Countdown to 2026
(Eingestellt am 30. Dezember 2025, 23:59 Uhr von WEBthe3rd)
Normal sudoku rules apply.
Note: All lines have a maximum length of 4 cells.Dynamic fog - The grid is covered in fog. A correctly placed digit will clear any fog in that cell, and potentially in other cells as well. No guessing is required.
Sandwich Sums - Digits outside the grid indicate the sum of the digits found between the 1 and the 9 in the indicated row or column.
Anti-Kropki - Digits separated by a red ❌ are not consecutive and are not in a 1:2 ratio.
German Whisper - Digits along a green line must differ from their neighbors by at least 5.
Parity Lines - Digits along a red line must alternate between even and odd.
Renban Lines - Digits along a pink line must form a consecutive, non-repeating set in any order.
Region Sum Lines - Digits along a blue line are divided into segments with equal sums by the box boundaries.
Lösungscode: Column 9 from top to bottom
Kommentare
am 6. April 2026, 19:59 Uhr von abadx
I had a bittersweet experience with the sudoku flow.
The fact that sandwich sums is only used at the first third of the solve path and the fact that one has always to keep in mind that lines are less than 5 cells long creates a weird solving experience.
Anyway, thanks for setting.
am 13. Februar 2026, 05:31 Uhr von Ratzfaz
Nice puzzle and not to hard. But only, if u don't miss the 4 length rule ;-)
am 24. Januar 2026, 20:58 Uhr von ryv3x
One of the best fog sudokus i've ever done! such great logic behind every step, feels like everything is intended. Imo deserves a 100% rating maybe even more!
am 11. Januar 2026, 22:58 Uhr von MattJones
Deserves a vastly higher rating. Intelligent, smooth and fun.
am 11. Januar 2026, 18:13 Uhr von HereBeNames
If I saw this right, the assumption that a line can make no sharp turn is needed. i.e. a line can not turn 135degree. At too points I thought that a line could still go to a second cell, f 135° turns were allowed and just guessed it wasn't.
am 2. Januar 2026, 23:53 Uhr von oklux
Nice puzzle! Happy new year!
am 2. Januar 2026, 01:16 Uhr von CarnacTheMagnificent
Awesome setting. Thanks for the puzzle.
am 31. Dezember 2025, 18:17 Uhr von Martina
I loved it, thanks for setting!
am 31. Dezember 2025, 15:27 Uhr von MartinR
Nice puzzle, lots of small deductions not difficult but also non trivial (although I did initially miss the rules on line length, but that's my bad)
Agree with SennyK on rating too - I do think fog of war puzzles can suffer from this more due to their nature.
am 31. Dezember 2025, 04:12 Uhr von SennyK
Great puzzle idea and beautiful execution, I do not understand why this is rated so low. Deserves higher rating. Happy New Year!
am 31. Dezember 2025, 02:48 Uhr von War
Hey Russ, this is very solvable. A few tips:
Start with the sandwich sums, then there will be a GW forced digit. Then another GW digit will play with the sandwich in column 3 and you have broken in the puzzle. The thing to remember from here is that every line has a max length of 4, which is necessary to solve the renbans that follow.
am 31. Dezember 2025, 02:15 Uhr von RussKozerski
Is this solvable? I've never struggled so much with a 1-star puzzle.
