When adding Chess for the ZX Spectrum, three releases are shown.
One is for the version developed by Micro Gen and Psion, and published by Sinclair Research.
The other two are for Masterchess developed by icon design and published by Mastertronic.
These are not the same game, as can be seen in the screenshots for each:
I think the confusion comes about because Micro Gen did also publish their version of the game on their own label under the name Masterchess (apparently only on the Amstrad).
Unfortunately Chess is such a common game that lots of companies have released different games using similar titles!