Combo Breakers

(Published on 8. October 2025, 09:21 by cygne)

Combo Breakers by Cygne

Rules

Normal Sudoku rules apply.
Adjacent digits along an orange Dutch Whisper line must differ by at least 4.
Digits separated by a white Kropki dot are consecutive.
Digits separated by a black Kropki dot are in a 2:1 ratio.
Dynamic fog: placing the correct digit in certain cells will clear fog from different parts of the grid. No guessing is required to progress.

Play in SudokuPad

Wanted to give fog puzzle construction a go! Hope you enjoy

Solution code: Column 3, top to bottom

Last changed on today, 00:48

Solved by xrrx, EmX68, Zibl, XhcnoirX, Ragna, jinkela114514, forsen, jalebc, flutchman, superkinkel, Snuggles, naggy, ludvigr04, Photyne, PinkNickels, abs, maglia, Lion Crow, SKORP17, BULL-TT, Crul, jgarber, ... Kenji769, Blaimi, CottonFlower, croo377, Gizmo, SudokuFan, metacom, milxqueen, MaxSmartable, zixx, jkuo7, Uhu, hurrdurr, kublai, maniacaljackal, luisdias412, me and the paws, dielilla, TagEule

Full list

Comments

Last changed today, 00:48

today, 00:48 by cygne
Thanks for the feedback. I've updated the revealed cells to ensure the second digit can be determined uniquely, and updated the Sudoku pad link.

My apologies for missing the second possibility with the original choice of revealed cells.

Last changed yesterday, 21:40

yesterday, 21:39 by SudokuFan
I have verified using Rangsk's computer solver (https://github.com/dclamage/SudokuSolver) that there is no way to deduce the second digit

yesterday, 15:44 by Gersh
I solved it, but after a few friends mentioned it impossible for them to find the second digit, I went back and found I may have made a too-bold assumption in R7C5. Would love to hear from you and see what you think about this. Thanks!

on 8. October 2025, 21:08 by josemadre
Fantastic! Low rating is baffling

on 8. October 2025, 12:23 by Ragna
Fun puzzle! Thank you. :-)