Crystal 4.0
from the author
The release encompasses many changes including TT, extensions, LMR, LMP, etc, as well as all of the progress made upstream by the Stockfish team. I tried hard to reduce the general strength gap between Stockfish and Crystal without sacrificing tactics too much. The result is Crystal should be significantly stronger (relative to previous versions), and scale a fair bit better. It make take a little more time for some problems, but most stuff should continue to be resolved in a "reasonable" amount of time. As always, it remains a work in progress.
or Ipman's compiles
from the author
The release encompasses many changes including TT, extensions, LMR, LMP, etc, as well as all of the progress made upstream by the Stockfish team. I tried hard to reduce the general strength gap between Stockfish and Crystal without sacrificing tactics too much. The result is Crystal should be significantly stronger (relative to previous versions), and scale a fair bit better. It make take a little more time for some problems, but most stuff should continue to be resolved in a "reasonable" amount of time. As always, it remains a work in progress.
Code:
https://github.com/jhellis3/Stockfish/releases/tag/v4.0or Ipman's compiles
Code:
http://ipmanchess.yolasite.com/compiles.php