| F | I | R | M | S |
| + | S | T | I | R |
| T | W | I | S | T |
See more puzzles containing FIRMS, STIR or TWIST.
Would you like to see the solution?
The rules for cryptarithm puzzles are simple. Each letter represents one of the digits 0 to 9. Different letters represent different digits. The first digit in a number can't be 0. Your job is to find out what digit each letter represents. Can you solve the puzzle shown here?