The last couple of weeks, some of my colleagues and I have been going crazy with riddles, brain teasers, and tests. It started because we needed to hire another one for our team, and then BANG we were giving each other brain teasers all the time. It’’s like being back in elementary school (or at any i-bank/consultancy interview, for that matter).

It made me think back of my 7th grade physics teacher. He was young, cool, and loved to tease us. We loved to tease him back, of course. He gave me a riddle, which I spent nearly a month trying to figure out.

This is a house, or a box, or whatever you might call it. It has 16 walls, which I numbered arbitrarily. Now, in one continuous line, starting either inside or outside the house, cross all of the walls, but never cross any wall more than once. Can you do that?

I never figured it out during the month, and I think I found out that it has no solution. At least that’’s what I maintain to this day to keep some of my 7th grade self-confidence. You’’re welcome to second-guess me, of course; let me know.

Go to BrainBashers for a collection of riddles, teasers and a lot more. Let me know if you have any good links.

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