Logic Masters Deutschland e.V.

Would you solve this for a prize?

(Eingestellt am 14. Dezember 2025, 08:29 Uhr von FireTruckFuel)

For Christmas this year, I have prepared a Sudoku for my family. There will be a friendly competition and a prize to be won on Christmas day. My family are not familiar with Variant Sudoku so this puzzle is very simple and the rules are simply phrased as well. You may, if you wish, share this puzzle with those in your life who haven't started solving. Merry Christmas and Happy Holidays to all and I will undoubtedly see you again in the new year!

Play the 4X4 Warm-up on Sudokupad

Play the competition version

Place the digits 1-6 in the grid so they each appear exactly once in every row, column and box. A digit in a circle must appear in one of the four cells the circle touches.

Colored lines: Digits must alternate between odd and even as you move along a RED line from one end to the other. Digits on a PINK line must form a consecutive series but can appear in any order.

Please leave a comment if you intend to share this puzzle and Thank you.

Lösungscode: Row 2

Zuletzt geändert am 14. Dezember 2025, 08:31 Uhr

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Kommentare

am 15. Dezember 2025, 00:51 Uhr von supersim2000
What a wonderful idea to create puzzle for your family Christmas celebration.

I tend to overthink whenever I plan a family activity, so I thought you may be interested in hearing my experience before the actual competition:

If everyone in your family is used to using a phone or tablet, I'd probably recommend using the software instead of pen and paper.
I have a bit more experience with variant sudoku than your family (only 1 and 2 stars, though), and I tried solving the puzzle with all checkers turned off to kind of simulate having a printed version. I did this after having solved the puzzle with conflict and solution check on. I found it so much more difficult without the reassurance of the solution checker, and it took me twice as long, even though I already solved the same puzzle once before.

If you do provide a printed version, maybe you could also print a red and pink line and write "odd/even" and "consecutive, but in any order" next to them, just to help your family remember. I know I struggled to understand renban lines the first times I encountered them, so your family might also appreciate actual examples of valid pink lines, such as "1-2-3-4", "2-1-4-3".

Merry Christmas to you and your family. I'm sure they'll enjoy the competition and appreciate you creating a puzzle for the occasion.

am 15. Dezember 2025, 00:26 Uhr von ZiiNerD
A nice solve that took me 5 min. My family is not so keen to puzzling, so I don't think me making them solve this for a prize would end with me giving one away lol, but I really do enjoy this puzzle!

am 14. Dezember 2025, 15:17 Uhr von philolologue
2 min 44 seconds for me! Fun little bite I'm sure your family will enjoy!

Zuletzt geändert am 14. Dezember 2025, 09:37 Uhr

am 14. Dezember 2025, 08:54 Uhr von faltenin
That was nice and simple but then I'm familiar with variants. Would you be sharing a printed version on the day or sending out the link?
---Since my family is unfamiliar with the software, I am planning to print both versions on a single sheet of paper (front and back) along with the rules and handing everyone a copy. We will solve the warm-up together than flip them over at the same time. I suppose learning the software first by doing the warm-up that way would be an option too but I think I will save the software for after.

Schwierigkeit:1
Bewertung:91 %
Gelöst:254 mal
Beobachtet:0 mal
ID:000QJZ

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