Match the exact unit
This is guide unit 12: Chapter 3 Cognito, Box 2. Confirm the screenshot before copying a symbol, dial or slider state.
Solution cross-checkedBoxes Lost Fragments Chapter 3 Box 2 · verified 2026-09-30
Boxes Lost Fragments Chapter 3 Box 2 solution
Tune the radio, assemble the musical mechanisms, and reproduce the melody symbols to release the piano key.
Quick route: Follow the four mechanism phases below in order; the exact video segment begins at 56:53.
Step-by-step walkthrough
Open the first layer
Open the first small door for the picture hint, remove the opposite bolt, fit the antenna, and centre every radio needle between its red lines.
State and version notes
- Confirm the chapter, unit label and screenshot together before copying a visual state.
- Inventory objects often unfold or hide a second switch; inspect every side before assuming an item is unusable.
- This route was checked against two complete written walkthroughs and the matching full-game video segment.
Checked against the matching Just Adventure section, the complete Walkthrough King route, and the full-game video at this unit's timestamp.
EXACT SEGMENT
The clip starts at 56:53 and ends before the next named box or hall puzzle.
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