Logic Masters Deutschland e.V.

Odd/Even Mystery Sandwich

(Published on 11. September 2020, 21:10 by UnnamedSorcerer)

This is the second Mystery Sandwich Sudoku I created a couple months ago. MartinR created this variant before I later had the same idea. This puzzle is approximately as difficult as my first puzzle so I will give it two stars.

Normal Sudoku rules apply. Grey cells contain even numbers. Clues outside the grid show the sum of the digits between the X and the Y in that row/column, where X and Y are consistent for the whole puzzle.

Here is an f-puzzles link. Please note that the 37 is not really a Little Killer clue, it is the sandwich clue for row 6. If there is a better way to set a sandwich clue greater than 35 in f-puzzles, please let me know in the comments. This was my first time using it. f-puzzles link

Solution code: 3rd and 6th rows

Last changed on on 13. September 2020, 00:21

Solved by karen_birgitta, skywalker, dm_litv, john9, NikolaZ, amirbeirat, Polofar, ThrowngNinja, DamnedLight, Rollo, Genomico, Voyager, NjtehKourian, Joseph nehme, ArisK, rcg, pippilotta, marcmees, ManuH, ... JonnyKaufman, mango, Kompetenzpartner, moss, Imperial Marcher, Symmetrik, Shmartus, bob, Uhu, isabelringo, SKORP17, XoZu, lutzreimer, Thomster, keelyc27, Raistlen, ParaNox, zrbakhtiar, Saskia
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Comments

on 5. October 2021, 08:42 by ParaNox
You can use cosmetic text (Cosmetic Tools -> Text -> Place Mode: Outside) in f-puzzles for your clues. It won't warn you if you make a mistake then but it looks nicer and you don't have to use little killer clues that way. :)

Thanks for the puzzle!

on 13. September 2020, 16:25 by UnnamedSorcerer
Thank you MartinR! You invented an excellent variant. Mystery Sandwich adds a layer of logic without adding complexity.

on 13. September 2020, 16:19 by MartinR
Thanks for the mention:)

(Wasn't strictly necessary as you came up with the same idea independently, but still appreciated)

Always nice to see the same idea used by different setters as each have their own approach.

on 13. September 2020, 00:21 by UnnamedSorcerer
Improved wording.

on 13. September 2020, 00:20 by UnnamedSorcerer
Edited this puzzle's description to give credit to MartinR.

Last changed on 12. September 2020, 23:52

on 12. September 2020, 23:51 by UnnamedSorcerer
Something else I just noticed - Cracking The Cryptic used a rule description that is very similar to the one Richard used in his Mystery Sandwich. I adopted Cracking The Cryptic's wording when I started posting here because I had been using a rather awkward wording that I hadn't managed to improve upon: "Clues outside the grid indicate the sum of the digits sandwiched between the same two crusts in that row or column. Deduce the crusts and solve the puzzle." And my first two puzzles didn't even have "the same" in the rule description. Anyway, that's how we ended up with two such similar-looking versions of the same variant.

on 12. September 2020, 23:38 by UnnamedSorcerer
I edited the description of my first puzzle to give credit to MartinR for coming up with the idea before I did.

on 12. September 2020, 23:31 by UnnamedSorcerer
Thank you dm_litv! I guess MartinR had the idea first.

on 12. September 2020, 22:38 by dm_litv
@UnnamedSorcerer: You can find some of them, using advanced search.
"Search puzzles", "Advanced search", "Search text" mystery sandwich, click "Search" at the bottom of page.

on 12. September 2020, 17:41 by UnnamedSorcerer
Thank you, marcmees! Are there other mystery sandwiches out there? I came up with the idea but I may not have been the first to do so.

Difficulty:2
Rating:81 %
Solved:56 times
Observed:9 times
ID:0004B8

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Solution code:

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