Eubos 4.2 - 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 4.2 what's new?

Retrained a new net based on the same training set as used in Eubos v4.1, but searched with the v4.1 neural net to a depth of at least 5ply and at least 25KNodes. 102.7M positions were used. The training data was updated on a grid of Raspberry Pis, so it took quite some time.

Also in this release I reworked the code for running an inference into iterative updates of the accumulators. This has greatly improved the speed of Eubos.

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 4.2 download