Logic Masters Deutschland e.V.

High Digits in the Fog

(Published on 2. July 2024, 21:03 by Belamis)

Sudoku: Normal Sudoku rules apply.

Kropki: Digits in cells separated by a white dot are consecutive. Digits in cells separated by a black dot have a 1:2 ratio.

High Digit lines: Along Red High Digit lines, 1 of the digits is equal to the sum of the rest of the digits on the line.

Fog of War: The grid is partially covered in fog. Correctly placing digits will clear the fog around that cell. No guessing is required.

SudokuPad link

Solution code: Column 9

Last changed on on 3. July 2024, 21:05

Solved by fuxia, PinkNickels, pythonssssss, GorgeousNicko, pepe74287, GrumpyMan, NotThatKindOfDoctor, SKORP17, Uhu, RickiFerrara, fractalminding, henryg, Postnormal, hildende, Elliott810, jchan18, coeurblacky, ... toboed, zuzanina, kapostolou, antzervos, koiking, croo377, naftbefehl, PippoForte, abadx, achambers2010, DutchMark, Blackophelia, bilms, AnebodaSlatorp, ukjohnd, markmcb, BEHamren, Crabbsy Malone
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Comments

on 14. January 2025, 22:12 by DutchMark
Great puzzle, thank you

on 10. August 2024, 14:27 by permafrostyx
yay

Last changed on 5. July 2024, 11:54

on 5. July 2024, 11:49 by Tezza777
Lovely puzzle, thanks! Did you create this "high digit lines" constraint yourself?

Reply
Thanks for the kind words - I did come up with the high digit lines myself, although I wouldn't be at all surprised if someone had created the same constraint previously :)

on 5. July 2024, 02:07 by ostio456
Tried this puzzle before it was fixed and loved the idea. I purposely left the puzzle for today and once i saw that it was fixed i eagerly retried the puzzle and I'm happy i did! great fun

on 3. July 2024, 21:49 by sujoyku
I came back to solve it once more with the disambiguating Kropki. This is a fantastic puzzle. Nicely thematic and very approachable at the same time. Thank you very much for setting and sharing, Belamis!

on 3. July 2024, 21:05 by Belamis
Sorry team, it looks like a kropki dot between r6c3 and r7c3 disappeared on me when I republished this.
This puzzle is NOW be fixed.

on 3. July 2024, 21:03 by lordovol
I have the same issue as Kversten, line in boxes 7 and 8 can sum to 9 or 5

on 3. July 2024, 16:34 by sujoyku
Hey Belamis, I am trying to solve your puzzle at the moment. I really like the concept and the logic of the first phase. Now I am running into the same problem that has been discussed. Is there any argument that fixes the line connecting Boxes 7 and 8? I seem to have two viable options.

on 3. July 2024, 16:02 by x3y2z1
What is stopping R8C3 from being 7 and the high digit? Because if you rule that out then the Kropki disambiguates the rest

on 3. July 2024, 15:06 by 1121
Nice sudoku with not too difficult solving. Time 21:29

on 3. July 2024, 13:05 by jo1912
Still struggling to disambiguate:

C3R4 / C4R4

C3R8 / C4R8

C3R9 / C4R9

Might need some help here lol

on 3. July 2024, 07:42 by Belamis
Added dot to disambiguate line between box 7 and 8

Last changed on 3. July 2024, 07:46

on 2. July 2024, 23:17 by fractalminding
I have same problem.. in row 8.
But start of solving was fun and interesting.

Edit:
I picked up one digit with the help of fog. Overall, this Sudoku is cool! I hope you will correct him a little.

Reply: Thanks for the kind words. I had noticed the 5/9 options in my testing, and thought I had resolved this but looks like I hadn't. I will look to find a good solution to this tonight and post a fixed version.
A fixed version has now been published.

Last changed on 2. July 2024, 22:35

on 2. July 2024, 21:54 by Kversten
I'm also stuck at the same line as Alce in comment above

Edit: If I may ask for a hint - so if digits may repeat on a red line, how should I know if the line in the box 7/8 sums to "5" in box 7 or "9" in box 8? (sorry if I'm missing something obvious)

Last changed on 2. July 2024, 22:06

on 2. July 2024, 21:46 by Alce
Hey @Belamis, can digits repeat on the red line? If so, I get stuck in the box 7-8 line.

Reply:
Sorry for the ambiguity - Yep, digits may repeat on a red line.

Difficulty:1
Rating:86 %
Solved:201 times
Observed:7 times
ID:000IR8

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Solution code:

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