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Different engines

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Most notable changes were adjustment to move scoring, selection sort only for the next move,
better null move pruning conditions as well as better lmr reduction and some other small speedups.

https://github.com/Disservin/Smallbrain/releases/tag/1.1.0

Smallbrain 1.1

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https://github.com/expo-dev/expositor

Expositor 2WN29
https://github.com/expo-dev/expositor/releases

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Igel 3.1.0

https://github.com/vshcherbyna/igel/releases/tag/3.1.0

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Polyfish 20220602

https://github.com/khalid-a-omar/Polyfish/releases/tag/20220602

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The new version of the Uralochka 3.36c engine (Windiws 64bit & Linux 64bit) increases the strength of the game by 60-70 points!

http://www.sdchess.ru/russian_engines.htm

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https://github.com/PGG106/Alexandria/releases/tag/v1.0.0

Alexandria 1.0

First stable release of Alexandria chess engine. features a better Qsearch and a better LMR compared to the previous version, it also gained roughly 100 ELO

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Crystal 060622 Tactical.

https://workupload.com/file/cW4adT3kULb

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Berserk 9: https://github.com/jhonnold/berserk/releases/tag/9

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There are new faster compiles available .

https://github.com/jhonnold/berserk/releases

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Polyfish 20220620


https://github.com/khalid-a-omar/Polyfish/releases/tag/20220620

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Stockfish and CorChess development builds compiled by I. Ivec

June 20, 2022
http://chess.ultimaiq.net/stockfish.html

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odonata v0.6.2

https://github.com/akanalytics/odonata/releases

Last edited by lisandr on Sat Jun 25, 2022 1:55 am; edited 1 time in total

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Smallbrain v4.0

https://github.com/Disservin/Smallbrain/releases

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Alexandria 0.9 - The first stable and practically playable release of Alexandria.

Alexandria 1.0 - First stable release of the Alexandria chess engine has a better Qsearch and a better LMR compared to the previous version, it also got around 100 ELO.

Alexandria 1.1 - Alexandria now has a resizable hash table and the release is now compiled with gcc (about 10 elo in total).

Alexandria 2.0 - This is the first release of Alexandria to have NNUE for the evaluation part, many thanks to Luecx who made this possible.
This version plays around 250-300 Elo stronger than Alexandria 1.1 and should sit comfortably around 2800 Elo, and libraries that weren't statically included were added to improve compatibility.
Score Alexandria-NNUE vs Alexandria: 129 - 3 - 68 [0.815]
... Alexandria-NNUE plays white: 67 - 1 - 32 [0.830] 100
... Alexandria-NNUE plays black: 62 - 2 - 36 [0.800] ] 100
... White vs Black: 69 - 63 - 68 [0.515] 200
Elo Difference: 257.6 +/- 41.3, LOS: 100.0%, DrawRatio: 34.0%
200 out of 200 games completed.

Alexandria 2.1- Default engine network changed to 768->256->1 structure, this is probably the last eval change for a while and gives around 60 elo so it's getting its own release, some looking for a change is coming up to use this new and better one assessment.
Score Alexandria-new against Alexandria-old: 264 - 105 - 631 [0.580]
... Alexandria-new plays with white: 149 - 45 - 306 [0.604] 500
... Alexandria-new plays with black: 115 - 60 - 325 [ 0.555] 500
... White vs Black: 209 - 160 - 631 [0.524] 1000
Elo Difference: 55.7 +/- 12.9, LOS: 100.0%, DrawRatio: 63.1%
1000 out of 1000 games completed .

Alexandria 2.2 - What has changed:

Most importantly, a bug in the detection of repetitions has been fixed, rfp has been introduced into the search and a small code cleaning has been done.
Overall, thanks to the bug fix and rfp, this version gets a staggering 60-80 Elo on its own compared to 2.1 and should get 30-40 Elo against other engines.

Code:


Score of Alexandria vs Alexandria-old: 96 - 28 - 176 [0.613]
...      Alexandria playing White: 58 - 12 - 80  [0.653] 150
...      Alexandria playing Black: 38 - 16 - 96  [0.573] 150
...      White vs Black: 74 - 50 - 176  [0.540] 300
Elo difference: 80.1 +/- 24.9, LOS: 100.0 %, DrawRatio: 58.7 %
300 of 300 games finished.


Download all versions:
https://github.com/PGG106/Alexandria/releases

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Blunder 8.0.0.

https://github.com/algerbrex/blunder/releases

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Devre 3.0

https://github.com/OmerFarukTutkun/Devre/releases

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