That's soooo cool and enjoyable game!!! I downloaded it, and I can definitely see myself playing it in my free time even after the game jam! As a chess enjoyer, it was a great surprise to see such a good implementation of chess combined with the jam topic. The bot can also be quite challenging — it took me a few attempts to finally beat it. The visual representation is clear and looks polished.
One thing that confused me a little was the pawn promotion. The choice screen looked a bit strange, where each piece was shown three times and everything looked kind of stretched. Also, during the game, at one point the bot stopped buying any pieces at all, even with a normal amount of time left. It was just moving its king and eventually losing.
Overall, I really liked this game. It feels complete, and the idea is sick! Congrats on such a great submission!