Eleanor 2.0 - new version chess engine

Eleanor - a chess engine written in C++

Author: Mark (rektdie)

Eleanor Chess Engine

Eleanor 2.0 what's new?

New Neural Net

Increased the HL size to 1024 from 256 which resulted in ~440 elo tested on STC.

Also datagen produces way better data. (will improve even further)

New arch being: (768 -> 1024)x2 -> 1x8

Tests of this engine version:

Tested against Stash v36.0

LTC - 8 moves:

Elo   | -9.87 +- 10.86 (95%)

Conf  | 40.0+0.40s Threads=1 Hash=64MB

Games | N: 2008 W: 526 L: 583 D: 899

Penta | [71, 262, 390, 215, 66]

Eleanor 1.0 JA vs other engines:

Beast 3.2.2	4/4	+4	4 Games
Aku 2025.30.5 JA	1/3	-1	3 Games
Olithink 5.11.4	2/2	+2	2 Games
Belofte 2.1.8 JA	2/2	+2	2 Games
Tcheran 5.1	1.5/2	+1	2 Games
Meltdown 1.7	1/2	+0	2 Games
CalvinChess 6.1.1 JA	0.5/2	-1	2 Games
Stockfish dev-20250602	0/2	-2	2 Games
Bagatur 5.2a JA	0/2	-2	2 Games
Berserk 20250606 JA	0/2	-2	2 Games
SF PB 030625	0/2	-2	2 Games
RukChess 4.1.0	0/2	-2	2 Games
Clover 8.1.16	0/2	-2	2 Games
RubiChess 20250520	0/2	-2	2 Games
Obsidian dev-16.07	0/2	-2	2 Games
Stockfish 20241208	0/2	-2	2 Games
PlentyChess 6.0.0	0/2	-2	2 Games

Eleanor 2.0 download