Standard sudoku rules apply: The digits 1 through 9 appear in every row, column, and box.
The coloured dominoes have a difference in their digits that is the same within every colour. E.g. if the red dots represent a difference of 3, all dominoes with a red dot have a difference of 3.
No two colours have the same difference.
No negative constraint: for each colour not necessarly all dots are given.
Digits along the marked diagonal do not repeat.
German Whispers: Usually shown as green lines, adjacent digits along a German Whispers line must differ by at least five.
Kropki pairs: Digits in cells separated by a black dot are in a 2:1 ratio. Not all dots are necessarily given.
Solution code: Row 3 left to right.
on 27. May 2024, 14:50 by Virux
Amazing! Had a blast solving this one.
on 24. May 2024, 05:56 by peterkp
Excellent puzzle. I found it simple to start but hard in the middle. I guess like all puzzles, it depends where you look.
on 23. May 2024, 21:34 by NRB
That was sublime!! Took a little bit of thinking at the beginning but once you figure out a couple of the dots it flowed really nicely. Really nice 3* puzzle.