Ions Pt. 2
(Published on 7. November 2025, 18:48 by mimec)
Yes, you're not mistaken - these are given digits! When I published the first puzzle featuring the "ions" rule, I realized that it's so restrictive that it could work in a "classic" sudoku, and indeed it works very well. As always, I appreciate your ratings and comments.
Rules:
- Normal sudoku rules apply.
- Every cell orthogonally adjacent to a 1 must be at least a 5 and every cell orthogonally adjacent to a 9 must be at most a 5.
Solution code: Row 9
Solved by Piff, TripleABattery, asynchronous, sedici, GaviGuy, SKORP17, gxorgx, Killer-Ly , Chaos1989, Kigor, Marshal on Mars, paranoid, dkfan9, apendleton, steperlich, Julianl, Sudokode, benisjammin, Snookerfan
Comments
on 26. November 2025, 12:44 by Snookerfan
Lovely! I really like this constraint and I am getting better at applying it by practice. Thank you
on 11. November 2025, 16:14 by apendleton
What a fun construction!
