a chess program by Chris A. Thornton for the MSX Z80 based home computer architecture. Ultra Chess was released in 1985 by Aackosoft. The chess program was a re-release of Thornton's Spectrum Chess.
- Ultra Chess by Aackosoft | MSX Resource Center by Folkert van Heusden, February 22, 2017
- Ultra Chess (1985, MSX, Aackosoft) | Generation MSX