Superstar 28K
SciSys Superstar 28K 4  12 x 12
Superstar 28K 2 20x21

In May 1983 Scisys decided to challenge the newly released Novag Constellation for the highly competitive top end market with an all new chess computer to be programmed by Julio Kaplan . Midway through its development it was entered in the World Microcomputer Chess Championships held at Budapest in October 1983. The intention was to compete anonymously during a period of rapid program development. The organisers though used the name Superstar X to Scisys’s dismay. No doubt they would have been happier if Superstar X had finished better than 13th. This sounds bad but the Superstar X did finish equal with the Novag Constellation and Fidelity Sensory 9, on 3 points from 7 rounds.
To compete for the lucrative Christmas market the Superstar was hurriedly released soon after.
The Superstar turned out to be a little weaker than the Constellation, Elo 1530 compared with Elo 1597 (Wiki). Also the Constellation had a long head start and sold in large numbers.
The strength of the Superstar was at longer time intervals with better than average endgame play. It was upgradeable and accepted a version of the KSO openings module. One nice feature it had was a replay function which allowed the user to step backwards and forwards through a game. The design, as in the case of the Mark V and the Explorer, was the product of Ian Sinclair’s design studio.

SciSys Superstar 28K 5  15 x 15


Tabletop - Touch Sensory


6502A cpu   2 MHz   8 bit



Opening Book

2,500 ply


8V   300mA   positive centre
or  6 x C batteries


37.0 x 24.4 x 3.2 cm


20 x 20 cm

King Height

4.8 cm

free counters