Logic Masters Deutschland e.V.

The Logic behind the fog

(Published on 1. October 2025, 17:50 by Duarte-Carvalho)

Normal sudoku rules apply. Dinamic fog: entering a correct digit may clear some fog anywhere on the grid. German whispers: adjacent digits on a green line must differ by at least 5. Even: grey squares must contain an even digit. Odd: grey circles must contain an odd digit. Kropki: digits separated by a white dot are consecutive; digits separated by a black dot are in an 1:2 ratio (i.e. one digit is double the other). XV: digits separated by an X must sum to 10; digits separated by a V must sum to 5. Thermometer: digits on a thermometer must strictly increase from the bulb to the tip. Arrows: the digits along the arrow must sum to the number in the circled cells. Renban: purple lines must contain a set of consecutive digits in any order.

Solve online here: SudokuPad Puzzle

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Solution code: Row 2

Last changed on on 9. October 2025, 17:01

Solved by Sarhik, Xerix, miranda_9, Kioko, SKORP17, ole-1995a, jalebc, jhsa, Myfyr MJ, wuc, CanadianLeviathan, MattJones, nunc, PinkNickels, maniacaljackal, AKernel, ad1643, kroutu, Iluvsodah, MartinR, Imorus, ... NineK, abadx, StfC, DarrenBurnett, Crul, TaeChi, Galc127, Sanger54, gen.j.clock, tdeo, adam001, 379475229, jahnicec, Brandonreider13, hsimah, Frutlop, rictech, spudato321, yves.staub, gadgetgreen
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Comments

on 9. October 2025, 17:01 by Duarte-Carvalho
adding tags

on 6. October 2025, 00:08 by Duarte-Carvalho
Adding link to other puzzles.

on 3. October 2025, 23:54 by dzamie
This is basically a 1* puzzle but with a brute-force box 3. Kinda annooying, but otherwise decent.

on 3. October 2025, 14:37 by jinkela114514
Box 2 is very difficult to solve without using brute force.

on 2. October 2025, 18:38 by ColleDK
box 2 was kinda rough for 2*

on 2. October 2025, 18:08 by Martina
I agree, the difficulty of box 2 does not match the rest of the puzzle.

on 2. October 2025, 14:16 by MacZidane
The interaction between boxes 2 & 8 was terrific.

on 2. October 2025, 11:06 by Exigus
Tricky midgame, very enjoyable puzzle. Thanks!

on 1. October 2025, 20:02 by wuc
1* at start. With box 2 a 3* barricade. Then 1* till end. Maybe frustrating for those newbies enjoying the start. Great fun thx.

on 1. October 2025, 20:02 by CanadianLeviathan
Fun! Closer to 1.5/2 stars imo.

on 1. October 2025, 19:52 by Myfyr MJ
Wow - very nice but tough at times. Thank you.

Difficulty:2
Rating:84 %
Solved:136 times
Observed:1 times
ID:000PGA

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