Sudoku Variants Series (405) - Weiqi
(Published on 3. January 2025, 12:00 by Richard)
Logic solvable
Weiqi
Inspiration for this type comes from WSC2024.
Solve online in Penpa+ or in Sudokupad.
Like all of my sudoku variants, this puzzle can be solved by logic alone. Guessing is not required and also no sophisticated solving techniques are necessary; just plain and easy sudoku steps and of course the intrinsic logic this specific variant has to offer. In case you don't find that logic or get stuck, feel free to ask for a hint in the comments below this puzzle and I'll be happy to help you.
Apply classic sudoku rules.
For any black circle the sum of digits placed in adjoining cells is greater than 19 (2 by 2 cells), 9 (two border cells), or 4 (one corner cell), respectively. For any white circle, the sum of digits is smaller than 19, 9 or 4. All possible circles are given.
Solution code: Row 5.
Comments
on 16. January 2025, 13:50 by glum_hippo
Luschtig, luschtig.. popuschtig! Hat mich gefreut.
on 10. January 2025, 18:04 by Zzzyxas
Wenn man statt »Alle möglichen Kreise sind gegeben« »Alle möglichen weißen Kreise sind gegeben« liest, geht es irgendwann nicht weiter.
on 7. January 2025, 01:20 by dzamie
Took a bit to get used to the ruleset... and to remember the negative constraint. Solved very well, though!
on 3. January 2025, 19:50 by Franjo
Nice and very easy - a clear 1*-star-puzzle once you realize that … Thank you very much for sharing this funny idea.
