Solver-verified route
- Tap Screw 2.
- Tap Screw 3.
- Tap Screw 1.
- Tap Screw 4.
- Tap Screw 5.
- Tap Screw 6.
- Tap Screw 7.
- Tap Screw 13.
- Tap Screw 14.
- Tap Screw 15.
- Tap Screw 8.
- Tap Screw 9.
- Tap Screw 10.
- Tap Screw 11.
- Tap Screw 12.
This route holds the buffer tray at a peak of 1 screw (the 3-star limit is 4). Solver difficulty score: 7.3.