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Stockfish 15121419 - new development version very strong chess engine UCI

Stockfish - chess engines UCI

Previous version chess engine Stockfish 

Author compilation - 
Leonid Pechenik 



Information on the compilation:
Timestamp: 1450116052 
Simplify time management and fix 'ponder on' bug 

Simplify time management code by removing hard stops for unchanging first root moves. 
Search is now stopped earlier at the end iteration if it did not have fail-lows at root. 

This simplification also fixes pondering bug. Ponder flag was true by default 
and cutechess-cli doesn't change it to false even though no pondering is possible. 
Fix the issue by setting the default value of 'Ponder' flag to false. 

10+0.1: 
ELO: 3.51 +-3.0 (95%) LOS: 99.0% 
Total: 20000 W: 3898 L: 3696 D: 12406 

40+0.4: 
ELO: 1.39 +-2.7 (95%) LOS: 84.7% 
Total: 20000 W: 3104 L: 3024 D: 13872 

60+0.06: 
LLR: 2.95 (-2.94,2.94) [-3.00,1.00] 
Total: 37231 W: 5333 L: 5236 D: 26662 

Stopped run at 100+1: 
LLR: 1.09 (-2.94,2.94) [-3.00,1.00] 
Total: 37253 W: 4862 L: 4856 D: 27535 

Resolves #523 
Fixes #510 


JCER=3256





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