Nice one! Liked the fun art style / general character behaviour, and the simplified chess-mechanics with its mix of stealth aspect to it. Much challenge, good head-scratching. Most of my hard times were spent on level 4 and 7 I think.
Fun =3 Although I wouldn't mind if you play around with the idea where you the ball would be faster the more you hit it, within a small period of time, *regardless if you hit it towards the same direction its moving at or not*.