The visuals had a nice, clean presentation and I UI for available movement squares made it very clear which moves were valid. The rule set also seemed pretty interesting, but the limited move economy felt very strict at first. I tried a number of times but I wasn't able to reliably hit all coin locations before running out of moves. Only later did it become clear that you could collect all of the items along a straight line when using the bishop or rook (clearly I liked the knight a bit too much). After that realization, it felt like I had a lot more meaningful decisions available.
The king ability and movement restriction was a nice touch in setting up the risk/cost tradeoffs. It makes sense that the king should be harder to move since it comes with such a strong upside on revealing the squares around it. I think I'm onboard with the "only moves onto shields" half of the equation. The shield cannot, however, then be used to go clear a bomb. Since the king starts without a shield on it anyway, it felt like that should be an available option.
As far as the other pieces go, the rook felt best for raw coin collection, the knight was then good for picking up precise shield squares to clear out bombs and make way for another big rook move. The bishop seemed to be the odd one out. I usually only moved it once and that would mainly just be done to clear the way for the rook. I'm not sure what could be done to make the bishop a more attractive option. I can say, however, that it definitely felt especially restricted whenever it spawned on the same diagonal as the king.