Thank you! After I finished the gameplay and AI, I was told that there was a way to win the game without giving a chance to AI. I would need to change the whole game's idea to avoid this situation, so I decided to keep this as a single puzzle game.
I don't know if you've heard if, but I'm the developer of Pawn of the Dead, which has randomized chess puzzles with all pieces. It doesn't have a "single hit" mechanic, though.
(Kudos to your team, too)