Ouroboros
(Published on 1. October 2025, 14:16 by dingdongeu)
My debut puzzle.
Choosing a circular/spiral theme, I tried to make an entertaining puzzle, and I think it came out quite nicely.
- Sudoku: Normal sudoku rules apply.
- Kropki: Cells joined by a black Kropki dot have a ratio of 1:2
- Thermometer: Along this line, digits strictly increase starting from the bulb.
- Killer cages: Digits in a cage must sum up to the digit in the top left (if given) and cannot repeat.
- Renban Line: The purple Renban line contains a set of consecutive digits in any order.
- German Whispers: Any two cells joined by a green line must have a difference of at least 5.
- Region Sum: For each line, digits have an equal sum for each box they pass through.
Play it on Sudokupad here.
Choosing a circular/spiral theme, I tried to make an entertaining puzzle, and I think it came out quite nicely.
- Sudoku: Normal sudoku rules apply.
- Kropki: Cells joined by a black Kropki dot have a ratio of 1:2
- Thermometer: Along this line, digits strictly increase starting from the bulb.
- Killer cages: Digits in a cage must sum up to the digit in the top left (if given) and cannot repeat.
- Renban Line: The purple Renban line contains a set of consecutive digits in any order.
- German Whispers: Any two cells joined by a green line must have a difference of at least 5.
- Region Sum: For each line, digits have an equal sum for each box they pass through.
Play it on Sudokupad here.
Solution code: Column 8 and 9 in sequence.
Solved by vollbesonderbar, 5381, Duarte-Carvalho, wjdrumm, sujoyku, jalebc, mezkur7, naggy, m_and_m_toastie, EmX68, gdc, clock, SKORP17, PinkNickels, AutoNick, CalvinM, keenbowl, Zibl, Mozart40, spamus, ... kyuquu, paranoid, Megalobrainiac, Supalea, Altynbek , palpot, Crul, StfC, Postnormal, Iluvsodah, Kräuterbutter, lovely7998, Ndstripes, JRaunak, galium_odoratum, dielilla, Sudokode, bereolosp
Comments
on 3. October 2025, 11:04 by Onyx
7:44, very nice puzzle, entertaining indeed, good job!
on 2. October 2025, 08:09 by Peteronium
16 minutes. There are plenty 1* puzzles which take me longer. Thx for sharing
on 1. October 2025, 20:06 by Zibl
Great puzzle, thank you!
on 1. October 2025, 19:14 by PinkNickels
Very nice! THanks for sharing with us. If I may, most solvers prefer a one line (one row or one column) solution. But, it is of course your decision. Glad you decided to share. Very fun solve.
on 1. October 2025, 15:08 by sujoyku
Thank you for the fun puzzle, dingdongeu!
