Logic Masters Deutschland e.V.

X-Quad

(Published on 1. July 2026, 00:00 by addie)

Standard 9x9 sudoku rules apply.

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.

Solve on Sudokupad

Solution code: Row 9

Last changed on -
Solved by augsod, forsen, gxorgx, TheCutmaster, EYEONYSUS, jalebc, Bjd, RadchenkoAleksandr, kkli, Gilliatt, SKORP17, fuxia, Noa, ZornsLemon, Stargazing Albatross, jordanza, Asphodel, IcaroLopes, BlazingSnow, ... TroublesomeOrca, 0123coolkid, _Sofia_, LLX, flipout, PippoForte, War, Jrosas, Valeph0, strangelyinsane, superkinkel, Dentones, Janie, bcreturnee, tifuuu, Isfan, Brodie2000, McMingus, sealsinthesoup
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Comments

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 :>

Difficulty:5
Rating:81 %
Solved:41 times
Observed:0 times
ID:000TGK
Variant combination
Sudoku, Quadruple (Variant), Anti-Knight (Variant), Non-Consecutive (Variant), Knight Move (Theme)

Enter solution

Solution code:

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