Thanks again!
For the keys, you're spot on. I've got a local branch of the code for displaying for the keys on the bottom of the right panel to let you know which ones you have and which ones you need to collect. It's got some work that needs to be done before I can publish it, but it's coming.
The non-trolling room is partially a visual feature, and partially to build suspense and a sense of dread. I want the player to feel nervous when moving through that area, so it was a kind of success :P However, it's not really supposed to loop back around quite so much. Also, much of the worldgen was built in the final day or two of 7drl, so I'm just happy it functions at all!
The AI treats you as a simple King, which is why you're able to pull off some moves that seem obvious given what Power Moves you have available. However, the AI actually takes a huge number of factors into consideration when deciding which piece to move and where, and adding in a "The King has Power Moves?!" factor is something I've been playing around with. There are also a bunch of knobs we can tweak to change the AI behavior, and we're toying with the idea of making different areas feel different by tweaking these knobs. That way a Bishop in the Caves might behave differently than a Bishop elsewhere in the world.
And good call on looking at all the information available to you. While Checkxile gives you a lot of information, sometimes it's hard to interpret exactly what it means. This too is a result of the whole game being built in 7 days, and is something we'd like to improve upon.