Colours in the (k)night XVI
(Published on 27. October 2025, 21:22 by Villse)
Next installment in my “Colours in the (k)night” series. I hope you enjoy it :)
Links to the previous parts of the series are given after the rules.
Rules:
Normal Sudoku rules apply. Place the digits 1–9 once in every row, column, and 3×3 box.
Anti-Knight: Cells a knight’s move apart in chess cannot contain the same digit.
XV: Cells separated by a V sum to 5; cells separated by an X sum to 10. Not all Vs and Xs are necessarily given.
Positive diagonal: Digits along the positive diagonal cannot repeat.
Magic square: Somewhere in the grid lies a 3×3 magic square, which contains all digits from 1 to 9 exactly once and in which every row, column, and diagonal adds to the same total. It’s up to the solver to determine the location of the magic square.
Solve online:Sudokupad
Happy solving!
Here are the links to the previous parts of the series:
Solution code: Column 4 (9 digits)
Comments
on 29. October 2025, 13:16 by Frankster
Another excellent addition to the series. And clever stuff to feature the magic square!
on 28. October 2025, 22:58 by dzamie
Oh, neat. I was wondering how to disambiguate between the 5 and a color that hadn't appeared in an X yet. Turns out, I'd forgotten the magic square rule.
on 28. October 2025, 22:21 by Pseudonym27182
Very nice. The magic square clue was a lot of fun to figure out.
on 28. October 2025, 14:17 by superkinkel
Great one, but I think it would not be a spoiler to state that the magic square is not neccesarily aligned with a box. Took me ages to figure that out ... once I reread the rules for the umpteenth time it somehow occured to me ...
on 28. October 2025, 14:03 by matthew.v
Another great entry in the series! Thanks for the puzzle!
on 28. October 2025, 10:07 by damo_89
Very cool how just the magic square resolves all the digits.
on 28. October 2025, 08:58 by Ahmedddd
very nice puzzle, took me 47min
on 28. October 2025, 08:20 by AngusWBA
I loved this puzzle! Took me just over an hour and every second was enjoyable, thanks.
on 28. October 2025, 04:14 by illandres
Love solving this series as it keeps coming!
on 27. October 2025, 22:57 by neuq
Finding the hidden magic square seemed daunting at first, but wasn't _too hard_. I enjoyed it. Thanks for the puzzle!
on 27. October 2025, 22:54 by Deusmaximus
I am a big Fan of the entire series and this one was also very enjoyable :) looking forward to more
