Day 2: Circles
(Published on 2. December 2025, 06:00 by SharpFox)
- Normal 4×4 Sudoku rules apply.
- A digit N in a circle indicates that this digits appears exactly N times in circles. For example, a 3 in a circle means there are exactly three 3s in circles.
- Exactly one gray dot each acts as one of the following:
- It separates two consecutive digits or
- It joins two digits where one is double the other (black dot as yesterday).
Solution code: Row 1 (4 digits):
Comments
on 5. January 2026, 09:45 by PhoenixAki
Went a bit too hard on the hinting in the rules IMO. Described the concept of the grey dots very well in a way that expects the solver to think a bit, just to immediately explain what to do about it (saying one dot has to be black and the other white). The logic itself was actually quite nice afterwards.
on 21. December 2025, 02:45 by damasosos92
Perfectly executed!
on 13. December 2025, 15:46 by Wasserkocher
Great Sudoku again!
on 7. December 2025, 16:38 by ACK
Great!
on 7. December 2025, 02:00 by Aronana
Very Fun Very Fast
on 6. December 2025, 01:02 by marajade
What a beautiful bite-sized puzzle!
on 5. December 2025, 15:02 by detlev007
it was maybe even to easy as well but in opinion better than teh first one
on 4. December 2025, 21:20 by Nakedsinglehunter
Sehr schön :)
on 4. December 2025, 16:24 by sandini
Quite nice little puzzle. Though I think the dot in column 1 is unnecessary.
on 4. December 2025, 06:37 by Vara9850
Very Fun Puzzle!
on 4. December 2025, 00:30 by Ol-Jay
@Rollo: Es waren knapp über 70%, als ich meinen Kommentar geschrieben habe.
on 3. December 2025, 09:57 by supersim2000
Thank you :)
on 2. December 2025, 21:56 by Supertaster
I've never had a real life advent calendar, so it's really lovely having your little puzzle advent calendar. Many thanks!
on 2. December 2025, 18:30 by Rollo
Ich genieße diese kleinen Rätsel auch sehr. Ich finde 81% (z.Z.) keine niedrige Bewertung, es könnten alle mit 'gut' oder 'sehr gut' gewertet haben.
on 2. December 2025, 14:08 by Ol-Jay
I don't understand where the low rating is coming from. I've got a feeling that some people rate very easy puzzle very low on principal.
I enjoy your tiny little advent calender very much! :)
