A phone dial pad with empty squares
Pick up your phone and try to remember your high school math lessons.
- 16 squared is 256
- utopia – auto = pi
- Check his old phone number in puzzle 14
- you’ve created a ‘new’ phone call pad with the numbers from hint one
- pretending a real call pad was superimposed on your new one, what number would Arthur have?
- Call him on cypher.center/cyphone at the new number