Normal Sudoku rules apply. Every row, column and 3×3 box must contain the digits 1–9.
Each number outside the grid gives the sum of all orthogonal neighbors of one cell in the corresponding row or column. Where multiple numbers are given, the sums must be in the same order as the clues.
Solution code: Row 7.
on 8. June 2021, 13:16 by RockyRoer
So little information-- yet it solves! Great puzzle!
on 13. March 2021, 12:13 by Timwi
Changed difficulty from hard to average by suggestion from playtesters
on 13. March 2021, 06:22 by bigger
2 days and just 2 solve? That's really strange for a not that hard variant
on 11. March 2021, 17:38 by Timwi
Added F-puzzles link
on 11. March 2021, 17:26 by Timwi
Fix error in the image.