Stockfish 16011823_lucasart - new development version very strong chess engine UCI

Stockfish - chess engines UCI

Previous version chess engine Stockfish 

Author compilation - 

Information on the compilation:
Timestamp: 1453155702 

Retire RootNode template 

There is no reason to compile 3 different copies of search(). PV nodes are on the cold path, and PvNode is a template parameter, so there is no cost in computing: 

const bool RootNode = PvNode && (ss-1)->ply == 0; 

And this simplifies code a tiny bit as well. 

Speed impact is negligible on my machine (i7-3770k, linux 4.2, gcc 5.2): 

nps +/- 
test 2378605 3118 
master 2383128 2793 
diff -4523 2746 

Bench: 7751425 

No functional change. 

Resolves #568  



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