Parker Chess

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Parker Chess, (Chess) a commercially available chess program developed by Philidor Software aka Intelligent Software, manufactured by Parker Brothers in 1983 . The program evolved from Philidor Software's development chess program dubbed Philidor and already applied an early version of the SEX Algorithm, the SX Algorithm, using fractional ply increments, extensions and reductions .

=IBM PC= The IBM PC version of Parker Chess was written in 8086 assembly and was the work of David Broughton .

=Atari 8-bit= In 1983, Parker Brothers further purchased Chess as cartridge system for Atari 8-bit home computers, written in 6502 assembly, likely with Intelligent's 6502 expert Mark Taylor involved.

=Forum Posts=
 * A Test Game with Parker Chess on an Atari by The Spacious Mind, Hiarcs Forum, September 13, 2014
 * Philidor/Parker Chess for PC (1983) by Ben Redic Fy Fazan, HIARCS Forum, March 29, 2020

=External Links=

Parker Chess

 * Chess Computers - The UK Story from Chess Computer UK by Mike Watters
 * Broughton, David from Schachcomputer.info Wiki, Interview with David Broughton, February 2006 by 'hard
 * Atari 400 800 XL XE Chess : scans, dump, download, screenshots, ads, videos, catalog, instructions, roms

Parker Brothers

 * Parker Brothers from Wikipedia
 * George Swinnerton Parker from Wikipedia
 * Camelot (board game) from Wikipedia

=References= Up one Level