Logic Masters Deutschland e.V.

Training Day

(Published on 7. December 2025, 00:05 by Cyprane)

Rules:

Normal Sudoku rules apply.

The grid is covered in dynamic fog. Putting a correct digit in the grid will clear that space and possibly other spaces in the fog.

Little Killers - Digits outside of the grid shows the sum of the digits along that diagonal within the grid.

Killer Cages - Digits inside a killer cage add up to the value in the top left corner of the cage. Digits may not repeat in the cage.

White Kropki Dots - Digits connected by a White Kropki Dot are consecutive. Not all dots are given.

Black Kropki Dots - Digits connected by a Black Kropki Dot have a ratio of 1:2. One is double the other. Not all dots are given.

Thermometers - Digits along a thermometer increase in value starting from the bulb.

German Whispers - Adjacent digits along a Green German Whisper line must have a difference of value of at least 5.

Dutch Whispers - Adjacent digits along an Orange Dutch Whisper Line must have a difference of value of at least 4.

Renban Lines - Digits along a Purple Renban Line are a set of consecutive digits in any order.

Arrows - Digits along an arrow sum to the digit in the attached circle.



Solve on SudokuPad

The rules might seem overwhelming at first, but the goal is to provide a fun sampler to see each rule in action. I hope you enjoy this puzzle as much as I enjoyed making it. All comments and feedback are greatly appreciated. Thank you.

Solution code: Column 9, all digits from top to bottom.


Solved by micjo, wags0307, idanz, L00ping007, PinkNickels, tuturitu, sujoyku, puratoku, johnreid, Dean, fuxia, tricksy1224, sparkymanu, TeddieMilo, 9x9, Sarhik, Flash Groudon, themadridi, BorisTheSnake, ... Spooof, peep50183, hejadavid, Counterfeitly, hige, Eraelan_2, jcgodart, koiking, sherrick, Capsai, Nagesh, radium, KillTehBunny, Gizmo, dingledork, drmegadude, ciaragst, kublai, Aronana, ManniMensen
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Comments

on 8. December 2025, 22:38 by dzamie
Neat puzzle. I feel like the kropki dots overstayed their welcome a little, and the last kropki is entirely unnecessary - all 8 other boxes can be fully solved, which means the last one can be solved without clues.
Plus, I think the longer thermo isn't necessary; I just used normal sudoku logic for each cell, rather than doing anything with that rule.

on 8. December 2025, 04:25 by NotSoMagnifique
Great way to stay sharp!

on 7. December 2025, 19:11 by darylkay
Nice puzzle to start the day about 10 kjnutes, the only constructive criticism would be the last kropki was really used. Overall nice one!

on 7. December 2025, 10:44 by BKKGarrett
I had a lot of fun working through this. Thank you!

on 7. December 2025, 08:05 by JVA
Nice puzzle. Some boxes were revealed before the previous ones were fully filled in, which doesn't feel intentional. Also, I think the last kropki is redundant

on 7. December 2025, 03:02 by TomT
Loved it. Thank you

on 7. December 2025, 02:30 by naama
this was very nicely made

on 7. December 2025, 00:29 by faltenin
Nice little snack, thanks!

Difficulty:1
Rating:87 %
Solved:190 times
Observed:0 times
ID:000QCR

Variant combination

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Solution code:

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