My favorite is still Peter Jennings' Micro-Chess, from 1976, which ran on a KIM-1 (6502) machine and used 1.1K of RAM. http://users.telenet.be/kim1-6502/microc

My favorite is still Peter Jennings' Micro-Chess, from 1976, which ran on a KIM-1 (6502) machine and used 1.1K of RAM. http://users.telenet.be/kim1-6502/microchess/microchess.html http://users.telenet.be/kim1-6502/microchess/microchess.html I had the PET 2001 version (which ran in 7K) and played pretty competent chess, all things considered-- disassembling that, back in the day, was a major boost to my software development education.