Logic Masters Deutschland e.V.

Sudoku Variants Series (277) - Double Sandwich Sudoku

(Eingestellt am 15. Juli 2020, 00:00 Uhr von Richard)

Für dieses Sudoku-Varianten-Projekt habe ich geplant, jede Woche eine andere Sudokuvariante zu veröffentlichen. Ich werde sehen wie lange es dauert bis mir die Ideen ausgehen.

Double Sandwich Sudoku
Verwende die üblichen Sudoku-Regeln.
Hinweise außerhalb des Gitters geben die Summen der Ziffer(n) an, die in der entsprechenden Zeile oder Spalte zwischen den Ziffern 1, 5 und 9 liegen. Die Hinweiszahlen sind aufsteigend sortiert. Dabei spielt die Reihenfolge der Ziffern 1, 5 und 9 in der jeweiligen Zeile oder Spalte keine Rolle.

Die Anregung zu diesem Rätsel kommt von Christoph Seeliger Sudoku GP 2020 German/Dutch round.

Here you can solve the puzzle online. (Thanks to SudokuExplorer.)

Lösungscode: Zeile 1, gefolgt von Spalte 5.

Zuletzt geändert am 15. Juli 2020, 15:47 Uhr

Gelöst von Greg, r45, JGLP, Jesper, pandiani42, MartinR, Statistica, NikolaZ, kishy72, Senior, marcmees, henrypijames, sloffie, Nothere, azalozni, Luigi, dm_litv, rcg, SudokuExplorer, SirWoezel, Xavien , ... amitsowani, zorant, ildiko, karen_birgitta, 111chrisi, moss, Kwaka, ManuH, HaSe, Uhu, citizen, Shmartus, bob, mango, Acerola, Nylimb, pin7guin, AnnaTh, rimodech, zuzanina, sf2l, FzFeather, Rollo
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am 15. Juli 2020, 15:47 Uhr von Richard
Added link to Penpa.

Zuletzt geändert am 15. Juli 2020, 15:44 Uhr

am 15. Juli 2020, 11:53 Uhr von SudokuExplorer
Here's a penpa link to try it: https://tinyurl.com/y8bdnv8z
I'll have a go now as well.

@SudokuExplorer: thanks! I should learn how to do that too! (But I have to lift the stone I live under first! :-) )

Zuletzt geändert am 15. Juli 2020, 11:37 Uhr

am 15. Juli 2020, 11:37 Uhr von Richard
@henrypijames: you are right about that. As you may have discovered, I am very fond of aesthetics; I use it whenever possible. While setting puzzles, I don't always try to minimize the number of clues, since going over them again and again is really time consuming. And for this one: I know I used the bottom clue relatively early in my solve, so it is very likely the difficulty is influenced by it.

am 15. Juli 2020, 11:30 Uhr von Richard
@kishy72: That's correct!
I received and test solved Christophs puzzle in January or thereabout, found it suitable for the GP, put it aside and wrote 'Double Sandwich' on my SVS-list. I created this one in March, had it tested and put it aside to serve as practice material for the GP. (I had in mind to publish it a few days before the GP.) I realised far too late that the rules for the different puzzles were different when it comes to the order of the clues. So I decided to publish it only after the GP, so players were not confused before the competition. :-)

Zuletzt geändert am 15. Juli 2020, 11:10 Uhr

am 15. Juli 2020, 11:05 Uhr von henrypijames
By the time I arrived at the bottom row, the clues were no longer needed (and they weren't used before that either).

On second thought: They would have made things easier, of course, if I had paid attention...

am 15. Juli 2020, 10:45 Uhr von kishy72
Excellent construction. I initially broke the sudoku after about 6 mins assuming that the rules are exactly the same as the one in the GP until I realized they are not !

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