New engine releases 2019

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AxolotlFever
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Full name: Louis Mackenzie-Smith
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Re: New engine releases 2019

Post by AxolotlFever » Mon Aug 26, 2019 9:14 pm

Ah yes sorry, I should have made that clear. You can also see the latest release on this page https://github.com/louism33/Axolotl , just click on axolotl_v1.9.jar

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Graham Banks
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Re: New engine releases 2019

Post by Graham Banks » Mon Aug 26, 2019 10:10 pm

AxolotlFever wrote:
Mon Aug 26, 2019 9:14 pm
Ah yes sorry, I should have made that clear. You can also see the latest release on this page https://github.com/louism33/Axolotl , just click on axolotl_v1.9.jar
Thanks. :)
My email addresses:
gbanksnz at gmail.com
gbanksnz at yahoo.co.nz

tmokonen
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Joined: Sun Mar 12, 2006 5:46 pm
Location: Vancouver

Re: New engine releases 2019

Post by tmokonen » Tue Aug 27, 2019 3:10 am

New release of Minic, version 0.87, with executables:

https://github.com/tryingsomestuff/Minic/releases

fabianVDW
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Full name: Fabian von der Warth

Re: New engine releases 2019

Post by fabianVDW » Wed Aug 28, 2019 5:05 pm

New release of FabChess, Version 1.10. https://github.com/fabianvdW/FabChess/r ... tag/v.1.10



This version is about 100 elo stronger than Version 1.9 in selftests at TC 60s +0.6s.
Image
Changelog:
Tweak of history scores
History based Pruning (with another history score)
Better endgame evaluation and mate search
Aspiration window tweaks
Mate distance pruning
LMR tweaks
Slight eval tweaks for supported pawns
QOL:
Fixed about 500 Linter warnings

I am also aware that FabChess blunders every other endgame. I sadly do not know the cause because everytime a clean search does not blunder on the exact moves. Hopefully in future updates with EGTB the problem will be more insignificant (although this will not fix the root of the problem).
Author of FabChess: https://github.com/fabianvdW/FabChess
A UCI compliant chess engine written in Rust.
FabChessWiki: https://github.com/fabianvdW/FabChess/wiki
fabianvonderwarth@gmail.com

Gabor Szots
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Location: Szentendre, Hungary
Full name: Gabor Szots

Re: New engine releases 2019

Post by Gabor Szots » Thu Aug 29, 2019 5:32 am

fabianVDW wrote:
Wed Aug 28, 2019 5:05 pm
I am also aware that FabChess blunders every other endgame. I sadly do not know the cause because everytime a clean search does not blunder on the exact moves. Hopefully in future updates with EGTB the problem will be more insignificant (although this will not fix the root of the problem).
It may be easier to find the reason before implementing EGTB's.
Gabor Szots
CCRL testing group

Norbert Raimund Leisner
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Location: Augsburg - Germany

Re: New engine releases 2019

Post by Norbert Raimund Leisner » Thu Aug 29, 2019 3:26 pm


Norbert Raimund Leisner
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Re: New engine releases 2019

Post by Norbert Raimund Leisner » Thu Aug 29, 2019 3:42 pm


fabianVDW
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Full name: Fabian von der Warth

Re: New engine releases 2019

Post by fabianVDW » Thu Aug 29, 2019 4:45 pm

Gabor Szots wrote:
Thu Aug 29, 2019 5:32 am
fabianVDW wrote:
Wed Aug 28, 2019 5:05 pm
I am also aware that FabChess blunders every other endgame. I sadly do not know the cause because everytime a clean search does not blunder on the exact moves. Hopefully in future updates with EGTB the problem will be more insignificant (although this will not fix the root of the problem).
It may be easier to find the reason before implementing EGTB's.
I will start my journey finding the "potential" bug, but I can not foresee it will be a succesful one
Author of FabChess: https://github.com/fabianvdW/FabChess
A UCI compliant chess engine written in Rust.
FabChessWiki: https://github.com/fabianvdW/FabChess/wiki
fabianvonderwarth@gmail.com

Damir
Posts: 2140
Joined: Mon Feb 11, 2008 2:53 pm

Re: New engine releases 2019

Post by Damir » Thu Aug 29, 2019 7:36 pm

Defenchess 2.2
https://github.com/cetincan0/Defenchess/releases

This release increases the playing strength of Defenchess significantly. Below are every change introduced in this version.
Changes:
Revised time management for X/Y and X+0 (moves per time and zero increment) time controls
Opposite colored bishops endgame knowledge
Slight improvements in how time is counted and PVs are printed while failing high/low (now at least one move will always be printed even when failing)
Improved thread management (fixed a bug where not providing a position after setting the number of threads would crash the engine)
Improved draw (and lack thereof) detection
Fixed an issue where TB scores would never be returned
Fixed a bug in calculating pinned piece mobility
Allowed pinned pieces to capture pieces of equal or higher value in mobility calculation
Implemented followup history
Fixed a bug that prevented extensions from being applied in the first moves searched in PV nodes
Introduced king threats against pieces and pieces flanking the king in evaluation
Introduced the use of history in late move reductions
Tweaked endgame scores for the side with higher material but no pawns

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Graham Banks
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Location: Auckland, NZ

Re: New engine releases 2019

Post by Graham Banks » Fri Aug 30, 2019 6:45 am

Mora 1.0.0

https://github.com/gonzaloarro/MORA-CHESS-ENGINE

Author : Gonzalo Arró (Argentina)

Protocol : UCI

ELO : 2100 - 2200
My email addresses:
gbanksnz at gmail.com
gbanksnz at yahoo.co.nz

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