Experimental Puzzle 1/6: Anti-knight
(Published on 18. May 2026, 20:40 by Sudokujoker)
This is the first puzzle in a short series of experimental puzzles. The first five puzzles in the series each explore one constraint in a 6x6 puzzle, and the sixth puzzle combines all constraints in a full-size sudoku.
Normal 6x6 sudoku rules apply: place the digits 1-6 in each row, column and 2x3 box. Dynamic fog: the grid is covered in fog. Correctly entering a digit will clear the fog in that cell and may clear the fog in other cells too. Anti-knight: Digits within a chess knight's move may not be the same.
Sudokupad link: https://sudokupad.app/vaziskd5og
Solution code: Row 6
Comments
on 10. June 2026, 17:18 by itsid
1* is fine, it essentially solves itself, once you realize that the logic does not know numbers, just relative positions ;-)
on 23. May 2026, 16:52 by fishsaltyak
Awesome puzzle. 1 star is fine.
on 21. May 2026, 20:49 by Oysterjelly
Surprised people are having trouble here. I get stumped on one stars all the time, but thought this flowed nicely. Didn’t use colors and unfolded pretty easily
on 21. May 2026, 06:52 by TeddieMilo
Maybe i'm not smart enuff, i can only solve it after coloring nearly the whole grid. I just cant follow the flow of the revealed digits.
on 19. May 2026, 21:33 by SanFranSam
Okay so it was easy once i saw the hint that it was a colouring puzzle. Thought i had a deadly pattern of coloured cells. but made the connection between colours and numbers, then it was easy. Still took me 25 minutes though.
on 19. May 2026, 11:16 by JVA
This puzzle relies entirely on proving that the anti-knight restriction on a 6x6 forces a checkerboard pattern, which is too much to ask for a 1*
on 19. May 2026, 00:38 by Jasperrr
Fun puzzle but having done my fair share of colouring puzzles, I definitely would not rate this 1*. It's also considerably harder than the other 5 puzzles in the series.
