The Knight Train

(Published on 24. August 2021, 18:39 by SirSchmoopy)

This combines the the train/skyscraper, and knight/snake sudoku variants that I have been working on. Let me know if you need clarification on the rules or have any other feedback.

Link:
F-Puzzles

Rules:

Normal Sudoku Rules Apply
Normal Antiknight Rules Apply - Cells a knight's move (in chess) apart from each other cannot contain the same digit.
There is a train track which consits of a single path of orthogonally connected cells. The track's path doesn't touch itself, not even diagonally. The track's start and end points are to be determined by the solver.
The track goes through the entire grid such that there is at least 1 track cell in every 2x2 region in the grid.
Blue shaded cells contain each of the digits from 1 to 8 exactly once, and a shaded cell's digit indicates the number of train track cells a knight's move apart from it. Blue cells are not part of the track.
Clues outside the grid act as skyscraper clues. However, to make way for the train track, skyscrapers on track cells have been demolished, so the height of any cells along the track is 0. (These block other height 0 cells, so if a row/column starts with multiple height 0 cells, only the first such cell will be included in the count)

Example 6x6 puzzle:

The below solved 6x6 grid follows all the above rules (With 1-4 shaded cells instead of 1-8). Cells shaded red correspond to the track.