Rodent V 1.1 - new version chess engine



Rodent - UCI chess engine, Author = Pawel Koziol (Poland) & Bernhard C. Maerz (Germany)
Rating Chess Engines Diary CEDR=2978

Rodent V 1.1 what's new?
This is an unusually fast second release, but we have a few good reasons to do it:

two solid algorithm improvements (new history gravity formula and scaling NNUE eval against remaining material)
discovering that a NNUE adjusted by training on Anand's games is better than default
considerably reducing memory footprint
adding UCI_Elo option, so that you can play against a weaker versions of personalities
fixing NNUE access for personalities
adding user manual
Rodent gained about 70 Elo in a week, and should be at 3470 CCRL at short time control.

Test against Rodent 1.0:

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Results of RodentTest vs RodentBase (40+0.4, 1t, 32MB, UHO_Lichess_4852_v1.epd):
Elo: 78.45 +/- 15.33, nElo: 144.16 +/- 27.22
LOS: 100.00 %, DrawRatio: 42.17 %, PairsRatio: 4.84
Games: 626, Wins: 231, Losses: 92, Draws: 303, Points: 382.5 (61.10 %)
Ptnml(0-2): [0, 31, 132, 130, 20], WL/DD Ratio: 0.86
LLR: 2.95 (100.1%) (-2.94, 2.94) [0.00, 5.00]
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SPRT ([0.00, 5.00]) completed - H1 was accepted
Rodent Asylum - Test of NNUE personalities

Rank Name                          Elo     +/-   Games   Score    Draw 
   1 Rodent V 1.1 Anand            100       9    3000   64.1%   44.0% 
   2 Rodent V 1.1 Nakamura         -26       9    3000   46.3%   48.3% 
   3 Rodent V 1.1                  -35       9    3000   45.1%   49.2% 
   4 Rodent V 1.1 Tal              -38       9    3000   44.6%   47.9% 

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