New chess engine: Integral v2

 

The first public release of Integral

Author - Aron Petkovski

v2:

Estimated Elo Rating

+207 elo at STC over Integral v1

Score of ./integral.exe vs ./integral_x86_64_bmi2.exe: 157 - 26 - 62  [0.767] 245

...      ./integral.exe playing White: 84 - 10 - 29  [0.801] 123

...      ./integral.exe playing Black: 73 - 16 - 33  [0.734] 122

...      White vs Black: 100 - 83 - 62  [0.535] 245

Elo difference: 207.3 +/- 41.7, LOS: 100.0 %, DrawRatio: 25.3 %

SPRT: llr 2.95 (100.1%), lbound -2.94, ubound 2.94 - H1 was accepted

Credits

Everyone in the Stockfish Discord who were extremely helpful and kind

Andrew Grant's paper on Texel Tuning and Weiss' implementation of it

Alexandria for the time management scaling factors

Integral v1 results:

Eubos 3.5	2/2	+2	2 Games
OpenTal 1.1 JA	2/2	+2	2 Games
Floyd 0.9 JA	2/2	+2	2 Games
Throttle 3.0	2/2	+2	2 Games
Chessrikus 1.466 JA	2/2	+2	2 Games
Yakka 1.0	1.5/2	+1	2 Games
Twisted Logic 20100815 JA	1.5/2	+1	2 Games
Kobra 1.2	1/2	+0	2 Games
Flounder 0.5.0.2	0.5/2	-1	2 Games
Winter 3.10a JA	0.5/2	-1	2 Games
Weiawaga 5.0 JA	0.5/2	-1	2 Games
Critter 1.6a	0.5/2	-1	2 Games
Pirarucu 3.3.5 JA	0/2	-2	2 Games
Toga IV 1.1 JA	0/2	-2	2 Games
Uralochka 3.41a JA	0/2	-2	2 Games
Rodent NN JA	0/2	-2	2 Games
Tucano 11.19 JA	0/2	-2	2 Games

Integral v2 download