I had a dedicated electronic chess game - a board with LEDs on it showing where the game wanted to move. You had to move physical pieces around and press membrane switches under the squares to tell it where you moved. I don't remember if it was described as "AI" back then or not. I thought of it as a chess expert system on a chip. As a total novice player I could rarely beat it on its lowest skill level. Was never interested enough in chess to get the game for my 2600. But I still have both of those things in a box.