Between two green cells in the same row or column, the sum of those cells must appear as one digit between them. This does not apply if there is a third green in the middle.
A valid example can be seen to the right.
Normal Sudoku rules apply.
Try it at F-Puzzles.
Lösungscode: Digits from second row.
am 19. Dezember 2021, 21:20 Uhr von Hausigel_mod
Added label for Online solving tool
am 13. Oktober 2021, 18:16 Uhr von Ragna
Very nice idea! :-))