Logic Masters Deutschland e.V.

Foggy entropy

(Eingestellt am 19. August 2025, 14:58 Uhr von ivaylagergova)

Normal Sudoku rules apply: Each row, column, and 3×3 box must contain the digits 1–9 exactly once.

Difference Kropki dots (white): Cells joined by a white dot must have a difference of 1. Not all dots are given.
Ratio Kropki dots (black): Cells joined by a black dot must have a ratio of 2. Not all dots are given.
X clues: An "X" between two cells means they sum to 10. Not all X clues are given.

German whisper lines (green): Adjacent digits along a line must differ by at least 5.

Global entropy: Each 2×2 region of cells must contain at least one digit from each of the three categories:
– Low (1, 2, 3)
– Medium (4, 5, 6)
– High (7, 8, 9)

Fog of war: Parts of the grid are hidden by fog. Cells and clues are revealed as correct digits are placed.

▶ Play online in SudokuPad

Lösungscode: Enter the digits in Row 9 from left to right without spaces.

Zuletzt geändert am 30. August 2025, 10:19 Uhr

Gelöst von tgstar, NicoD, severinus, jalebc, mabjim007, Jeraldo82, forsen, Xerix, Photyne, SKORP17, h5663454, scushuaishuai, atmospherium, Kigor, cmigas, ludvigr04, Jodelbanane, Sralser, kublai, illegel, ... Llamaths, Mr_Tzill, FibonacciCascade, ForzaFcu, Ye Nay Myo Han, Bazylizz, diziet, synth, frank412, Debba, elloschmello, Samiyenas, mezkur7, Mad-Tyas, Jasura, PinkNickels, kangaroo, alexgreyy
Komplette Liste

Kommentare

am 24. September 2025, 09:13 Uhr von ForzaFcu
Amazing puzzle. was challenging till the end

am 30. August 2025, 10:19 Uhr von ivaylagergova
updated

am 23. August 2025, 17:36 Uhr von ivaylagergova
To be honest, this was my first attempt at creating both a fog puzzle and an entropy puzzle. I just had an idea for the opening and decided to give it a try. I’m really glad you enjoyed it.

am 23. August 2025, 05:57 Uhr von NorthCoastAsher
This was my first fog puzzle, and it was very enjoyable! It took me some time due to learning the constraints, but was still an enjoyable puzzle and not annoying.

am 20. August 2025, 11:38 Uhr von BaumiB
First time doing this kind of sudoku. Took me over 45 min but managed to solve it! Was lovely! Thanks so much

am 20. August 2025, 05:14 Uhr von Nitrobit
I really liked the ending

am 19. August 2025, 21:22 Uhr von ivaylagergova
Thank you for your feedback!
All of the puzzles I create are originally designed for my students as part of my extra math lessons at school, where we explore a wide variety of logical challenges.
In this sudoku, I’ve included seven additional constraints to make it more approachable and engaging.

am 19. August 2025, 20:44 Uhr von sujoyku
Thank you for the fun puzzle, ivaylagergova!

Schwierigkeit:2
Bewertung:92 %
Gelöst:209 mal
Beobachtet:1 mal
ID:000OS0

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