Microchess 1.5 running on a Radio Shack TRS-80 microcomputer Microchess 1.5 running on a Radio Shack TRS-80 microcomputer
1976
Courtesy of Peter Jennings
L062302023

Microchess, by Peter Jennings, was the first commercially-available microcomputer-based chess program. It was first introduced in a small advertisement for the KIM-1 user magazine, known as KIM-1 User Notes.