Slow response in game

Hello all,

I have created a Mahjong solitaire game in which 144 tiles are laid out on the stage, variably stacked up to four levels. You find two matching tiles that have free sides and have no tile sitting on top of them, click them both, and they are removed. Object is to remove all of them.

My problem is that I’m getting about a one second lag when I click the second of two matching tiles. I’m pretty certain that the bottleneck is in the functions that get called when any tile is clicked, that determine if it’s free on one side and above.

I have never “stepped through” or otherwise debugged before. Is there a way for me to step through my code and get some indication of what the specific problem is?

Thanks!