Not at all an important topic, but sometimes I play chess VS. this program: 
http://www.chess.com/play/computer.html 
 no download or anything. If you like a good game, this thing will give you one.
 I play chess all the time vs my friends when we're hanging out and such, and I haven't lost in years. This program kicks my ass time after time. To my defence I have beaten it a few times, but i've had to have lost to it a few hundred times by now.
Good luck, let me know how you do.