To people who have seen this puzzle before: I deactivated it and it got stuck in a state of limbo where I couldn't reactivate it.
Normal Sudoku rules apply.
Killer: Digits in a cage do not repeat and sum to the total given.
Surveyor: A digit N in a cell with a line indicates that N+1 and N-1 are N cells apart in the row or column indicated by the line. The line is red if and only if N is between N+1 and N-1 in that row or column. For clarification, two adjacent cells are 1 cell apart.
Lösungscode: Row 7
am 8. April 2026, 18:45 Uhr von StefanSch
In R1C4 is no clue.
If there would be a horizontal clue, you would be right.
With a red clue the numbers 2,3,4,5,6,7,8 would be possible, for a gray clue only 1,2,3 and 4.
{I meant R1C5. Whoopsie!}
am 8. April 2026, 16:09 Uhr von philolologue
Not sure if it's a lack of coffee, but my brain isn't fully grasping the ruleset. Could you give an example in the instructions?
{The clue in R1C4 could be satisfied with 3[2]1, 31[4]85 or 5[6]23847, or [3]2714 if it was grey, where R1C4 is in square brackets}