Logic Masters Deutschland e.V.

Stubborn Fog

(Published on 12. April 2025, 19:00 by ul-Rhymm)

Normal Sudoku: Place each digit, 1-9, exactly once in each row, column, and 3x3 region.

Stubborn Fog: The grid is covered with fog. Placing a correct digit removes the fog from that cell.

Dutch whispers: Digits connected by an orange line must have a difference of at least 4.

Arrows: Digits on an arrow (thin grey line) sum to the value in the connected circle. (All arrow sums are a single digit number.)

Quadruples: Digits in a quadruple circle must appear in the four adjoining cells. (All quadruples contain four digits, arranged in ascending order from top-left to bottom right.)

Maximum: Yellow shaded maximum cells are greater than each orthogonally adjacent cell.

Sudokupad Link

Solution code: Row 9, left to right.

Last changed on on 13. April 2025, 01:54

Solved by SKORP17, giladooshlon, ludvigr04, Babbelnde Bembel, kakstront, efnenu, Myreque, Targora, zeniko, Kversten, Sralser, davidemsa, Tank, kkli, killje, schnitzl, dogfarts, sanabas, aeusuke, thomamas, ... peznut, koiking, 3ColorTheorem, josemadre, Aeneryss, asver, neroute2, anthe95, kangaroo, StaticTimeHead, Kenji769, Supertaster, abadx, PippoForte, GorgeousNicko, latters176, illegel, Omnicole
Full list

Comments

on 13. April 2025, 17:50 by Myfyr MJ
Nice challenging puzzle.

on 13. April 2025, 17:20 by Myfyr MJ
Nice challenging puzzle.

on 13. April 2025, 17:07 by dingledork
Gorgeous puzzle. Easy without being trivial. Thanks!

on 13. April 2025, 12:36 by nunc
Thanks for this nice puzzle!
I have a suggestion for the naming of the rule, though: Somewhere else it is called "dense fog", which I like much more. Of couse you can do as you like.

on 13. April 2025, 04:26 by larmoejr
Thank you for the puzzle!

on 13. April 2025, 01:54 by ul-Rhymm
Changed challenge rating

on 12. April 2025, 23:34 by Tank
That was fun! I would say 2 stars for difficulty

on 12. April 2025, 23:31 by ul-Rhymm
Changed challenge rating

on 12. April 2025, 23:17 by Sralser
Agree 1-2.

on 12. April 2025, 23:13 by Sralser
Agree 1-2.

Last changed on 12. April 2025, 22:32

on 12. April 2025, 22:32 by kakstront
Break in was not trivial (mainly because I missed the quadruple constraint). Everything after is pretty easy. 1-2 stars for me

on 12. April 2025, 21:38 by ul-Rhymm
Fixed Link

Last changed on 12. April 2025, 22:09

on 12. April 2025, 20:03 by Azure
Bro where is the link?

Sometimes, I am a fool. /ul-rhymm

Last changed on 12. April 2025, 23:30

on 12. April 2025, 19:09 by Killer-Ly
A link to solve it?

Oops! Fixed! /ul-rhymm

Last changed on 12. April 2025, 22:18

on 12. April 2025, 19:07 by larmoejr
I can't seem to find a link to the puzzle.

Thanks for pointing this out! My mistake. . . /ul-rhymm

Difficulty:2
Rating:91 %
Solved:168 times
Observed:11 times
ID:000MVL

Variant combination

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Solution code:

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