Chess engine: Stockfish 19101715

Stockfish - UCI chess engine
Interesting compiled by Joost VandeVondele

The current bench is missing a position with high 50 moves rule counter, 
making most 'shuffle' tests based on 50mr > N seem non-functional. 
This patch adds one FEN with high 50mr counter to address this issue 
(taken from a recent tcec game). 

Four new FENs: 
- position with high 50mr counter 
- tactical position with many captures, checks, extensions, fails high/low 
- two losses by Stockfish in the S16 bonus games against Houdini 



Rating JCER=3386

Stockfish 19101715 - download from the site