This art was originally known as letter arithmetic or verbal arithmetic . The word crypt-arithmetic was introduced by M. Vatriquant, writing under the pseudonym Minos , in the May 1931 issue of Sphinx , a Belgian magazine of recreational mathematics published in French from 1931 to 1939. In 1955, J. A. H. Hunter coined the word alphametic to designate a cryptarithm whose letters form sensible words or phrases. It was created by H. E. Dudeney and first published in the July 1924 issue of Strand Magazine associated with the story of a kidnapper's ransom demand. Preparation Rewrite the problem, expanding the interlinear space to make room for trial numbers that will be written under the letters.
Any number multiplied by zero is zero.
Matching is the process of assigning potencial values to a variable and testing whether they match the current state of the problem. Now, matching can help us make some progress. Let's assign all these values to the variable K, one by one, and check which of them matches the above pattern. Then if we are dealing with an easy problem there is enough material to proceed decoding the other digits until a solution is found. This is the exception and not the rule.