Normal Sudoku rules apply.
A line in a cell indicates the presence of a surveyor digit. A digit N is a surveyor if, in the direction of the line, the cells containing N-1 and N+1 are N cells apart. For instance, 3 is a surveyor in 2354 because 2 and 4 are 3 cells apart.
Furthermore, if the line is red, the surveyor is between the two cells it surveys, as in the example above. Otherwise, the line is gray.
All the possible surveyors are given.
Lösungscode: Column 3, column 7
am 4. Juni 2023, 21:28 Uhr von stephane.bura
Added missing line in the Penpa version.
Thanks DiMono!
am 14. August 2021, 11:34 Uhr von Mody
Hat Spaß gemacht. It was funny :)
am 6. Oktober 2020, 22:23 Uhr von henrypijames
Ye know, ye could've used arrows instead of lines. ;)
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:D
am 2. Oktober 2020, 21:54 Uhr von stephane.bura
Added a line. Thanks Yohann!
am 2. Oktober 2020, 00:04 Uhr von marcmees
Appears more dangerous than it really is. Nice. thanks