Competitive Analysis

Fidelity Phantom 6100

Allowed a player to play against a bot
Bot would magnetically move pieces
Moved pieces off the board when captured
Able to reset the board by itself
Required player to press down pieces before and after moving
Was produced in the late 80s, no longer being produced, currently sold on ebay for $650 or more
Video of Fidelity Phantom 6100

Various robots that are able to move chess pieces
All examples found had built in chess playing, so it was only for play against a computer
A ~$100 robot made by a high school student
A robot that is able to play blitz chess