i certainly recommend that users of previous versions now use 2.0.
any fire.cfg file or saved UCI option from a previous version should be 100% compatible with 2.0
there likely no big ELO increase, but perhaps a small one, and several major issues
have been resolved, largest of which was the occasional Playchess.com crashing.
now supports up to 64 cores/threads
occasional crash fixed
code improvements, bitwise optimizations
SEE piece/capture values are no longer constant entities
fire.cfg incorrect default value for Prune_Pawn fixed: Prune_pawn = 160
Fire now recognizes whether or not the system supports hardware popcount
and/or large pages, and self-configures itself accordingly
some code cleanup, formatting, and re-organization
more complete Log implementation
UCI clear hash button added
at the moment this is about as good as I can get it...
thanks for welcoming me on your great forum!