Of course one of the games I now have is "Video Chess" which was designed for the Atari 2600. As with most chess programs I find in the wild, I gave it a workout on the easiest level, and I must say that it is better than most. However I am a few moves away from checkmating it (taking a break to type this), in a game that has probably lasted around 25 moves.
There are two interesting artefacts from that era that are apparent in the modern version. Firstly the user input is really klunky, as you have to move a cursor around using a simulated joystick, and use the