Sixes and Sevens
(Published on 31. August 2021, 02:21 by LucyAudrin)
Normal Sudoku rules apply. Every orthogonally adjacent pair of cells that sums to 6 is marked with a white dot, and every pair that sums to 7 is marked with a black dot. The number outside the grid gives the sum of the indicated diagonal. Inequality signs point to the smaller digit.
f-puzzles link
I have more puzzles on my website
f-puzzles link
I have more puzzles on my website
Solution code: Row 3
Solved by Greg, jchan18, Nairi, J_Whatley, peterkp, SKORP17, SimiC, JonnyKaufman, butch02, tubahat, Adenry, koba1917, ManuH, wilsig, apendleton, avishai, zorant, dmacho24, MalkoMann2, CyberMonkey, 0123coolkid, ... donnystam9, Enkerro, Bart, MB_Cyclist, saskia-daniela, skywalker, NC1403, KyleBaran, XhcnoirX, rcg, Crul, chain.reader, Ulistef, Banana, Lurcane, zrbakhtiar, Carolin, PinkNickels, Terrapin
Comments
on 24. June 2025, 20:48 by PinkNickels
It's been a long time since you posted a puzzle! I am going back in the archives and doing some of the puzzles that were too hard for me back when I first started solving. You always had a very unique style. I hope you are doing OK.
on 7. September 2021, 03:16 by KyleBaran
Oh there is a negative constraint, no wonder my progress came to a halt
on 2. September 2021, 01:07 by elpadrinoIV
The ending was tough!
on 1. September 2021, 20:40 by nearestneighbour
Apparently the dots switch colors if you turn on dark mode! For one second I thought I had been doing the entire puzzle wrong.
on 31. August 2021, 22:31 by koba1917
Really love the work that the negative constraint does in this!
