Hey, I'm a big fan of your past work. there seems to be a bug with the tutorial where the Queen and Rook stay on the board after the tutorial has ended.
This is fixed now. It helped me find a few other minor things. I'd like to acknowledge you in the credits. It was significant If you'd rather not be acknowledged, no problem, but if you would, how would you like to be referenced?
Thanks again for the kind words and bug report!