Is that... a chess meets curling game? :D Crazy concept for a puzzle game... that works! If only I was a slightly less sleepy right now (still haven't recovered fully after the game jam :D) I'd love to try beat a level or two more. 

I agree with the suggestions below that the reset button would be a great addition as other UI improvements.

Very cool concept! And nice challenging levels. The UI could use some improvements. Some suggestions:
- a reset button to redo the level (when you see it's not going as planned). It's annoying to wait until the end of the game and then select the level again
- using the scroll wheel to change the time is not bad as a shortcut, but a separate time control for each piece would be more intuitive. It is a bit confusing to me that the clock shows the time for the piece you want to set and also the timer for the game.
- the king can't move, which makes sense with these puzzles. Maybe give him a different color?

Really great concept for a puzzle game, it could benefit from some way to visualise or explain how things move in order to avoid the trial and error, but once you've figured that out it plays very well!