Houdini understands endings rather well
which engine strongest at endings?
In the Rybka forums I read occasional comments about how Rybka 4 makes the unexpected and non-engine-like good endgame move.
edit: But not for Mac yet...something in the future when they update.
edit2: "Since microwine 0.5 an experimental port for Mac OS X is also included."
So if you don't mind linux, Rybka will run on a mac.
I plan to study endings by playing positions from Dvoretsky's Endgame Manual against my Mac. Is one of the engines available (for OS X) much stronger than the others at endings specifically?
Thanks.