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Chess engine: Protej 0.6.4

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Protej - UCI chess engine, Author - Alex Brunetti
Rating CEDR=2848

Protej progress:
version    CEDR games %
Protej 0.6.2 
2848 133 39.5
Protej 0.6.3
2746 396 42.2
Protej 0.58a
2205 42 71.2


v.0.6.4:
Functional changes:
Aggressive reductions: highly attacking playing style (estimated gain +40)
Code cleaning, optimizations and simplifications (+25)
Syzygy online function updated: when the position is draw, instead of playing a random move now drawing ones are analyzed shortly (+0)
Specific endgame functions for more positions (+10)
Evaluation tuning (+15)

Non functional changes:
Winboard mode dropped
Bigger chessboard and new "eighties" piece design: playing on the terminal is much easier
Eval board dropped
Improvements in thinking output
New positions in bench command
Help command shows also compile time
Current hash sizes are shown with board command
Ini file, to avoid using UCI options and to configure some other parameters
Hash default is now 128 MB
New dynamic scores function; 0.6.3 scores were quite crazy and out of control
Command line actions:
   b[ench]: runs the benchamrk
   go <seconds> [fen]: analyzes the given position; default is start position
   p[erft] <depth> [fen]: runs perft for the given position; default is start position
   v[iew] <fen>: shows a given position; default is start position
   r[andom] <# of positions>: generates random realistic fen positions

STC Total: 6000 W: 2502 L: 2446 D: 1052 Elo: +121; pool of 20 engines, average rating 2793, TC=4"+0.1, Little Blitzer testing framework

STC Total: 20000 W: 10653 L: 5199 D:4148 Elo: +120; selfplay vs Protej 0.6.3, TC=4"+0.1, Little Blitzer testing framework

LTC Total: 5036 W: 1914 L: 1813 D: 1309 Elo (BRUCE): 2863; pool of 22 engines, TC=1'+1", cutechess-cli testing framework

Individual statistics:Protej 0.6.1 - 64 games (+ 28,= 10,- 26), 51.6 %
GreKo 2021.08 NNUE            :   2 (+  0,=  0,-  2),  0.0 %
Barbarossa 0.6.0              :   2 (+  1,=  1,-  0), 75.0 %
Stockfish 14.1                :   2 (+  0,=  0,-  2),  0.0 %
Fisherov 0.98i                :   2 (+  0,=  0,-  2),  0.0 %
Xoron b196                    :   2 (+  2,=  0,-  0), 100.0 %
Alouette 0.1.4                :   2 (+  2,=  0,-  0), 100.0 %
Kayra 1.1                     :   2 (+  0,=  0,-  2),  0.0 %
ChessKISS 1.8                 :   2 (+  2,=  0,-  0), 100.0 %
Lc0 0.28.2                    :   2 (+  0,=  0,-  2),  0.0 %
Fritz 15                      :   2 (+  0,=  0,-  2),  0.0 %
Francesca 0.31a               :   2 (+  0,=  0,-  2),  0.0 %
Weiawaga 4.0                  :   2 (+  2,=  0,-  0), 100.0 %
Devel 4.0.2.3                 :   2 (+  0,=  1,-  1), 25.0 %
Popochin 4.3                  :   2 (+  1,=  1,-  0), 75.0 %
Bagatur 3.1                   :   2 (+  2,=  0,-  0), 100.0 %
Princhess 0.6.0               :   2 (+  2,=  0,-  0), 100.0 %
Prophet 4.1                   :   2 (+  1,=  1,-  0), 75.0 %
Myrddin 0.89                  :   2 (+  1,=  1,-  0), 75.0 %
Cheese 3.0.1                  :   2 (+  0,=  2,-  0), 50.0 %
Black Marlin 4.0              :   2 (+  1,=  0,-  1), 50.0 %
Combusken 2.0.0               :   2 (+  0,=  0,-  2),  0.0 %
Rebel 14 NNUE                 :   2 (+  0,=  0,-  2),  0.0 %
Eubos 2.6                     :   2 (+  2,=  0,-  0), 100.0 %
Little Goliath 3.15           :   2 (+  0,=  1,-  1), 25.0 %
Velvet 3.1.3                  :   2 (+  0,=  1,-  1), 25.0 %
Stockfish 250122              :   2 (+  0,=  0,-  2),  0.0 %
Clover 3.0                    :   2 (+  0,=  1,-  1), 25.0 %
Anka 0.6.3                    :   2 (+  2,=  0,-  0), 100.0 %
Belofte 2.1.5                 :   2 (+  2,=  0,-  0), 100.0 %
Cheese 3.0                    :   2 (+  1,=  0,-  1), 50.0 %
Tantabus 1.0.2                :   2 (+  2,=  0,-  0), 100.0 %
Sachy 0.2.05                  :   2 (+  2,=  0,-  0), 100.0 %


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