Chess engine: Texel 1.08

-


Texel - UCI Chess engines
Rating CEDR=3188, Author - Peter Osterlund

v.1.08:
2023-06-10: Texel 1.08
New features:
Allow arbitrary hash table sizes up to 1TiB of memory.
Add "contempt" UCI parameter.
Add automatic contempt depending on opponent name.
Add support for 7 man syzygy tablebases.
Add "runcmd" Windows program. Useful for GUIs that don't allow specifying command line arguments to the engine.

Bug fixes:
Fix crash in Windows NUMA/CPU discovery code.
Fixed rare crash when running in cluster mode.
Changed default "ponder" UCI option value to false.

Time management:
More dynamic time management.
Better time allocation for ponder on games.

Search:
Use depth-dependent singular extension threshold.
Add tempo bonus.

Reduced strength:
Add MaxNPS UCI parameter.
Make reduced strength work for Threads > 1.
Add UCI_LimitStrength and UCI_Elo support, range -625 - 2540.

Infrastructure:
Use CMake instead of a handwritten Makefile.
Use Google Test framework instead of CUTE.

texelutil:
Use C++ threads instead of OpenMP.
Build texelutil with reduced functionality even if Armadillo and GSL libraries are not found.
Add a reverse move generator, "texelutil revmoves".
Improve "texelutil proofgame" for random positions.
Add "texelutil rndfen" to generate random positions.

Documentation:
Document how to estimate number of legal chess positions.
Document the Texel tablebase probing algorithm.


 Texel 1.08 download
All files (games, tables and engines) - download from page

Comments

Post a Comment

Popular posts from this blog

We already have the new Fritz 20 program - what does it look like and how does it work?

-
Image
The purchase process for the download version on the ChessBase website took only 5 minutes. Downloading the files from the cloud was even quicker. The installation itself, which involved five large files, took maybe 7 minutes, including restarting the system and entering the serial number I received upon purchase. The start image for Fritz 20 has a strange mosaic of colors; perhaps I'll get used to it. As you can see in the second screenshot, the program interface hasn't changed much; only the icons are different (we've been using Fritz 17 until now). It looks nice, but it's no major revolution. The next two screenshots show engine management and the installation of the UCI chess engine (here, Cataphract 1.1). As you can see, there are no changes. Screenshot no. 5 shows the analysis of some position by Fritz 20 engines. The changes are minimal - it is still very legible. Finally, on screen 6 we have the engine tournament table generated by Fritz 20 . I think it is sti...
Read more

Stockfish 250702 wins Android Chess Engines Tournament, 2025.08.03-04

-
Image
Stockfish 250702 won the tournament for new versions of chess engines for Android. Rubichess 20250606 JA came in second, and CorChess 250618 came in third. Further testing will begin today. 🕓 Time 3' 💻Tablet - Smasung Galaxy TAB S6 Lite, 4GB RAM 💾  90 games from the tournament download    🖬 GUI-Chess Tournament for Android, Country - Poland, City -  Malbork 💾 All CEDR games for Android  24.494 games download  (3')  P Engine CEDR Score (Tie) Chg +/-/= 1: Stockfish 250702 3598 15.0 / 18 112.75 -5 (+12 -0 =6) 2: Rubichess 20250606 JA 3350 14.0 / 18 103.50 +11 (+11 -1 =6) 3: CorChess 250618 3574 12.0 / 18 96.50 -32 (+9 -3 =6) 4: Saturn 1.3 JA 2400 12.0 / 18 84.00 +77 (+9 -3 =6) 5: Frozenight 7.00 JA 3218 10.5 / 18 77.00 -11 (+8 -5 =5) 6: Marvin 6.3.0 JA 3267 8.5 / 18 47.00 ...
Read more