Logic Masters Deutschland e.V.

Dos and Dots

(Published on 25. April 2026, 11:30 by Wuschel)

  • Normal Sudoku rules: Place the digits 1-9 in each row, column and box, without repeats.
  • Region sum lines: Box borders split blue lines into segments with the same sum.
  • Ratio dots: On a black dot, one digit is double the other.
  • Difference dots: Digits on a white dot differ by 1.

Play online

Solution code: Row 9


Solved by RailMan, sujoyku, azalzamil2005, bloodhovnds, damo_89, Ragna, charliek, alx, idanz, efnenu, Amedoru, BULL-TT, SKORP17, tuturitu, Zzzzz..., dickey, Adrian71, ___, goldensun, M8tyw31, GorgeousNicko, ... rjo246, Ambrose, josemadre, koiking, tez, Kolobra, cschwartz05, trazere, SpecSheets, DaniK, erkiraak, quinnikins, Wiebbe, sisterbear, ignigomoreno, BlackApolloX, agvard, OGRussHood, timww572
Full list

Comments

on 30. April 2026, 18:41 by BorisTheSnake
Beautiful how it all came together, very unexpected at first glance. Thank you for a wonderful puzzle :)

on 27. April 2026, 22:27 by Snaques
This one flowed really nicely. From time consumed I'd say it's more like a 1*, but maybe the logic required turned it barely into a 2*.

Very fun regardless.

on 26. April 2026, 19:50 by harwiltz
This was extremely fun. Like grantmnz, I was surprised this could have a unique solution, but once you get the ball rolling it doesn't stop.

on 26. April 2026, 13:39 by rojspencer
Nice construction and enjoyable solve.

on 26. April 2026, 12:55 by wuc
Great break in. Hard peak early to me 3*. Then smooth 2*. Great setting thx.

on 26. April 2026, 11:12 by VitP
(not) chocolate teapot hints:
1) 7 is an odd number
2) 1 + 1 = 2

on 26. April 2026, 09:21 by grantmnz
This one pushed me hard but I'm glad I stuck with it. I find it amazing that this has a unique solution it really didn't seem like there was enough information.

on 26. April 2026, 00:31 by wuc
Great break in. Hard peak early to me 3*. Then smooth 2*. Great setting thx.

on 25. April 2026, 20:52 by baltoguy
silky is an excellent word to describe this puzzle.

on 25. April 2026, 19:23 by Adrian71
Such a silky smooth solve path, great setting, thanks for sharing!

on 25. April 2026, 13:15 by Ragna
That was fun! Thank you. :-)

on 25. April 2026, 12:11 by sujoyku
Very fun puzzle! Thank you, Wuschel!

Difficulty:2
Rating:97 %
Solved:173 times
Observed:2 times
ID:000SHJ

Enter solution

Solution code:

Login