Enigma 255: Two heads are better than one
2 February 2015
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From New Scientist #1402, 22nd March 1984 [link]
“Care for a flutter?” Alf asked Bert.
“Suits me,” Bert replied.
“We need a 50p, a 20p, a 10p and a 5p coin. I’ll contribute one of them and you the other three.”
“We toss all four. If any come up Heads, then whichever of us has the most money (not the most coins) head-side up scoops all four coins. If all four come up Tails, we toss again.”
“OK. Who contributes what?”
“Well,” said Alf, “as I am putting in only one coin, I’ll decide which it is to be.”
Which coin gives the crafty Alf the best bet?
This puzzle brings the total number of Enigma puzzles on the site to 780. As the final Enigma was #1780, you might think that means there are 1,000 puzzles left to publish. But at Christmas time, especially in the 80’s, multiple puzzles were often published under the same number. (Also, I’ve so far come across three puzzles that are duplicates of already published puzzles). So, my current estimate is that I will need to publish around 1,788 puzzles to have a full archive of Enigma puzzles, so it’ll be a couple of weeks before there are around 1,000 puzzles left to go.