Normal Sudoku rules apply. The grid is covered in dynamic fog. Placing correct digits will clear fog in that cell, and may clear fog elsewhere in the grid. Cells a chess knight’s move or king’s move apart must be different. Orthogonally adjacent cells cannot sum to five or ten.
https://sudokupad.app/l8gnwlhzn1
Solution code: The middle row of the puzzle.
Solved by EmX68, drmegadude, Greg, nunc, Rearden, VeTaurus, anthe95, SKORP17, tetchytomcat, thomamas, hardline35, milxqueen, DanishDynamite, Dermerlin, AN_not_IO, kangaroo, maniacaljackal, lina_hyena, Dendr, ... andersat, agvard, meiwanmeiliao, StaticTimeHead, Crul, TroublesomeOrca, Pairot, Stobart, Fisherman, flaemmchen, timww572, trencaclosques, ole-1995a, poundcayx, MaxSmartable, Photyne, Wenni, Frutlop
Comments
on 4. January 2026, 18:21 by cfunkmi
Great puzzle.solid 2* and had a great flow to it.
on 3. January 2026, 20:30 by Hengist
wow, this puzzle has no business being this smooth! amazing flow, and even made me come up with a new colouring scheme
on 3. January 2026, 16:50 by Saskia11
Nice :) Thanks!
on 3. January 2026, 07:12 by Dendr
One of those puzzles: 'There's no way you can discover any cell without guessing! Oh, wait a minute.' And then - so smooth! Great one, and actually easy.
on 3. January 2026, 00:25 by hardline35
Very nice flow. Thank you!