Triple Trouble
(Published on 6. December 2025, 14:02 by marty_sears)
TRIPLE TROUBLE: Fill the grid with the digits 1-9, so that no digit repeats in any row or column. Each marked 3x3 box may only contain three distinct digits.
ARROWS: Digits along a purple arrow sum to the digit in the attached circle.
GERMAN WHISPERS: Adjacent digits on a green line have a difference of at least 5.
SAME DIFFERENCE: Adjacent digits along a turquoise line always have the same difference. This difference must be determined for each turquoise line.
NABNERS: No two digits on a yellow line may be the same or consecutive.
BLACK DOTS: If two digits are separated by a black dot, then one is double the other.
Solution code: Row 9 from left to right
Comments
on 22. December 2025, 10:58 by darkgently
I love Marty's puzzles because every ludicrous possibility is exploited; whenever you think, "It'd be funny if that was X" then it will definitely be X.
I'm looking at you, long turquoise line.
on 14. December 2025, 20:41 by silent_rob
Tricky but fun - thanks, Marty! Interesting line and box interactions throughout (and played with my expectations following the one other puzzle I saw with the Triple Trouble ruleset).
on 13. December 2025, 18:47 by Klausku
That was fun! And not too difficult once you understand the geometry. Thanks Marty.
on 11. December 2025, 12:34 by vfig
definitely a learning curve to understanding the implications of the three digits rule. “triple trouble” was right, cause it took me three separate attempts to solve this one!
on 8. December 2025, 19:06 by Exigus
Lovely puzzle, great fun! Thanks!
on 7. December 2025, 16:26 by mscha
Oof, that was tricky!
The dynamics of this tridoku (?) are very different from sudoku. But even after figuring out the consequences, it took me forever to find a break-in. Once I had that, it didn't take me long to finish.
Very nice, but definitely more than 3 stars for me!
on 7. December 2025, 15:05 by mir85
How? This feels like it should be impossible every step of the way. Yet, it's not that difficult! And so much fun :D
How???
on 7. December 2025, 05:08 by Crusader175
Lovely!
on 6. December 2025, 17:01 by Franjo
I tried the original version and found to my surprise - well, what others found, too. I desperately searched for my mistake(s), but … Well, now I understand. Even the greatest minds may overlook something. Anyway, I did enjoy the time I spent solving this lovely puzzle. Thank you very much for creating and sharing.
on 6. December 2025, 16:14 by redgecko
Excellent as always and thanks for the update Marty. Had been staring at this for 30 mins to try and disambiguate.
Marty: I am a doofus sometimes!
on 6. December 2025, 14:43 by sujoyku
Thank you for this fun puzzle, Marty!
