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May 3, 2018 06:13 pm PDT
Original Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/0yuWZk4oI5c/coin-puzzle-how-do-you-make-a.html
Coin puzzle: How do you make a circle of 6 coins from two rows in only 3 turns?
Here's a fun puzzle explained to us by math writer Alex Bellos (but invented by mathematician Henry Ernest Dudeney) that you can try with six coins. First line them up like this:
Now see if you can arrange them in a circle with only three moves. The two rules: you can slide them but not pick them up, and you must move them to a position where they are touching two other coins.
Here is a video explaining the rules a bit more, but spoiler alert: don't go past 2:37 unless you want to see how it's done.
https://youtu.be/_pP_C7HEy3gOriginal Link: http://feeds.boingboing.net/~r/boingboing/iBag/~3/0yuWZk4oI5c/coin-puzzle-how-do-you-make-a.html
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