Good news: The solution time has been extended till Friday as by technical reasons the newsletter didn't go on time. You and your gra...

Here is a new great puzzle my coworker shared with me. By the way, he is in a delivery room right now waiting for his twin boys to emerge....

Can you solve this in 20 seconds?  If not, perhaps you are like I not ready for the 1st grade. Try it on your iPad or a Smart Phone, thi...

Two people are running around the Olympic stadium in the same direction. One of them is a much faster runner than another. They have ...

Lets try as an  appetizer  the riddle my coworker shared with me: The more you take from it, the larger it becomes. What is i...

This week my friend Irina complained to me that her son's 17th birthday fell on the Boston Marathon Day and friends weren't a...

One friend is telling another: - I am going to recommend you 5 movies each of which will completely turn your life upside-down. One m...