Thanks for the compliments :). I was originally going to have it so pieces could not be placed in the same spot but ran out of time to figure it out. As for the putting down and picking up, it's a little fidgety I can probably fix that by messing with the input a little, but if you give it a hard click and preferably the mouse over the piece while doing that it'll put down the piece. I may work on the game a little after the rating has concluded so I'll keep your suggestions in mind.