Henry Ernest Dudeney/Puzzles and Curious Problems/99 - The Conspirators' Code

Puzzles and Curious Problems by Henry Ernest Dudeney: $99$

The Conspirators' Code

Two conspirators had a secret code.

Their letters sometimes contained little arithmetical sums related to some quite plausible discussion,

and having an entirely innocent appearance.

But in their code each of the ten digits represented a different letter of the alphabet.

Thus, on one occasion, there was a little sum in simple addition which, when the letters were substituted for the figures, read as follows:

    F L Y
    F O R
+ Y O U R
-----------
  L I F E

It will be found an interesting puzzle to reconstruct the addition sum with the help of the clue that $I$ and $O$ stand for the figures $1$ and $0$ respectively.

Historical Note

Dudeney attributes this to a correspondent identified as G. P., whose identity has not been ascertained.

Sources

• 1932: Henry Ernest Dudeney: Puzzles and Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Digital Puzzles: $99$. -- The Conspirators' Code
• 1968: Henry Ernest Dudeney: 536 Puzzles & Curious Problems ... (previous) ... (next): Arithmetical and Algebraical Problems: Cryptarithm Puzzles: $158$. The Conspirators' Code