The Silent Checkpoints

Number all boxes from 1 to 36 to form a single orthogonal path without repetition.

Materials: Pencil, gum and grill; no connection required.

Rules you need

The successive numbers occupy two boxes sharing one side; no diagonal displacement.
Each box receives exactly a number of 1 to 36. Print marks remain in their place.
The course starts in 1 and ends in 36; it does not have to go back to the start.

The puzzle

The white boxes are all usable. The boxes without clues are not obstacles.

Coordinates: lines from top to bottom, columns from left to right.
L / C	1	2	3	5	6
1	1
2				8
3
4			28
5	15	18		33	36
6					35

Why this level?

Coordinate the intervals between markers, the separations of regions and the constraints of parity. The solver must explore 613 prefixes; the level reflects this combined exploration, without automatically absorbing time of calculation and human difficulty.

Your workspace

Write down your assumptions separately from deductions you have proved.

Notes for SOLO-025

View the solution to SOLO-025 →