X-Quad
(Published on 1. July 2026, 00:00 by addie)
Antiknight: Any two cells separated by a knight's move in chess cannot contain the same digit.
Nonconsecutive: Any two orthogonally adjacent cells cannot contain consecutive digits.
Quadruples: Digits in white circles must be present at least once in the cells the clue touches. If a digit appears more than once in a circle, it must be present at least that many times in the cells the clue touches.
Solution code: Row 9
Comments
on 22. July 2026, 18:44 by itsid
learned a lot yes.. but boy my brain hurts... (took me several days on and off...) fun though but the toughest nut... almost broke a tooth ;-)
on 13. July 2026, 12:43 by sealsinthesoup
After I had already bifurcated twice, I found some of the delightful bits of logic that probably could have prevented that. Learned a lot solving this one!
on 1. July 2026, 01:58 by EYEONYSUS
Chose to do this while very jet-lagged, for some reason, and it took me AGES. I had a great time throughout, quadruples are one of my favourite variants and I loved your take on them :>
