Vixi
(Published on 2. October 2026, 02:42 by UncleLogic)
VI / XI is a variant Sudoku featuring Anti-King, Anti-Knight, and a complete VI/XI constraint.
Sudoku:
Place the digits 1–9 in every row, column, and 3×3 box, with no repeats.
Anti-King:
Equal digits may not be a king's move apart.
Anti-Knight:
Equal digits may not be a knight's move apart.
VI / XI:
Orthogonally adjacent digits that sum to 6 are marked with VI.
Orthogonally adjacent digits that sum to 11 are marked with XI.
All possible VI and XI clues are given. Therefore, orthogonally adjacent cells without a VI or XI may not sum to 6 or 11.
Black Kropki:
Digits separated by a black dot are in a 1:2 ratio.
Not all possible black Kropki dots are necessarily given.
Play online:
Solve in SudokuPad
I hope you enjoy it!
More puzzles by me can be found at UncleLogic.com.
Solution code: Enter Row 4 from left to right, followed by Row 5 from left to right.
Comments
on 2. October 2026, 23:23 by Winterbeard
@macintux. It worked fine in browser until a couple of days ago, now it’s very buggy. Think it’s just temporary thing on sudoku pad. Maybe Sven needs more coffee donations…;-)
on 2. October 2026, 22:33 by macintux
The copy button doesn’t work in my iPad’s Safari browser, never figured out why.
Great puzzle otherwise.
on 2. October 2026, 20:18 by Supertaster
@JVA
Agreed, but at least with Sudokupad's copy function, it's quick.
on 2. October 2026, 11:53 by JVA
18 digit solution code, in this day and age?
