Okay, I was able to restore and back up my game data. Level 40 is the "Slowly Now" puzzle. The title of the level is supposed to give you a hint. I got stuck on this one for awhile as well, because I thought I had to bring all the fire tiles down to melt the ice tiles. You can't do that. However, in 10 moves, the ice tiles freeze away. Thus, you must carefully find matches of 3 (no more) in the correct order... Fire tiles will burn up in 5 moves, and the ice tiles freeze away in 10 moves.