Our gray cells need some good exercises from time to time (to remain charged up and alert)…Here are 2 links which will make your gray cells somewhat active :-P
- [PythonChallenge](http://pythonchallenge.com/) - [Notpron Challenge](http://deathball.net/notpron/) The Notpron challenge is one of the best online puzzle solving challenges...it has some 138 levels and till now only 94 people (0.001% of total) have crossed all of them..lolz anyways hope this info doesn't discourage you !!! Try being the 95th one ;-)PythonChallenge is a programming challenge where you need to apply the programming languages to solve sorta real life situations…its quite interesting..do give a try !