The APK worked on an Android emulator (it kind of errored out on my phone, didn't open). Good suggestion!
Cool take on chess, with HP, attack and defence, in addition to different movement styles. What’s the difference between the Starter and Wonderland Crowns? I like the different tradeoffs that pieces offer. The joint attack and defence opens up some good possibilities, although probably the only downside here is that keeping track of all the joint effects was sometimes overwhelming. Good job on the UI that throws up the necessary detail when required. The attack and defence indicators are very useful. Further the net HP result shown for the attacking and defending pieces when planning an attack is invaluable. I mostly followed a strategy of keeping my pieces coordinated, something I felt the AI didn’t do too well. With that I could pick off the AI pieces one by one. Obtaining a calculated victory in the end was satisfying! For a jam scope I felt the AI did a good job. No doubt this can be improved in future. Neat game overall :) Wish you the best for further development!