Where to Find the Blue Push Pin
Find the final-area landmark and continue to the complete thread-puzzle solution.
Look in the final wall layer, on the left when you are facing the computer-room entrance. The landmark is a large blue push pin with smaller red pins and tomato-shaped pincushions nearby.
This direction uses the office entrance as its reference, not whichever direction your camera happens to face. If that part of the garden is still enclosed, continue opening the area first.
The blue pin belongs to the thread-counting puzzle. Finding it is only the location step; the answer also requires setting the pincushions and submitting at the blue pin.
Open the complete 4-7-8 puzzle solution for the counting rule and final interaction. Use the Black Stars checklist for the wider completion route.
Location source: Black Star Guide, Push Pin section.
Sources checked: September 8, 2026 (UTC+08:00). Published Steam route; no new map coordinates or controller buttons have been inferred.