PortaChess — Portable Electronic Chess
PortaChess was a dedicated portable electronic chess computer — one of the category of handheld and tabletop chess devices that were popular throughout the late 1970s and 1980s, offering chess opponents at various difficulty levels for players who wanted to practice or play without a human opponent. Electronic chess computers were among the earliest consumer applications of microprocessor technology, with products like the Chess Challenger (1977) pioneering the category. PortaChess brought chess computing capability to a genuinely portable format, making it practical to study and play chess anywhere — a forerunner of the chess engines now available on every smartphone.