Rules:
Normal sudoku rules apply.
CAGES: Digits MAY repeat in a blue cage, and sum to the small clue displayed in the corner.
BLACK KROPKI: If two digits are joined by a black dot, one is double the other.
RENBAN: Digits along a pink line form a non-repeating consecutive sequence that can be arranged in any order.
GERMAN WHISPER: The two digits on a green line have a difference of at least 5.
Solution code: Column 5 reading downwards
on 25. November 2025, 05:39 by silent_rob
Thanks for a great puzzle, Marty! A nice break-in to start and then II found it more challenging before a very satisfying ending and fun throughout.
on 18. November 2025, 12:30 by Zelfie
Enjoyed this so much, there were some lovely interactions.
on 20. October 2025, 23:05 by cbossut
Fast 3* for me with 22:33, but still felt like 3*. I think beeing used to your style helps a lot in quickly spotting the next step.
Some steps were really tricky, but as usual, so well designed, brillant !
What about Finkz though? :-P
Marty: thankyou for the kind words. Phase 3 is under development and Finkz will be back soon :)
on 18. October 2025, 20:16 by davidz32z
Very nice looking puzzle that's very nice to solve!
on 14. October 2025, 22:02 by Glasgow
Maybe I got lucky spotting something fast mid-puzzle but this seemed closer to 1* than 3* to me. Around 15 minutes to solve. Overall a nice little snack. Thanks!
Marty: reactions have varied to this a lot, difficulty wise. After the approachable break-in, a lot of people are really struggling with the rest, with some saying 4 star. Initially the puzzle was published without the pink triangles - the puzzle is still solvable but is even harder
on 14. October 2025, 13:25 by Klausku
Can‘t remember, when I could fill in that many digit in the first minutes. But then it got tricky. Great puzzle, I love the symmetry. Thanks Marty.
on 14. October 2025, 10:08 by v8nagrom
As others said, the easy beginning misleads you believing it will be a quick run but around halftime you just stare at the grid searching for that one cell that will save you.
Very nice Marty, as always!
on 14. October 2025, 04:31 by Zinger2099
Heeeeey Marty Sears never fails to impress with the way his approachable-yet-challenging puzzles engage and entertain. I had fun. Was a good puzzle to do as my first one back after a hiatus! Hope to do more soon.
on 13. October 2025, 20:33 by mscha
Very original puzzle, with a surprisingly easy start.
But unfortunately, with a very frustrating endgame where I just stared at digits for half an hour until I finally figured out something.
on 13. October 2025, 15:39 by googuee
Nice Puzzle! Enjoyed solving it!
on 13. October 2025, 13:53 by Franjo
Brilliant idea with a beautiful and easy start. Then I had to think much harder to find the right path. Thank you very much for creating and sharing this amazing puzzle.
on 13. October 2025, 11:18 by Nylimb
Amazing! Is this the first ever completely symmetric sudoku?
Marty: definitely not. There's plenty that are in completely blank grids. And I have one called Either Way Up which has a given 6 and 9
Nylimb: Thanks. I'll have to try Either Way Up.
on 13. October 2025, 00:30 by wuc
Solved it without the triangles. Hard mid solve with a bit of look ahead. 4* to me. Bit me through. Great fun tjx.
on 13. October 2025, 00:23 by CaptRob
Great puzzle! Thanks a lot
on 12. October 2025, 23:46 by Calvinball
Really enjoyed that! Thanks Marty, you nailed it.
on 12. October 2025, 23:21 by sujoyku
Thank you for this lovely puzzle, Marty! The opening made me smile already. :)