I genuinely don’t know what I’m meant to do. I saw the instructions in your previous comments, but even then, there’s nothing that I can actually do. Pushing the king up, down, or left leads to the king being in check (and losing). Pushing the king to the right seems like it could be the correct answer, but it appears that diagonal movement (a necessity to get to space b7 in order to move the king to the right, due to spaces b6 and b8 being unusable) hasn’t been implemented.
Ultimately, as this appears to be a puzzle game without a solution (and it isn’t as if the lack of a solution is part of a joke or something), I genuinely can’t rate this game very highly.