# AttoChess: A 278-Byte Chess Program for 16-bit DOS

A developer has created AttoChess, a fully playable chess program for 16-bit x86 DOS systems that fits in just 278 bytes. The project showcases extreme code compression and optimization techniques in a tiny executable. While not a major geopolitical event, it highlights impressive software engineering ingenuity.

**Importance:** 2/5

## Sources

### Technology
- [Hacker News](https://nicholas-afk.github.io/AttoChess/) — Thu, 16 Jul 2026 18:33:24 +0000