The Loneliest Number
(Published on 6. November 2025, 08:06 by Cyprane)
Rules:
Normal Sudoku rules apply.
The grid is covered in dynamic fog. Placing correct digits into the grid will clear the fog. "One" is required to start the puzzle.
Digits inside a Killer Cage add up to the value in the top left corner of the cage.
Digits along an arrow sum to the digit in the attached circle.
Digits joined by a black Kropki Dot have a ratio of 1:2 (one digit is double the other). Not all dots are given.
Digits joined by a white Kropki Dot are consecutive digits. Not all dots are given.
Digits along a thermometer increase in value from the bulb end.
Adjacent digits along a green German Whisper line must have a difference in value of at least 5.
Solve on SudokuPad
All feedback and comments are appreciated. I hope you enjoy this puzzle. Thank you.
Solution code: All the digits in Row 9, left to right.
Comments
on 8. November 2025, 19:45 by Supalea
Very easy and smooth ♥️
on 8. November 2025, 16:13 by zerimski
Great puzzle, thank you. Had a bug on the Android version of the Sudokupad app where the dynamic fog didn't clear correctly, and it just cleared box 5 making for a very tricky start. Worked fine on the web though.
on 6. November 2025, 22:05 by fishsaltyak
Smooth and quick.
on 6. November 2025, 21:34 by Wgrady3
Really fun puzzle. I loved how the flow was so easy to follow. Great puzzle for entry into different rule sets.
on 6. November 2025, 17:54 by superkinkel
This was fairly easy (just above 7 minutes for me), the only thing is that entering 1 in r5c5 is more or less a guess, since we are told 1 is required to start, but it doesn't say, it goes in the open cell. The mere fact that 1 has probably less business anywhere else is just a guess.
on 6. November 2025, 16:22 by SennyK
Easiest break-in in my life! xD Very fun, the fastest solved puzzle in my life, thanks for sharing.
@Playmaker6174 I have solved it without making any assumptions
on 6. November 2025, 12:57 by dickey
Nice
on 6. November 2025, 12:16 by Gediminas
fast and fun!
on 6. November 2025, 10:17 by Playmaker6174
The puzzle is actually broken without that one particular assumption (which I’ve known that it’s a common mistake actually), but with that assumption then the puzzle solves very smoothly.
on 6. November 2025, 08:26 by googuee
Nice and smooth puzzle! Thanks for sharing.
