Logic Masters Deutschland e.V.

Die Hotelrezeption (German Whispers/Numbered Rooms)

(Published on 3. May 2026, 00:18 by damo_89)

German Whispers and Numbered Rooms both absolute S tier constraints, so why not combine them? Consensus testing estimate was 2 to 3 stars. Good luck!

  • Normal sudoku rules apply: Place the digits 1 to 9 once each in every row, column, and 3x3 box
  • German Whispers: Adjacent digits on a green line must differ by at least 5
  • Numbered Rooms: Clues outside the grid give the digit to be placed in the Nth position in that row or column, where N is the digit in the first cell. Numbered rooms are to be determined by the solver

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Download full solution guide (PDF)

Numbered Rooms Example
If you are new to numbered rooms they can look a bit intimidating. This image should clarify how they work. The 3 in R1C1 is saying to place 7 in the 3rd position, i.e. R1C3. The 6 in R1C9 is saying to place the 9 in the 6th position, i.e. R1C4. The 2 in R1C5 is saying to place 8 in the 2nd position, i.e. R2C5.

Solution code: Row 7 (digits in the grid only - 9 digits)

Last changed on on 20. June 2026, 18:29

Solved by emoney1374, idanz, Perladel, Dr Logic, jguer, tuturitu, Crusader175, Bellsita, by81996672, killer_rectangle, sandmoppe, hige, crashkaths, Silentdodo, CitrusGremlin, ebulku, SKORP17, arteful, cg24, ... ad1643, ofsmul, misko, dingledork, macmillan333, Tompzini, lina_hyena, nyxie, Derpy, abihummel, mathpesto, givee10, Photyne, gnidan, GinaT86, Janie, 91loves, lgastako, Frank Puzzles, geronimo92
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Comments

on 20. June 2026, 18:29 by damo_89
Added image example for Numbered Rooms

on 4. May 2026, 13:53 by Qodec
Very, very nice!

on 3. May 2026, 17:42 by rojspencer
Very nice puzzle.

on 3. May 2026, 15:48 by CitrusGremlin
fun puzzle!!

on 3. May 2026, 04:30 by Crusader175
Fun puzzle!

on 3. May 2026, 01:33 by Dr Logic
WOW. What a puzzle!

Last changed on 20. June 2026, 18:30

on 3. May 2026, 01:12 by Perladel
This puzzle was lots of fun!
Anyway I would specify something about the direction of the numbered rooms contraint

Damo: That is a good point. I've added an image example that should hopefully clarify for people seeing numbered rooms for the first time

Difficulty:2
Rating:94 %
Solved:54 times
Observed:0 times
ID:000SG1

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