I really like the idea behind this game and you managed to port a lot of mechanics from Chess into this game in interesting ways, but I think the tank controls could use some more work. The movement feels a little choppy and getting stuck on walls doesn't help. And the use of A and D to determine rotation rather than translation is very hard to get used to, but I understand that this control scheme may make more sense for a tank. Maybe it could be possible to rotate the tank by holding right click and dragging, and then space and shift could be forward and reverse. I don't know if that would be more natural, but at least it would give you some more precision over your movement direction.