New engine releases & news H2 2025

[Gabor Szots]

Someone had to start this.

[Frank Quisinsky]

Astra 6.0
https://github.com/h1me01/Astra
by Semih Oezalp, Austria

[Frank Quisinsky]

URL's of most of TOP-100 engines ... included are the directed download links to Jim's compiles!
Sorted by release date of engines ...

Note:
Start the *.htm file in download directory "main".

https://www.amateurschach.de/download/_overview.zip, 0,316Mb

[jdart]

Arasan 25.2 is available from https://www.arasanchess.org.

Changes in Arasan 25.2:
1) Updated network, trained with 12B positions, using factorization and cosine LR scheduler
2) Training script and training log commited to repo, along with the network
3) Some changes to selfplay utility. Outputs W/L/D statistics now.
4) Fixes to non-SIMD build
5) Fixes for AVX512 build
6) Use -DSIMD, -DSSE2 for GUI build
7) Fixes for position learning. Rename "Learning file name" option to "Learning file."
8) use -path for xboard BookPath option
9) Fixes for loading/storing PGN files from the GUI
10) Fixes for setting ARASAN_VERSION macro in the build
11) Fix "bench" command so if given on the command line, it does complete initialization
12) Implement finny tables to speed up eval
13) Changes to book selection logic. Book will play a wider variety of moves by default.

Test results against 25.1, 2:0+1 time control:

Results of Arasan-Test vs Arasan-Base (2+1, 1t, 32MB, 8moves_v3.pgn):
Elo: 28.44 +/- 5.98, nElo: 59.38 +/- 12.43
LOS: 100.00 %, DrawRatio: 60.87 %, PairsRatio: 2.12
Games: 3000, Wins: 513, Losses: 268, Draws: 2219, Points: 1622.5 (54.08 %)
Ptnml(0-2): [6, 182, 913, 359, 40], WL/DD Ratio: 0.09

[Chacal X]

I would like to congratulate you for reactivating this channel, I know that many new engines will be published.
Thank you very much to everyone involved!

[schahmatist]

Uralochka 3.42dev14 is uploaded.

https://gitlab.com/freemanzlat/uralochka3/-/artifacts

Thank you to the author!

[Frank Quisinsky]

Clarity 8.0.0
https://github.com/Vast342/Clarity
by Joseph Pasfield, USA

[Werner]

Clarity 8.0.0
https://github.com/Vast342/Clarity
by Joseph Pasfield, USA

?
uci
id name Clarity V7.2.0
id author Vast

[Frank Quisinsky]

Werner,

can nothing do with your information.
Name of author is right for me, also the new number of version.
Available since 7 hours.

But perhaps you mean the outputs during the installation ... ID ?!
Different engines give wrong version information or the nick from authors name.
I think that is cool for the younger generation (nick?).

Best
Frank

[Werner]

Now Clarity has got an update and displays the correct number: 8.0.0