Puzzle Source checked
Big Walk Invisible Ink Memory Puzzle
Progressive, source-checked help for the Big Walk puzzle at 3740, 2140: how to identify it, coordinate the team and claim the reward.
2–12 players Near Green Tower — coordinates 3740, 2140 Updated Aug 15, 2026
Players also call this: nine blank-looking pieces viewed through a fixed lens, green tower puzzle, 3740, 2140 puzzle
How to identify it
This guide covers nine blank-looking pieces viewed through a fixed lens at Near Green Tower — coordinates 3740, 2140. Confirm the visible objects and coordinates before opening a hint; Big Walk does not display official puzzle names.
Hint ladder
Quick solution
Complete step-by-step solution
Quick checklist
- At least two players are present
- The team has agreed on short signals
- Someone has a free hand or bag slot for the reward
- Sort pieces beside matching landmarks before activating; the target changes between attempts.
Verify it before moving on
After the reward appears, choose one carrier and take it to the correct receiver before the group disperses. A solved mechanism and a banked progression item are not always the same thing.
Related Big Walk help
Sources checked
- Screen Hype Green Tower route — coordinates and puzzle-state cross-check
- Community guide index — player names and 24-puzzle coverage cross-check