Solution code: Using the characters shown for each tile, enter the sequence of tiles for the longest path between two exits, starting at the exit closest to the top-left corner of the puzzle.
on 16. February 2024, 15:24 by Vebby
Interesting puzzle!
Given link is broken, here's one with answer check (digits). See top-right key for corresponding digits.
http://tinyurl.com/2a6xuouc
on 29. September 2021, 13:15 by uvo_mod
Label ergänzt.
on 1. May 2021, 00:47 by SudokuExplorer
Non-sudoku solvers should definitely give this a go. Very nice puzzle! :-)
on 30. April 2021, 19:10 by panthchesh
Thanks for the puzzle! That was definitely interesting!
on 30. April 2021, 08:05 by davmillar
Added Penpa link