1. Base
Normal Sudoku rules apply.
2. Kropki Dots
Cells joined by a white dot contain consecutive digits.
Cells joined by a black dot contain digits where one is double the other.
Not all possible white and black dots are necessarily given.
More Kropki Sudoku puzzles
This puzzle appears as puzzle #117 in my book
128 Handcrafted Kropki Sudoku.
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Lösungscode: Digits in row 3 (left to right).
Gestern, 18:18 Uhr von Adrian Klausen
Thank you for pointing this out^^
I will add a rule section that clarifies it.
Gestern, 18:03 Uhr von StefanSch
Following the definition of LM in a Kropki-puzzle alle black and white dots must be given: https://wiki.logic-masters.de/index.php/Kropki/en
It is ok to define other rules, but in this case it would be nice to ctearify this explictly.