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Howth Signals - Aircode Mystery Cache

Hidden : 8/8/2025
Difficulty:
2.5 out of 5
Terrain:
3 out of 5

Size: Size:   small (small)

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How Geocaching Works

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Geocache Description:


This geocache is a mystery challenge in the form of a Sudoku puzzle. To uncover the final coordinates, you must solve the puzzle and extract six key numbers.

How to Solve the Sudoku:

  1. Understand the Grid: The puzzle consists of a 9x9 grid, divided into nine 3x3 subgrids.
  2. Fill in the Numbers: Each row, column, and 3x3 subgrid must contain the numbers 1 through 9 without repetition.
  3. Use Logic: Start with the numbers already provided and use process of elimination and logical reasoning to fill in the remaining spaces.

Once completed, the blue-shaded cells will reveal six numbers. These numbers correspond to the letters A - F:

  • A = First number = 2 (feeling generous!)
  • B = Second number
  • C = Third number
  • D = Fourth number
  • E = Fifth number
  • F = Sixth

 Final Coordinates

Substitute these numbers into the following format to find the final cache location:

N 53° 22.ABC   W 006° 03.DEF

 

Signing off—may your signals always be strong and your connections never drop. Until next time, stay tuned

Additional Hints (Decrypt)

Erq fgbar

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)