The Testament of Sherlock Holmes Hints

How can I solve the control box puzzle?

  • 1 of 13: Look over the puzzle screen for a clue.
  • 2 of 13: You see that "+6" that's scratched along the bottom?
  • 3 of 13: That indicates a mathematical progression of some sort where six is added each time. However, there aren't just numbers here, but letters, too.
  • 4 of 13: Start with the numbers. If you look at the two numbers that can't be changed, you'll see that the second one (10) is equal to the first one (4) plus 6.
  • 5 of 13: So the third number should be equal to the second number (10) plus 6.
  • 6 of 13: Set the third number to 16, then start looking at the letters.
  • 7 of 13: The first letter, which can't be changed, is a D.
  • 8 of 13: If you think about alphabetical positioning, D is the fourth letter of the alphabet. That means the D can be thought of numerically as a 4.
  • 9 of 13: As you've already seen, the next number is 10 (4 plus 6), so what would the next letter be?
  • 10 of 13: It would be the tenth letter of the alphabet, which is J.
  • 11 of 13: Set the second letter to be a J, then figure out what the third letter would be.
  • 12 of 13: 10 plus 6 is 16, so what's the sixteenth letter of the alphabet?
  • 13 of 13: It's P, so set the last letter to be a P.