Always wanted to try this
I always saw this at doctor's offices and wanted to play with them, but didn't get much of a chance. This is my chance to play with it.
There are some bugs and some suggestions that I have.
The bug mainly is the one brought up by dargor17, with multiple pattern combinations that would work, but when and guessing what combination you have for the solution.
1) Have it so that when the gray shaded part is filled the level is solved.
2) I noticed that you had a snap feature, but as thebigo1081 suggested, a better one is needed. There were many times when I had the piece pretty much on the spot, but it was slightly off, making me have to maneuver the piece ever so slightly to get it in the right place... kinda annoying
3) For a future game maybe have the silhouette on the side or corner and have the getting the player to make the silhouetted figure with no outline.
Great game though