Twinned
(Published on 20. August 2026, 05:10 by marty_sears)
Rules:
Normal sudoku rules apply.
BLACK DOTS: If two digits are joined by a black dot, one is double the other.
WHITE DOTS: If two digits are joined by a white dot, they are consecutive.
X: If two digits are joined by an X, they sum to 10.
TWIN TOTALS: Two lines of the same colour are twins, meaning their digits have the same sum.
• GERMAN WHISPERS: Adjacent digits on a green line have a difference of at least 5.
• RENBANS: Digits on a pink line form a non-repeating, conseuctive sequence which can be arranged in any order along the line.
• REGION SUM LINES: Box borders divide a blue line into segments, each of which have the same sum.
• THERMOMETERS: Digits along a grey thermometer must strictly increase as they get further away from the bulb.
• PARITY LINES: On a red line, digits must alternate between even and odd.
• NABNERS: No two digits anywhere on a yellow line may be consecutive.
Solution code: Row 3 from left to right
Comments
on 4. September 2026, 17:35 by ThymePass
Another novel idea! This was a lot of fun to solve :)
on 4. September 2026, 06:01 by Vaurien
Definitely a 3* for me, but still an amazing puzzle!
on 30. August 2026, 01:07 by emoney1374
Fun idea with some cool steps!
on 26. August 2026, 22:38 by Klausku
Brilliant setting, as always. Could have finished faster but I kept forgetting about the twin rule. Thanks Marty.
on 26. August 2026, 21:48 by orenr
Wonderful! Thank you!!!
on 23. August 2026, 18:13 by D3M4R
Marty the goat
on 23. August 2026, 07:28 by Crusader175
Very fun!
on 22. August 2026, 17:34 by kasperd
The twin rule is quite unusual. The implications were not exactly what I expected.
I now wonder if these rules could have worked without thermometers.
on 21. August 2026, 21:02 by s1mn
Ooh, that was lovely
on 21. August 2026, 11:03 by bboom
Very approachable with some fun deductions to figure out. And I love the aesthetics!
on 20. August 2026, 20:38 by amchap
Lovely. Thanks.
on 20. August 2026, 16:56 by Arheus
Exquisite as always, Marty! A very enjoyable 2* for me
on 20. August 2026, 14:23 by Thanos13
Beautiful looking + Beautiful logic = Puzzler's dream
on 20. August 2026, 14:15 by Franjo
Thank you very much for creating and sharing another beautiful puzzle. How the symmetry breaks is amazing!
on 20. August 2026, 12:54 by highonlife
Beautiful puzzle.
Between 3-4* because there was some tricky logic in between.
on 20. August 2026, 12:24 by mscha
Beautiful break-in! When I got it, I expected the puzzle to be over, but there were still some deductions to be done.
3 stars for me.
on 20. August 2026, 11:25 by GeorgeTheToad2
Amazing.
on 20. August 2026, 06:04 by Saltensity
I loved how the twin totals constraints felt so unrestrictive, until I found the break-in. Really nice puzzle!
on 20. August 2026, 06:00 by Tortugo
This was a very classic feeling variant sudoku challenge but I love that it uses just about every common rule type and with beautiful symmetry that is just imperfect enough to yield a unique solution. I also enjoyed that there were still little deductions to be made so late in the solve.
