Since you’re here...

We hope you will consider supporting us today. We need your support to continue to exist, because good entries are more and more work time. Every reader contribution, however big or small, is so valuable. Support "Chess Engines Diary" even a small amount– and it only takes a minute. Thank you.
============================== My email: jotes@go2.pl



Chess engine: Leorik 3.1.3 Dev JA (for Windows and Linux)

on

Leorik - UCI chess engine
Author-Thomas Jahn Rating Chess Engines Diary CEDR=2998

v.3.1:
Leorik 3.1 uses .Net 9 and has a stronger NNUE evaluation and an improved search.
The NNUE improvements include:

Larger network: Hidden-layer size increased from 256 to 640 neurons.
SCReLU Activation: replaces CReLU for better accuracy.
Trained from scratch: Training data collected from 19 generations of selfplay, starting with a zero-initialized network and high initial temperature.
New Network: 640HL-S-5288M-Tmix-Q5-v19 trained on 5.2 billion positions, gathered across generation 13 through 19.
The Search improvements include:

Correction History: static eval adjusted by search results on positions with similar features. (Compares Pawn, Knight|Bishop and Queen|Rook bitmasks) Wiki
Aggressive Late Move Reduction: Late quiet moves that do not improve the static eval are getting reduced by 4 instead of the usual 2.
Dynamic Late-Move Threshold: The history threshold that identifies quiet moves as 'late' now scales proportionally with the number of played moves.
Reverse-Futility-Pruning: Uses a dynamic margin computed from NMP statistics.

Leorik 3.0 vs other engines: 
Booot 7.32.5/10-510 games
Alexandria 6.02/10-610 games
Leptir 0702241/10-810 games
ShashChess 34.61/10-810 games
CorChess 202402091/10-810 games
Eman 9.901/10-810 games
Caissa 1.171/8-68 games
Brainlearn 270.5/8-78 games
Reckless 0.5.05/7+37 games
Cheng 4.463/7-17 games
Lizard 10.21/7-57 games
TDFA 1.1.06/6+66 games
Odonata 0.8.05.5/6+56 games
DanaSah 9.12.5/6-16 games
Clarity 5.0.02/6-26 games
Midnight 92/6-26 games
Kookaburra 2.001/6-46 games
SF-PRO 16.02.20241/6-46 games
Tenax 0.9.50.5/6-56 games
Stockfish 202402140.5/6-56 games
Altair 7.0.00/6-66 games


Jim Ablett compiles:
github:https://github.com/lithander/Leorik/releases/

Comments

Post a Comment