Logic Masters Deutschland e.V.

Stardom Knights Sudoku

(Published on 16. August 2020, 10:55 by DukeBG)

Famous stardom knights are in town. Ugh, what arrogant fools! They think they are above the rules? Well, at least they still have some honour not to break the rules more than once.

This is a (anti)knight sudoku with a star-battle on top of it, where the cells marked with stars can break the anti-knight rule, though not more than once.

Formal rules:

Normal sudoku rules apply. Some cells are marked with stars (some of them given). There has to be two stars in every row, column and sudoku box. Stars cannot touch each other orthogonally or diagonally. Two cells separated by chess knight's move, if neither of them is marked with the star, cannot contain the same digit. The cells marked with the star cannot have two or more cells with the same digit chess knight's move away.

Clarification (just in case): star-marked cells don't necessarily have to break the anti-knight constraint.

solving online: f-puzzles, penpa

P.S. This is my first attempt at setting and uploading a puzzle, please be forgiving of any mistakes.

Solution code: Row 9 followed by Column 9


Solved by NikolaZ, MartinR, Genomico, marcmees, Imperial Marcher, Queteimp, cranken, kroutu, polar, JGLP, cdwg2000, zorant, Narayana, misko, Realshaggy
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Comments

on 16. August 2020, 23:34 by marcmees
nice puzzle

Last changed on 16. August 2020, 16:53

on 16. August 2020, 15:31 by DukeBG
Yes. There's no limitation as to what other cell of the broken constraint is like in terms of the star battle. As the rules state, the constraint is only in place if both cells do not have a mark.

Last changed on 16. August 2020, 15:20

on 16. August 2020, 15:20 by inixx
Can non-start cells break the anti-knight rule if the other cell is a star?

Difficulty:4
Rating:80 %
Solved:15 times
Observed:13 times
ID:00044M

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