Incredible amount of polish and content for a one week game jam. I almost made a chess Roguelike myself. Glad I hadn't now.
My bishop couldn't got stuck on one level:
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Thanks! Yeah islands having those one wide bridges does indeed trap bishops pretty annoyingly. I have already improved this for a future version a bit. I'm sure there are already many different chess roguelikes out there but I intentionally didn't even check not to be unintentionally influenced (or unmotivated) by them. But there are so many directions you could take the genre combination so the world can easily fit multiple!