The Commodore CHESSmate

The CHESSmate was demonstrated at the January 1978 Consumer Electronics Show in Las Vegas as a prototype in order to assess customer interest in the product. It was available for order at the June 1978 CES in Chicago and the first units, manufactured in Hong Kong, shipped later that year. It was a big seller in Germany from the beginning.
↫ Peter R. Jennings

There’s no way I can summarise this story.