Eubos 4.1 - new version chess engine

Eubos - a basic Java chess engine, written for kicks. Uses jcpi for the UCI protocol parts. Kind of weak, doesn't evaluate for king safety, for example. Now uses transpostion hashing, but because it runs in the Java VM on a bog standard PC, doesn't search very deeply (around 100K Nodes/s, though this is actually quite hard to evaluate due to the hashing). 

Author: Chris Bolt Rating CEDR=2493

Eubos 4.1 what's new?

All the effort for this release was spent developing the training infrastructure for improving neural nets by capturing positions for supervised learning.

I have a new private python repository, which I may make public, which is all about preprocessing bullet format text files to guarantee uniqueness of FENs, remove repetition draws etc. Then I have another Eubos-derived Jar file for rescoring these positions with searches to a greater depth utilising successively stronger nets.

This toolchain was used to deliver 102 million unique positions, searched to depth 5 and 6 plies, with pruning and reductions on. That was used to train the net included in this release, which is 50 Elo stronger than Eubos v4.0.

Eubos 3.9 JA vs other engines:

Pioneer 0.3.2 JA	4/4	+4	4 Games
Mufasa 0.2.1 JA	3.5/4	+3	4 Games
Integral 7.0.0	0/4	-4	4 Games
HypnoS ++ 1.02	0/4	-4	4 Games
GOOB 1.8.9 JA	0/4	-4	4 Games
Peacekeeper 3.01 JA	0/4	-4	4 Games
Odonata 1.0.0 JA	0/4	-4	4 Games
Obsidian 15.03 SE	0/4	-4	4 Games
Killfish PB 090225	0/4	-4	4 Games
Midnight 9 JA	0/4	-4	4 Games
Fatalii 0.9.0	0/4	-4	4 Games
Beef 0.3.6 JA	0/3	-3	3 Games
Bitbit 1.3	2/2	+2	2 Games
Rustic Alpha 3.05 JA	2/2	+2	2 Games
Reggz 0.6.0	2/2	+2	2 Games
Deep Blunder 1.2.0 JA	2/2	+2	2 Games
Jester 0.85 JA	2/2	+2	2 Games
Sloth 2.0 JA	1.5/2	+1	2 Games
100 Elo Chess Engine	1.5/2	+1	2 Games
Fatalii 0.9.0 JA	1/2	+0	2 Games
Stro4k 3.0 JA	1/2	+0	2 Games

Eubos 4.1 download