Circular Reasoning
(Published on 1. September 2023, 02:43 by marty_sears)
This puzzle was the origin of 'counting circles' :)
Rules:
- Normal sudoku rules apply.
- A circled digit indicates exactly how many circles contain that digit.
- Digits along an arrow sum to the digit in the attached circle.
Click here to play on the CTC app
Click here to watch Simon's solve on CTC
Please leave a comment if you enjoy :)
Solution code: Row 3, from left to right
Comments
on 8. February 2025, 16:45 by ako
Got stuck a little, when I tried to solve the 6th number-to-go-to before the 5th. Great learning tho; usually I hate scanning - this one served me a lot on that issue.
Brilliant and fun! Thank you!
on 22. October 2024, 03:17 by jakestilesowen
Brilliant and elegant and fun.
on 15. April 2024, 09:09 by ninjamunk
That was an experience!! Very impressive puzzle
on 9. April 2024, 07:39 by Nordy
Late to the party, but glad I finally showed up! I found some of the logic quite unexpected, which to me is always greatly enjoyable :)
on 22. January 2024, 04:13 by juggler
So cool that this is the puzzle that introduced Counting Circles! It definitely made my brain hurt, but in a good way. There's a clean solve path and so many clever surprises that I lost count (no pun intended). Very creative indeed.
on 6. October 2023, 11:38 by glum_hippo
I think it would be fabulous if you could come up with a name for this constraint :) It definitely has considerable potential!
Reply: Thanks for the comment :) These are called 'Counting Circles', and I'm glad to see quite a few people have started using that name in their puzzles already
on 19. September 2023, 11:14 by by81996672
Fun puzzle.Thanks.
on 19. September 2023, 07:37 by Carolin
Beautiful puzzle!
on 15. September 2023, 08:59 by St9
It took me forever to figure out the break-in. After that ah-ha moment, it was sheer joy.
on 14. September 2023, 05:11 by Knickolas
Really really cool stuff! :)
on 12. September 2023, 18:24 by Nightmare2805
Fantastic Puzzle.
on 12. September 2023, 00:02 by hungkenchanlee
For some reason I wasn't thinking that the circle with arrows counted as circles.... Pretty fun once I realized they counted.
on 10. September 2023, 18:39 by jwsinclair
Enjoyed this a lot. It's rare enough to find a puzzle with a ruleset that's both innovative and simple, and on top of that it's beautifully executed.
on 8. September 2023, 22:09 by Blashyrkh
Brilliant idea, brilliant execution, and a very satisfying solve!
on 8. September 2023, 15:55 by MartinR
Enjoyed this, the "a-ha" moment at the beginning when the break-in reveals itself is great
on 7. September 2023, 09:37 by rhodri
This is just a dream puzzle. So clever.
on 3. September 2023, 23:57 by jellef
That's a whole new dimension to solve a puzzle with :D
on 2. September 2023, 09:48 by Snookerfan
Very nice, original and fun! Thank you
on 2. September 2023, 04:01 by Kallor
Wow, I enjoyed this a lot! Very fun figuring out its inner logic.
on 1. September 2023, 19:56 by keenbowl
Thanks for setting and sharing this puzzle, it was fun to solve.
on 1. September 2023, 11:09 by chenws
Fun puzzle!Thank you!
