Arthur Benemann has been working on a microcontroller chess game using a Microchip DSPIC33FJ128MC804-PT. He writes:
I would like to share my latest project, the picChess, its a Microcontroller Chess game. It has and VGA video interface, audio, Keyboard connection, and even a AI to play against the Microcontroller.
The project, including source and schematic can be found in this Instructable.
Via the contact form.