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McEs, A Hacker Life
Monday, September 25, 2006
 PUZZLE: 12 or 13?

Found this today, not sure how widely it has been distributed in past. Anyway, it's awesome. Try it on if you've not before:

Is it 12 or 13? Wait until the group changes position.


Keep looking!!!

The coolest puzzle I've seen in a while.

Comments:
12.

In the "13" configuration each person is missing a very small slice of themselves which has been shuffled around to make up a new person.

This can most plainly be seen by the fellow on the left who's missing the top of his head and the fellow 6th from the left whose shoes aren't quite as bulky as they should be (when in the 13 configuration)
 
Similar puzzles:

Get Off the Earth Puzzle
BUSHWACKY and O Sumwon bin Lyin
The Extra Square
 
SOLUTION
 
Cairo-based demo implementation of 12or13 here.
 
Good Puzzle. Have look at my first blog. I have posted this puzzle as one of my very first puzzles in my blog.

---------------------
http://onepuzzleaday.blogspot.com
http://justriddles.blogspot.com
http://justfungames.blogspot.com
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the first one in the bottom
 
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