For the digits 1 to 8, cells containing the same digit cannot be separated by a knight's move. For the digit 9, cells cannot be seperated by a king's move.
The grid is to be treated as a torus (rows 1 and 9 are adjacent and columns 1 and 9 are adjacent) and all constraints apply across all "edges".
Digits along an arrow sum to the digit(s) in the circle or pill at the end of the arrow. The pill-shape is to be read as a two digit number from left to right. Numbers may repeat along arrows if allowed by other rules.
Solid grey circles contain an odd digit.
Solution code: Row1Row6
on 6. October 2021, 16:29 by uvo_mod
Label ergänzt.
on 30. May 2021, 13:41 by Piatato
Fun puzzle!