first cryptarithm ever
Agriculturalist, Volume 23, December 1864, p. 349.
The cryptarithm shown above appeared in a puzzle column in Orange
Judd's magazine American
entitled "No. 109 Mathematical Puzzle". It is a ideal keyed
multiplication (one word, 1-0); the keyword is a proper name. No
constructor is credited, and it does not appear to have been a
particularly popular puzzle: I have not found any further examples
scanning through a couple more years' worth of the magazine (thanks to
the Internet Archive for providing a digital
copy of the 1864 volume).
This article is copyright ©
by Michael Keller. All rights reserved.