Enigma 1000: One thousand times
26 July 2019
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From New Scientist #2155, 10th October 1998 [link]
Since M is the Roman numeral for 1000, we can say that with this puzzle New Scientist has published its Enigma M times — which is significant because:
ENIGMA ÷ M = TIMES
In this problem each letter stands for a different digit, and the same letter represents the same digit wherever it appears. No number starts with a zero.
I reckon that, with the extra puzzles that are sometime published under the same number at Christmas time, by the time Enigma 1000 was published there had actually been 1011 Enigma puzzles in New Scientist.
However, a number of the puzzles in that range were flawed (I have found 17 so far, and there are 494 puzzles remaining to add to the site).
Enigma 401 is unusual, as not only was the flaw acknowledged by New Scientist, but a corrected version of the puzzle was published as Enigma 405. Also Enigma 9 is identical to Enigma 83. Together these reduce the count by 2 to give 1009 puzzles published.