Wow, what a wild difference from the ancient game of 21st-century chess! I really like the idea of taking a two-player game board and reinventing it to a single player solitaire-type game like this, and the rules you devised definitely seem interesting enough to lend themselves to replayabiity.
Unfortunately I had trouble keeping track of all the rules and the ways points could be scored, so perhaps this game is a bit over my head :). Even still, I found the game playable since you provided hints by highlighting squares and gave the different overlay options to show how the pieces work. The UI feels nicely polished, and the high score list is a nice touch too!
This is a fun interpretation of the theme and I think you did a great job! I don’t think I have any hope of getting a high score but maybe I will try again later :)