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**JohnOfStony****Member**- Registered: 2017-10-22
- Posts: 1

There is an alternative puzzle:

ALPHA + BETA + GAMMA = DELTA

(British spelling of alpha and correct spelling of gamma). This has the advantage that there are 10 different letters so you have to use all 10 digits 0 to 9. There are 14 different solutions to this puzzle.

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**phrontister****Real Member**- From: The Land of Tomorrow
- Registered: 2009-07-12
- Posts: 4,626

Hi JohnOfStony,

I only found 13 solutions to your alternative puzzle.

A unique solution exists with the constraint, "The value of the sum's first letter ('D') is a prime number".

Another alternative puzzle, ALPHA - BETA - GAMMA = DELTA, has 4 solutions. A unique solution exists with the constraint, "The value of the sum's first letter ('D') is an odd prime number".

*Last edited by phrontister (2017-11-26 20:17:11)*

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