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| 1K ZX Chess | |
|---|---|
 Box cover | |
| Designer(s) | David Horne |
| Platform(s) | Sinclair ZX81 |
| Release | 1982[1] |
| Genre(s) | Abstract strategy |
| Mode(s) | Single-player |
1K ZX Chess is a 1982 chess program for the unexpanded Sinclair ZX81.
- ^ Stokel-Walker, Chris (2015-09-20). "The bitter rivalry behind the world's smallest chess program". The Kernel. The Daily Dot. Archived from the original on 2015-09-23. Retrieved 2021-03-07.
In mid-1982, a small quarter-page advert appeared in a computer hobbyist magazine. For just £5 (about US$26.50 today), the ad's pixelated block text promised a computer chess program with "absolutely flicker-free display" and an opponent who would make its move on average just six seconds after yours. "Sensational 1K ZX 81 Chess," claimed the copy, and ignoring that today-inexplicable numerical assemblage, the important points are "sensational" and "chess."