Crafty Chess

Crafty Chess is Rolf Exner's Macintosh port of Bob Hyatt's free Crafty engine, bringing one of the strongest open chess programs of its era to System 7 with native AppleEvent support. Distributed as a fat binary, it plays comfortably on both 68k and PowerPC Macs.

The Crafty Engine

Crafty was written by Bob Hyatt at the University of Alabama at Birmingham, originally targeting Unix and DOS. It is the open successor to the Cray Blitz program and remains a reference engine for serious computer chess work.

This Mac Release

This 11.13 release supersedes Lloyd Lim's earlier port (based on Crafty 9.30), which was driven through a text console. Exner's build adds AppleEvent integration so it can be hosted by graphical front-ends such as ExaChess Lite.

Behavior on Mac

Compared to the older port, this version starts faster, behaves better as a background task when other applications are running, and exposes additional Crafty commands for analysis and tournament use.

Distribution

Released as a fat binary so the same archive runs natively on 680x0 and PowerPC Macintoshes; pair it with an AppleEvent-aware GUI for the full graphical experience.