CorChess is a clone of Stockfish maintained for better performance on long time controls,
trying at least partially to fill the gap between regular tests and demands of correspondence players.

The first idea was to improve the following scalability of Stockfish 8
and from CorChess 2 I follow the idea from the following picture,
obtained by mathematical model for search tree efficiency.



Please contact me (ivan.ivec@gmail.com) about your experiences with CorChess,
or in the case that you want to be on the CorChess mailing list.

I use strong 2moves book.

Regression tests between CorChess 2 and Stockfish 220821 (Ryzen 7 3700X - 1 core)
Hash Time control
in seconds
#games Result Elo gain (± 2) Draw rate
1 MB 0.5+0.005 80000 12699-34076-33225 -95.15 41.5%
8 MB 5+0.05 25000 1293-3596-20111 -32.1 80.4%
64 MB 50+0.5 8000 98-244-7658 -6.34 95.7%
512 MB 500+5 2500 10-18-2472 -1.11 98.9%
900 MB 5000+50 800 0-0-800  0.0 100% 
Regression tests between CorChess 3 and Stockfish 061221 (Ryzen 7 3700X - 1 core)
900 MB 1200+12 1080 3-3-1074  0.0 99.4
Watch the longest games LIVE.

Motto: Alone I can nothing, with God I can everything (St. Vincent Pallotti).

Conclusion: There is no strict proof, but there is a hope that CorChess is better on long time controls.