This question already has an answer here:
An assignment given to us as part of our college course in AI requires us to solve a cryptarithmetic puzzle. The problem is I can't find my way around puzzles - and it was never a problem until now, because courses which I took didn't have assignments where I had to solve a puzzle. I am looking for a general method to solve a puzzle, such as
SEND + MORE ________ MONEY
Now, I don't know how that expression makes sense. So, the first thing which wish to understand is to how to make sense out of this, and then the next thing is how to solve it. It would be great if you could explain what is going on at each step.