Logic Masters Deutschland e.V.

Hidden Sandwiches (Fog, Sandwich Layers)

(Eingestellt am 22. April 2025, 17:00 Uhr von Crusader175)

This puzzle was created for Secret Santa 2024. The recipient is Mark Goodliffe, and he also made solve video of the puzzle. I came up with new sandwich variation, which I’m calling it Sandwich Layers. Enjoy!
Rules:

Normal sudoku rules apply.

Fog: The grid is partially covered in fog. Entering correct digits will clear the fog from surrounding cells.

Sandwich Layers: The number in the top left corner of a cage indicates the sum of the digits sandwiched between 1 and 9 in that row (red cage) or in that column (blue cage), where a "?" can represent any sum ranging from 0 to 35. The digit in a cage indicates how many digits (including the crust of 1 and 9) the corresponding sandwich sum contains.
Puzzle Link: SudokuPad

My youtube channel on solving sudoku: Crusader Puzzle

Lösungscode: Column 2

Zuletzt geändert am 23. April 2025, 12:05 Uhr

Gelöst von Piatato, henter, jalebc, SKORP17, Piff, ananth, Reenolex, Elliott810, ppdswiss, 9Rookienumbers, fjam, kublai, StefanSch, giladooshlon, Uhu, sujoyku, Laje6, lsmooth, biorycbyd, Alce, JSmoove1099, ... Donatello_86 , Lissa41585, bleppie, agvard, Andrewsarchus, illegel, karlmortenlunna, Malakree, trazere, asver, rednax37, kangaroo, Kenji769, MorsBe, RadchenkoAleksandr, MSDOS, PippoForte, Raistlen
Komplette Liste

Kommentare

Zuletzt geändert am 19. September 2025, 15:10 Uhr

am 19. September 2025, 06:20 Uhr von bleppie
Nice flow, even difficulty throughout, thanks!

Reply: Thanks bleppie!

Zuletzt geändert am 5. September 2025, 05:49 Uhr

am 30. August 2025, 12:30 Uhr von Danno
Great puzzle!

Reply: Thank you for solving Danno!

Zuletzt geändert am 8. Mai 2025, 03:26 Uhr

am 7. Mai 2025, 23:03 Uhr von ostio456
I always love when some mental maths plays a large part in a sudoku so i was intrigued by this puzzle straight away. I struggled at first with the constraint as I hadn't come across it before, however I soon got to grips with it. The logic was beautiful throughout, and a bit of light colouring near the end saw me get past a tricky section and the end was in sight! One of my favourite puzzles I've done, thanks!

Reply: Thank you so much for the solve and kind comment! I made the constraint and this is the first puzzle with this rules (that I'm aware of). I definitely liked to explore it more in the future. :)

Zuletzt geändert am 25. April 2025, 12:27 Uhr

am 24. April 2025, 13:13 Uhr von fishsaltyak
@jinkela114514 I went back, this is where I got stuck https://imgur.com/a/8DbPHRs let me know what I missed or if I ended up on a different solve path.

Reply: I replied it in the hidden comment.

Zuletzt geändert am 25. April 2025, 12:53 Uhr

am 23. April 2025, 12:44 Uhr von Exigus
Had to do a bit of arithmetic scribbling on the side. Very nice placement of clues and fog-work.

Reply: Thank you very much Exigus!

am 23. April 2025, 12:05 Uhr von Crusader175
Clarify the rules.

Zuletzt geändert am 23. April 2025, 12:04 Uhr

am 23. April 2025, 04:19 Uhr von rameshsrivats
Beautiful puzzle

Reply: Thank you rameshsrivats! Glad you liked it. :)

Zuletzt geändert am 24. April 2025, 13:12 Uhr

am 23. April 2025, 03:58 Uhr von fishsaltyak
Very nice! One thing to note is that I had to assume that a ? cage can not be a zero value. I did run into a situation where the ? cage cell could have been filled in with a 2 or 4. The 2 would have made the cage value 0 (1 and 9 would be touching). Assuming it was not zero allowed me to finish.

Reply: ? can be 0, and jinkela made a hidden comment on the intended solve-path. I'll clarify the rules. Thank you for solving!

I went back, this is where I got stuck https://imgur.com/a/8DbPHRs let me know what I missed or if I ended up on a different solve path.

Zuletzt geändert am 23. April 2025, 12:01 Uhr

am 22. April 2025, 18:18 Uhr von ppdswiss
Wow - what a great puzzle! I think this one makes it a lot easier than some constraint puzzles to deduce where a certain digit must (or must not) be able to go thanks to the Red/Blue cage constraint. As a result this one flies by and flows beautifully.

Reply: I tried to make it not to difficult for this one, but definitely want to explored the idea more. Thank you!

Zuletzt geändert am 23. April 2025, 11:59 Uhr

am 22. April 2025, 18:12 Uhr von Elliott810
Beautiful puzzle! Thank you:)

Reply: Thank you for the solve and kind comment Elliott!

Zuletzt geändert am 23. April 2025, 11:58 Uhr

am 22. April 2025, 17:31 Uhr von Piatato
Great fun!

Reply: Thank you Piatato for helping test this puzzle!

Schwierigkeit:2
Bewertung:96 %
Gelöst:134 mal
Beobachtet:13 mal
ID:000N0Y

Variantenkombination Online-Solving-Tool

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Lösungscode:

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