# money Test Program

There is a thin line between fun and profit in cryptography.
Letter puzzles demand cryptanalysis of substitution cyphers in the
form of arithmetic and logical reasoning. Our test program can be
phrased as follows: A poor college student was quite frugal and
sent the following telegram to his parents. How much money did he
want?

S E N D

+ M O R E

---------

M O N E Y

We have already introduced this problem in the language reference
for the Jekejeke Runtime library. We use the same pure Prolog
solution here. The pure Prolog solution is a brute force search
over the 8! possibilities. The problem was again introduced in the
language reference for the Jekejeke Minlog extension. We also use
the same CLP(FD) solution here. The CLP(FD) solution is a straight
forward formulation of the problem. Both approaches produce the
same single solution:

9 5 6 7

+ 1 0 8 5

---------

1 0 6 5 2

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