Logic Masters Deutschland e.V.


(Eingestellt am 9. März 2023, 08:00 Uhr von Nordy)

Ambiguous Renbans and Whispers continue to be intriguing—this time with Region Sum Lines. Difficulty estimated at 3-3.5 stars. For a warm up, see Aftershock.


Normal Sudoku: Place the digits 1 to 9 in every row, column, and 3x3 box.

Certainty—Region Sum Lines

  • Each line is a Region Sum line
  • Digits on a Region Sum line have an equal sum N within each box that the line passes through
  • If a line passes through the same box more than once, each individual segment within that box sums to N separately (note Box 2)
  • Different lines may have different sums

Ambiguity—Renbans or Whispers

  • Additionally, each line is either a Renban line or a German Whisper line, such that:
  • Digits on a Renban line form a set of consecutive digits in any order
  • Adjacent digits on a German Whisper line differ by at least 5

Solve online:

Lösungscode: Row 9

Zuletzt geändert -

Gelöst von gutman, Fw1728, efnenu, henrypijames, tuturitu, Ragna, lianarox, Mad-Tyas, TeamSchmidt, Qodec, Phistomefel, Bjd, zuzanina, picoton, mathpesto, udukos, StefanSch, SKORP17, LehanLehan, AvonD, ... Mr_tn, Piatato, lars, Lizzy01, thoughtbyte, glum_hippo, galgamer, abed hawila, damasosos92, Luzju04, rmm466ss, wrightbr3, Crul, OGRussHood, darrenfwl, loigor4, TJReds, tuckerbucket, Frutlop
Komplette Liste


am 15. Mai 2023, 06:51 Uhr von TJReds
Absolutely beautiful logic between the renbans and equal sum lines that I'd never seen before!

am 11. März 2023, 02:58 Uhr von damasosos92
Fun puzzle! Thank you, Nordy!

am 10. März 2023, 16:52 Uhr von glum_hippo
Pretty... pretty

am 10. März 2023, 13:55 Uhr von Piatato
Lovely puzzle, thanks!

am 10. März 2023, 11:28 Uhr von farodin64
Beautiful puzzle, very entertaining! Thanks for the fun!

am 10. März 2023, 03:18 Uhr von topoi
Nice deductions here, and a solve path that's smooth as butter.

am 9. März 2023, 20:50 Uhr von picoton
what a nice puzzle!

am 9. März 2023, 18:31 Uhr von Phistomefel
Fun puzzle! Thanks, Nordy! :)

am 9. März 2023, 15:11 Uhr von Ragna
WOW! What a gorgeous puzzle!
Such a magnificent logic.
Thank you very much for sharing, Nordy. :-)))

am 9. März 2023, 13:52 Uhr von efnenu
Whenever I found myself thinking: surely that is not the question I have to ask now - that was exactly the question I had to ask. Brilliant work!

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Variantenkombination Online-Solving-Tool

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