The Red Safe in Grandpa's Office can be opened in a later section of MADiSON by using one of the drawings in Luca's notebook. Players will need to complete puzzles and progress the story until a drawing appears that has three curved lines pointing in a certain direction, and each one has tick marks that help to determine the right combination for the Red Safe.
In order to trigger the drawing that reveals the Red Safe combination, players will need to complete the puzzle in the workshop. To solve the cuckoo clock puzzle in MADiSON, Luca needs to swap the clock faces downstairs with the ones that can be found around the house. Each cuckoo clock has a group of clocks surrounding it that are stuck at a specific time. This indicates which clock face Luca needs to use for each cuckoo clock.
Related: MADiSON: How to Solve The Elevator Puzzle
Solving the cuckoo clock puzzle is fairly easy once the clue from the clocks behind them is identified. The clock faces downstairs can be swapped in any order with the ones in the first hallway, kitchen, attic, and outside of Grandpa's Office. However, the first clock face can only be obtained by finding the combination to the Green Safe in MADiSON. After swapping all of the clock faces, Luca can take a picture of the door with the clock on it, then the drawing of the Red Safe combination will appear in his notebook.
The drawing will depict a rectangle with a circle in the center with three unfinished circles inside it. The lines with arrows at one end and tick marks along the curve are the clues needed to open the Red Safe. The arrows indicate which direction to turn the dial in, and the intersecting marks represent how many times it needs to be turned.
The combination can be entered
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