The PC version was a rewrite in C based on the 6502 assembly version, which also went into Novag's dedicated Constellation some years before, as mentioned by Larry Kaufman in the USOCCC 1986 tournament report : CM 2000 was released for various 8- and 16-bit home computer platforms based on 6502, Z80, 680 processors, such as Amiga, Apple II, Atari 8-bit, Atari ST, ZX Spectrum, Commodore 64, Amstrad CPC, Macintosh, and DOS PCs.
Duffy, with a chess engine by David Kittinger, loosely based on M圜hess II published by the same vendor since 1984. Chessmaster was first released as Chessmaster 2000 in 1986 by Software Toolworks, Inc., a software and computer game publisher located in Los Angeles, co-developed by its founder Walt Bilofsky and Michael E.
