Spiraling Circles
(Published on 17. July 2025, 22:43 by Pulsar)
Rules:
Place the digits 1-9 once each into every row and column.
A digit in a circle indicates the number of circles that contain that digit.
Links:
SudokupadFeature video on Cracking The Cryptic
Solution Guide (includes a discussion of several intriguing patterns)
This puzzle is a direct sequel to the wonderful puzzle Hypnotic Suggestion by Atticus837, and is based on the same idea. It reveals some fascinating symmetries!
Solution code: row 5
Comments
on 8. September 2025, 03:43 by e401
Very fun
on 20. July 2025, 19:24 by Rollo
Sehr elegant :-).
on 18. July 2025, 21:04 by Tulrak
Very nice, finished in 3:13, about the time it usually takes me to crack a 4x4 sudoku ;)
on 18. July 2025, 18:48 by Cheesix
I Love, Love, Love, Love, LOOOOOOOOVE these puzzles! This was a wonderful quick solve and I can't wait to see more of these!
on 18. July 2025, 18:12 by Ganbatte
This puzzle was very pleasant to solve.
on 18. July 2025, 05:22 by Karitsu
Loved how these digits just practically filled themselves in! Excellent puzzle for just before bed when I’m feeling a bit drowsy. It’s the perfect trifecta of not being too difficult, still very interesting, and the spiral is so hypnotizing I’m ready to sleep! (As you can no doubt tell from my written rambling.)
on 18. July 2025, 04:24 by Fisherman
Outstanding. So are related puzzles Hypnotic Suggestions and Parity Parity. Our cups runneth over.
on 18. July 2025, 04:20 by Atticus837
I love this. The spiral logic is so much smoother and cleaner than my version! Hats off to you Pulsar.
