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============================== My email: jotes@go2.pl



Chess engine: Stockfish 19092309

on
Stockfish - UCI chess engine
Interesting compiled by xoto10

 Encourage rook lift to third rank 
This change to the Rook psqt encourages rook lifts to the third rank 
on the two center files. 

 STC 10+0.1 th 1 : 
LLR: 2.96 (-2.94,2.94) [0.00,4.00] 
Total: 40654 W: 9028 L: 8704 D: 22922 Elo +2.77

LTC 60+0.6 th 1 : 
LLR: 2.96 (-2.94,2.94) [0.00,4.00] 
Total: 56963 W: 9530 L: 9196 D: 38237 Elo +2.04

Thanks to @snicolet for mentioning that Komodo does this a lot and Stockfish doesn't, which gave me the idea for this patch, and to @noobpwnftw for providing cores to fishtest which allowed very quick testing. 

 Future work: perhaps this can be refined somehow to encourage this on other files, my attempts have failed. 



Rating JCER=3400

 Stockfish 19092309 - download from the site


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