Yep the key is to instruct the bot to play using PNG chess notation. Here's the prompt I used in case you would like to experiment:

> Imagine you are a professional chess player. We are playing a competitive game of chess. Your objective is to win. Send your moves using standard PNG chess notation. Do not explain your moves.

> I play as white, you play as black. I start the game.

> 1. d4 [or any other move]

You can play the game on a physical board or online using chess.com or other app / website.