In this guide, we’re covering Indiana Jones and the Great Circle Father and Son Code Puzzle. This puzzle unlocks after completing A Nun in Trouble fieldwork. It automatically unlocks after the fieldwork is completed while you’re at Borgia Tower. To solve this puzzle, you first need to find Giuliana’s key. Read on to learn how to solve the Father and Son Code puzzle.
Find Giuliana’s Key In Indiana Jones and the Great Circle
To get to this puzzle’s location, you’ll first need to find Giuliana’s key. To get this key, you have to do the Nun in Trouble fieldwork. At the end, Giuliana will hand over a key.
Go to the Borgia Courtyards
Next, head to the Borgia Courtyards. To get here, head into Borgia Tower the same way you did for A Nun in Trouble. After jumping through the window, turn right, and head through the door. Take the path on the right and use the ladder to climb the scaffolding. At the top, go straight and then around a corner. At the top of the ramp, turn right, and look for the gap in the wall to your right. Here, you can use your whip to swing across. Go through the door and then use Giuliana’s key on the door to your right.
Solve the Father and Son Code Puzzle
Once inside the room, pick up the Italian Poem in the drawer on the left side of the desk. Check the other drawer and pick up the Polybius Square Diagram. With these two papers, you can decipher the code for the safe.
The letters circled on the Italian Poem are i, r, i, a, t, a, s, and o. Using the Polybius Square Diagram, pair i and r together to get 5, i and a together to get 8, t and a together to get 7, and s and o together to get 3.
The code for the safe is 5873.
That’s it for Indiana Jones and the Great Circle Father and Son Code Puzzle. Need more game guides? Check these out!
- Indiana Jones and the Great Circle – A Snake in the Garden Puzzle
- Indiana Jones and the Great Circle – House of God Puzzle Solution
Has been playing video games for her entire life so far. Grew up with the Sega Master System II. Her favourite games include both Resident Evil 2 (OG) and Final Fantasy VIII.
She now writes articles about video games.
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