In eight of the boxes the number of that box is in a cell adjacent (orthogonally or diagonally) to three identical digits all one higher or lower than that box number.
The whole grid can be rotated by 180 degrees and the sum of any cell pre and post rotation is 10.
One of the two main diagonals does not repeat any digits and starts lower than it ends (reading left to right)
Solve online:Sudokupad
billybeth tips at:billybeth Sudoku secrets channel
Solution code: top row
on 8. August 2026, 19:06 by billybeth
added link
on 6. July 2026, 17:59 by Rollo
Toll! Wie kommt man bloß auf so eine verrückte Idee!?
on 4. July 2026, 10:45 by PuzzlePatzer
Such a nice puzzle! thanks for sharing
on 30. June 2026, 21:25 by OGRussHood
For a miracle sudoku, I'm disappointed that there are only 16 solves on LMD at the time that I solved it. Scandalously undersolved. Let's get those numbers up, everybody!
on 26. June 2026, 03:47 by TeddieMilo
Easy at first, but i find it less simple towards the end. Maybe I missed something.
Great puzzle.
on 25. June 2026, 18:38 by ragmat12
Great puzzle, a bit tough for 1 star but once you get the break-in, it collapsed quite quickly! Nice!
on 25. June 2026, 17:54 by billybeth
added link to sudokupad
| Difficulty: | ![]() |
| Rating: | 91 % |
| Solved: | 26 times |
| Observed: | 0 times |
| ID: | 000TGF |
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