Is
there any method by which I can tell whether a given
alphametic is valid or not? |

To validate a given alphametic, that is, confirm if it has a unique solution, the easiest way is to submit it to an alphametic solver (computer program). In the Web you find four major online solvers: - Jorge Soaresīs "Alphametic Puzzle Solver"
- Naoyuki Tamuraīs
"Cryptarithmetic Puzzle Solver"
- Truman Collinsīs "Alphametic Puzzle Solver"
- Robert
Israel's "The Alphametic Applet"
If you test the puzzle TWO + MEN = MEET you will find that it is not a valid alphametic, because it has no solution. If you test the puzzle BILL + GATES = GREAT you will find that it is not a valid alphametic, because it has 74 solutions. But you can try testing PLACE + A + CALL = LATER and ... bingo! you find that this is a valid alphametic, which has got a unique solution: (67142 + 1 + 4177 = 71320). |