Can you solve it? Meet the puzzle king
by Alex Bellos from Science | The Guardian on (#513ME)
Pit your wits against the prof
If you are looking for an activity to take your mind off things, here's a puzzle with a delightful twist.
It was devised by Peter Winkler. When it comes to maths puzzles, Winkler is the connoisseur's connoisseur.
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