with a threshould of 300cp
- Implement multicut search
- Implement threat by a protected pawn evaluation
- Improve safe check evaluations
- Bench 7538060

Regression run against Igel 2.5.0 at 60s+0.6 time control:

Code: Select all

ELO   | 55.64 +- 4.19 (95%)
SPRT  | 60.0+0.6s Threads=1 Hash=64MB
LLR   | 0.00 (-2.94, 2.94) [0.00, 0.00]
Games | N: 12028 W: 3703 L: 1793 D: 6532
In case of bug reports, questions, discussions please ask them at main Igel topic at viewtopic.php?p=854288#p854288 to prevent polluting this thread.

Damir
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Re: New engine releases 2020

Post by Damir » Sat Aug 01, 2020 5:53 pm

Many thanks for new Igel Mr Volodymyr. :) :)

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Roland Chastain
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Hopeless 0.49.0.3

Post by Roland Chastain » Sat Aug 01, 2020 6:44 pm

Roland Chastain wrote:
Mon Jan 27, 2020 10:47 pm
I created a git repository with the source code of Clericus/Hopeless by Pawel Koziol. I made some modifications for compatibility with the current version of the Delphi compiler, tried to refresh the graphical interface, added a french translation and made some other little modifications. The repository is here:

https://gitlab.com/rchastain/hopeless
Hello! I ported Clericus/Hopeless from Delphi to Lazarus. So Hopeless is now available for Linux. You can find the source code of the Lazarus project and a Linux 64 binary here:

https://gitlab.com/rchastain/hopeless-l ... -/releases

I can't provide a Windows binary because I no longer have a Windows system. If there is a Lazarus and Windows user who would want to build the engine for Windows, he would be welcome. (Please choose the "XBoard_Release" build mode.)

Regards.

Roland
Qui trop embrasse mal étreint.

karger
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Re: Hopeless 0.49.0.3

Post by karger » Sat Aug 01, 2020 7:45 pm

Thanks , hopefully someone can share a windows binary.

adnoh
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Re: Hopeless 0.49.0.3

Post by adnoh » Sat Aug 01, 2020 10:26 pm

Roland Chastain wrote:
Sat Aug 01, 2020 6:44 pm
Roland Chastain wrote:
Mon Jan 27, 2020 10:47 pm
I created a git repository with the source code of Clericus/Hopeless by Pawel Koziol. I made some modifications for compatibility with the current version of the Delphi compiler, tried to refresh the graphical interface, added a french translation and made some other little modifications. The repository is here:

https://gitlab.com/rchastain/hopeless
Hello! I ported Clericus/Hopeless from Delphi to Lazarus. So Hopeless is now available for Linux. You can find the source code of the Lazarus project and a Linux 64 binary here:

https://gitlab.com/rchastain/hopeless-l ... -/releases

I can't provide a Windows binary because I no longer have a Windows system. If there is a Lazarus and Windows user who would want to build the engine for Windows, he would be welcome. (Please choose the "XBoard_Release" build mode.)

Regards.

Roland
I did make an attempt to create a Windows build using Lazarus 2.0.10 and the GUI build seems to work but the xboard build crashes as soon as I try to start a game in Arena.

https://ibb.co/5W8cv6v

I have made no attempt to debug that. If you want to pursue this I do not mind spending some time on this.

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Roland Chastain
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Re: Hopeless 0.49.0.3

Post by Roland Chastain » Sat Aug 01, 2020 10:45 pm

adnoh wrote:
Sat Aug 01, 2020 10:26 pm
I did make an attempt to create a Windows build using Lazarus 2.0.10 and the GUI build seems to work but the xboard build crashes as soon as I try to start a game in Arena.

https://ibb.co/5W8cv6v

I have made no attempt to debug that. If you want to pursue this I do not mind spending some time on this.
Great! Thank you. Let's continue the discussion here:
viewtopic.php?f=2&t=74648
Qui trop embrasse mal étreint.

voffka
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Full name: Volodymyr Shcherbyna
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Re: New engine releases 2020

Post by voffka » Sun Aug 02, 2020 12:46 am

Damir wrote:
Sat Aug 01, 2020 5:53 pm
Many thanks for new Igel Mr Volodymyr. :) :)
Thanks Damir, I am glad if people find Igel useful.

MrBob
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Full name: Vincent Yu

Re: New engine releases 2020

Post by MrBob » Mon Aug 03, 2020 11:37 pm

Hello, I made my first chess engine, Mr Bob. Thought I might post this here.

https://github.com/bobsquared/Mr_Bob_Ch ... tag/v0.7.0

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