Logic Masters Deutschland e.V.

Counting Sum Lines

(Published on 28. April 2026, 21:23 by mimec)

This week's puzzle combines two of my favorite sudoku rules: region sum lines and counting circles.

Previous puzzles in this series:

Rules:

  • Normal sudoku rules apply.
  • Box borders divide each blue line into segments with the same sum. Different lines may have different sums.
  • A blue circle indicates exactly how many circles contain that digit. For example, if there is a 4 in any circle, then exactly 4 circles contain a 4.

Play online on SudokuPad

Solution code: Row 9

Last changed on -

Solved by SKORP17, idanz, cmigas, nunc, StevenS, Piff, lina_hyena, barfurth, Omar1234, jordanza, Krisonium, Calesch, Archon, dickey, pmatos, root_vegetable, nyxie, achim-t, MalkoMann2, louis0, teuthida, Janie, ... Nagesh, ManuH, harwiltz, plinke, LeoVici, Tompzini, alconja, cschwartz05, SpeedHacked, abihummel, roscommon, jennyaa, WildEnte, valacd, Hima, abed hawila, Nosferatu, Lithium-Ion, ashwin, jalebc
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Comments

on 15. May 2026, 17:31 by valacd
I found it harder than expected for 2 stars, but very nice logic!

on 30. April 2026, 18:57 by Franjo
Thank you very much for creating and sharing this lovely CL-puzzle.

on 29. April 2026, 18:11 by Archon
Very nice flow on this one, felt like setting up dominoes then watching them neatly fall.

on 29. April 2026, 02:57 by barfurth
I found this one harder than the previous two. A few actual challenges to get going, but then it flowed nicely.

on 28. April 2026, 23:15 by nunc
Beautiful little GAS.

Difficulty:2
Rating:95 %
Solved:48 times
Observed:0 times
ID:000SJ3

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