Logic Masters Deutschland e.V.

Chinese coin (double digit thermometer sudoku)

(Eingestellt am 18. Juni 2021, 14:59 Uhr von Aspartagcus)

I set this puzzle as a challenge for myself to see if it was at all possible. I was wondering if one could use a single clue to create a 9x9 sudoku with a unique solution, and decided to try it out with a double digit thermometer. It turned out to be a nice puzzle with interesting logic, so I decided to put it up here.

Edit: This puzzle was featured on Cracking the Cryptic :)

If you like this, check out Garford's double digit thermo puzzles here, here, here and here.

RULES:
- Standard sudoku rules apply.
- The thermometer is a double digit thermometer, that has to be populated by double digit numbers. Each number starts with the tens-digit followed by the units digit seen from the bulb (tens and units digits alternate along the line). The numbers have to strictly increase moving away from the bulb.

Here is a 4x4 example, which can be solved here: Penpa+ link


And this is the puzzle:


Enjoy!

Link to solve it online:
Penpa+ (with answer check)
f-puzzles

Lösungscode: Row 8 and column 7 in succession.

Zuletzt geändert am 18. August 2021, 22:08 Uhr

Gelöst von Isa, cdwg2000, Cane_Puzzles, polar, saskia-daniela, SKORP17, Jesper, DiMono, ___, Julianl, henrypijames, TimE, Krokant, matiasv5, Garford, marcmees, SudokuExplorer, elpadrinoIV, Storm, RJBlarmo, ... Uhu, apwelho, LadyRuatha, zhergan, h5663454, LoverOfPi, Rollo, tuturitu, GexTed, Shlefter, Tom-dz, TroublesomeOrca, MicroStudy, Charly in the Fall, Sqwerty, TryingMyBest, P12345, sandmoppe, pjhiatt
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Kommentare

am 13. November 2022, 22:40 Uhr von Rollo
Nice idea!

am 18. August 2021, 22:08 Uhr von Aspartagcus
Added tags

am 26. Juni 2021, 18:13 Uhr von Klausku
I really like this one. No givens, one clue and an unique solution. Wow. The solution was also quite nice.

am 25. Juni 2021, 09:19 Uhr von Playmaker6174
Very nice and fun puzzle, it's astonishing to see how one line can produce such puzzle like this :)

am 24. Juni 2021, 16:48 Uhr von MattWCompton
Great puzzle! Now to watch Simon's crack at it.

am 24. Juni 2021, 13:55 Uhr von Aspartagcus
Added link to CtC.

Zuletzt geändert am 24. Juni 2021, 11:19 Uhr

am 24. Juni 2021, 02:42 Uhr von Nylimb
This is my favorite type of sudoku puzzle: You take one additional rule and then ask if that rule can give a puzzle with a unique solution, without adding any extra information like given digits or killer cages, etc. Finding a puzzle like that can be hard, and finding one that can be solved smoothly is even harder. Well done!

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Thank you! :)

Zuletzt geändert am 24. Juni 2021, 11:18 Uhr

am 24. Juni 2021, 01:26 Uhr von Ragna
Very tricky and smooth puzzle. One devil was blinking, but I like devils.
;-))

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Not sure what that means, but thanks! :)

Zuletzt geändert am 19. Juni 2021, 11:50 Uhr

am 19. Juni 2021, 10:15 Uhr von kolot
A puzzle with a simple rule set and a pure grid with no givens. Very nice achievement. Great puzzle!

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Thank you! :)

Zuletzt geändert am 19. Juni 2021, 11:51 Uhr

am 19. Juni 2021, 02:50 Uhr von elpadrinoIV
Very nice puzzle! Just avoid making mistakes at the beginning like I did :D.

Thank you Aspartagus for the help!

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No worries, your mistake was an easy one to make. Glad you enjoyed it, still. :)

Zuletzt geändert am 18. Juni 2021, 17:04 Uhr

am 18. Juni 2021, 16:16 Uhr von cdwg2000
Beautiful design! It does look like ancient Chinese coin, thank you!

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Thanks, I'm happy I managed to keep the design I went for in the beginning. :)

Schwierigkeit:3
Bewertung:95 %
Gelöst:91 mal
Beobachtet:6 mal
ID:0006P6

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