Great effort! I gave this a couple of tries to figure it out.
I don't really see how the dice fit in. I read the page and what the intended goal is, but the boards don't align with any dice that I'm familiar with.
I also couldn't get past the 4th puzzle. Once I got the rook piece to the right side, moving down converts the piece to a pawn, but it can only move up reverting it back to a rook. I saw no way to change the piece at all with the way the player dice works.
It's a great effort, especially for a single dev when you're learning a new tool. I'd suggest sticking with it and improving your skills. The next time I'm sure it will only be a much better game!