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Saturday, April 9, 2016

Stockfish 16040820a_AlainSavard - best chess engine

Stockfish - chess engines UCI

Previous version chess engine Stockfish 

Author compilation - 
Alain Savard 

Information on the compilation:
Timestamp: 1460139175 

Backward simplication 

On top of the usual conditions 
a) some opponent in front (but no lever) 
b) some neighbours (in front) (but no neighbour behind or same rank) 
c) < rank_5 

to find out if a pawn is backward we look at the squares in front of this pawn to reach the same rank as the next neighbour. 

In current master, a pawn is backward if any of those squares is controlled by an enemy pawn on an adjacent file 

In this version, a pawn is ALSO backward if any of those squares is occupied by an enemy pawn. 

STC: 
http://tests.stockfishchess.org/tests/view/56fe7efd0ebc59301a3541f1 
LLR: 2.95 (-2.94,2.94) [-3.00,1.00] 
Total: 19051 W: 3557 L: 3433 D: 12061 

LTC: 
http://tests.stockfishchess.org/tests/view/56febc2d0ebc59301a354209 
LLR: 2.95 (-2.94,2.94) [-3.00,1.00] 
Total: 40810 W: 5619 L: 5526 D: 29665 

Bench: 7525245 

Resolves #614 

JCER=3247



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