Logic Masters Deutschland e.V.

Easy Peasy Sudoku Advent (18) - Snake

(Eingestellt am 18. Dezember 2025, 06:00 Uhr von Richard)

Dieser Sudoku-Adventskalender enthält 24 Varianten, die in meiner Sudoku Variants Series (SVS) enthalten waren, sich jedoch als zu schwierig erwiesen haben, um von einer breiten Masse an Rätselfreunden gelöst zu werden. Ich strebe einen Schwierigkeitsgrad von 1 bis 2 Sternen an und habe auch einige allgemeine und/oder spezifische Hinweise geschrieben.
Ich hoffe, dass einige Rätsler nach dem Lösen der Adventsversion das ursprüngliche SVS-Rätsel #147 ausprobieren werden.

Snake
Verwende die üblichen Sudoku-Regeln.
Weiter ist eine Schlange der Form 123456789123... so einzutragen, dass Kopf und Schwanz auf den grauen Feldern liegen. Die Schlange lauft horizontal und vertika, berührt sich nicht selbst, auch nicht diagonal, und sie beginnt mit einer 1 und endet mit einer 9.

Spezifischer Hinweis:

Die Platzierung der 8 in Block 6 zwingt den Kreis dazu, die 1 zu sein. Die Platzierung der 4 in Block 3, der 2 in Block 4 und der 3 in Block 5 zeigen die ersten Bewegungen der Schlange an.
Nutze die Tatsache, dass sich die Schlange nicht selbst berühren darf!

Solve online in Sudokupad or in Penpa+.

Lösungscode: Spalte 2

Zuletzt geändert am 18. Dezember 2025, 07:02 Uhr

Gelöst von Nylimb, wuc, Piatato, r45, Kino, tuturitu, jalebc, cornuto, zeniko, tjmas, tretro, TeddieMilo, Majesteit, flip1995, chbbyy04, vidarino, Postnormal, rcg, goodcity, Counterfeitly, azalozni, Statistica, ... ProcrastinationQueen, Dermerlin, thomamas, sudokuphile, mbumbee, Tompzini, ildiko, garycblack, Nothere, turte123, Visse, Rcolley5, jsxft, Teo, elpadrinoIV, davidyay, sysheep, Phase Queen Rachel
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Kommentare

am 20. Dezember 2025, 15:33 Uhr von henrypijames
@ProcrastinationQueen: I too often use the solution check on the first digits I put in so as to confirm that I've understood the rules correctly!

am 20. Dezember 2025, 04:41 Uhr von Piatato
I for one prefer there not being solution check, as I think it very slightly cheapens the experience when there is one. Solving a puzzle feels all that much better when the stakes are a little higher.

Zuletzt geändert am 20. Dezember 2025, 04:08 Uhr

am 20. Dezember 2025, 04:07 Uhr von Decapod
I hate puzzles without solution checking. I solved it anyway just so I could reflect this in my rating.

Zuletzt geändert am 20. Dezember 2025, 05:00 Uhr

am 20. Dezember 2025, 04:03 Uhr von ProcrastinationQueen
For the easy advent series, I think solution checking would make the puzzles more accessible. When I do a variant sudoku of a variant I have not encountered before (like this one), it helps me check for the first few steps if I understood the rules correctly. While the hint helped me enough in this one, I just gave up on cold arrows because I couldn't be sure I understood the rule ¯_(ツ)_/¯
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Reply: thanks for your comment. I have let my mind go over the solution checking issue in the past few days, and what you describe is one of the reasons why I have decided to provide links with solution checking for the last five calendar puzzles. As an experiment.

am 19. Dezember 2025, 06:11 Uhr von henrypijames
I like solution check. But I think it should be the author's choice whether to include it in the puzzle. I'm slightly less likely to take on or keep working at a puzzle without a solution check, but if the author is okay with this consequence then I am too.

am 18. Dezember 2025, 23:46 Uhr von AshBrown
Nice easy snake. Deffo don't need solution checking on for this.

am 18. Dezember 2025, 23:15 Uhr von SennyK
Nice and easy, thank you!

am 18. Dezember 2025, 19:08 Uhr von dzamie
I usually struggle with snake puzzles, but this was actually incredibly easy!

Tossing in my 2 cents, I'm more likely to actually keep solving a puzzle if I know I went wrong seven filled digits ago, rather than "sometime in the last hour." However, I'm also okay with approaching hard puzzles with the knowledge that there's a good chance I'll have to come back to it another day, if at all.
My favorite method, although not really applicable to most of your puzzles in particular, is with shading/chaos construction puzzles, where the solution code includes non-digit information such as "row 6 with a - to indicate region barriers" or "digits in shaded cells from rows 3 and 4." It makes it more bearable to backtrack after a mistake, but also means that you still can't solve the puzzle if you don't really understand the logic.

Zuletzt geändert am 18. Dezember 2025, 11:43 Uhr

am 18. Dezember 2025, 10:33 Uhr von knightry
That's pretty silly, to be honest. Solution checking adds accessibility to those who want it, and takes away nothing from those who don't want to use it. But suit yourself.
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Reply: I think my puzzles and sudokus are designed in such a way that you can place every digit or do every eliminiation with certainty, such that you don't need to check if you did it right.
I certainly don't want to encourage 'solving' a hard puzzle by checking with every digit if it's correct.
But maybe for these easy puzzles in the Advent Series, it can be different. I have planned to ask for feedback after the series is finished, at #24 next week. I am curious what kind of feedback that provides.
I also come from an era where it was normal to print out puzzles and solve them on paper. I am in charge of our own national sudoku championship and there it is still the habit to solve on paper too. Maybe there is a correlation with that too.

am 18. Dezember 2025, 09:14 Uhr von JVA
Very nice puzzle. I had to read the hint to have the confidence to place 19 in both circles :P

am 18. Dezember 2025, 08:04 Uhr von TeddieMilo
I normally avoid "loop" puzzle, but this one is easy and made it really enjoyable. tq!

am 18. Dezember 2025, 07:09 Uhr von Piatato
Lovely!

am 18. Dezember 2025, 07:02 Uhr von Richard
Added a few words to the instructions to make it more clear. Thx wuc!

Zuletzt geändert am 18. Dezember 2025, 06:59 Uhr

am 18. Dezember 2025, 06:56 Uhr von wuc
Great snake puzzle. Maybe add a „moves orthogonally through centers of cells“? Nice solve path.

Zuletzt geändert am 18. Dezember 2025, 06:57 Uhr

am 18. Dezember 2025, 06:17 Uhr von Nylimb
I was worried when I saw this, because I've never made much progress on #147. But this was indeed very easy, as advertised. Thanks!
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Reply: I can imagine your worries. :)
To be honest, SVS #147 is the one I am the least proud of. As soon as it turned out that most players needed to guess in that one, I had in mind to make another one of that type, but it simply didn't happen yet. So when I thought about this calendar, Snake was the first one on the list (although the original has a 3-star difficulty rating and most other SVS's that are included in the calendar have 4 or 5* difficulty.)
I don't expect new solves on #147 anymore...

Schwierigkeit:1
Bewertung:91 %
Gelöst:147 mal
Beobachtet:0 mal
ID:000QLG

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