The Bat's Friend
(Published on 14. October 2025, 03:00 by Colellama)
- Normal Sudoku rules apply, and all clues are standard.
- Dynamic Fog: The grid is covered in fog. Placing a correct digit will clear the fog from that cell and potentially from other cells somewhere in the grid. No guessing is required to progress.
- Killer Cages: The sum of the digits inside each cage is equal to the small number in the top left corner.
- Even Square: Digits in cells with a filled grey square must be even.
- Odd Circle: Digits in cells with a filled grey circle must be odd.
- Light Orange (Entropic) Lines: Every set of three consecutive numbers must include a "low" (1-3), a "medium" (4-6), and a "high" (7-9) number.
- Quadruple Circles: Digits inside a white circle must appear in at least one of the four cells surrounding that circle.
- Kropki dots: Cells separated by a black dot must have a 1:2 ratio.
- Pink (Renban) Lines: Contain a non-repeating set of consecutive digits in any order.
Solution code: Row 9: The first 6 digits read from left to right
Comments
on 22. October 2025, 08:05 by JVA
Too spoopy
on 16. October 2025, 10:17 by VitP
do people realize that sven's program has a text copy/paste feature ?
(useful for solution codes)
YAY SVEN
on 16. October 2025, 02:20 by fishsaltyak
Thumbs up for great puzzle.
Double thumbs up for short solution code.
on 15. October 2025, 23:19 by SanFranSam
thanks for requiring only 6 digits so much easier to memorize than 9. and works just as well.
on 15. October 2025, 11:39 by SudokuFan
Anti-thanks for the short solution code, instinctively copied all 9 digits
**Edit: Colellama- Sorry lol! I solve these on mobile where I can’t copy and I saw a couple others where it was only the first 6 for the solution. Which is all I can remember at a time lol. So I thought it would be easier for everyone. I hope you enjoyed besides that!
on 14. October 2025, 18:35 by superkinkel
Very nice one, if I hadn't mistaken the orange line for a modular line I also wouldn't have wasted 30 minutes figuring out that I didn't carefully read ...
on 14. October 2025, 17:38 by hardline35
Very enjoyable puzzle, thank you!
**Edit: Colellama- Thank you!
on 14. October 2025, 13:14 by googuee
Nice puzzle @Colellama! I enjoyed it. Not sure if it is me, but I managed to solve it without the need for the Renban line.
**Edit: Colellama- Thank you! My original version was much harder but not as fun in my opinion, where it was needed. But I kept it at the end because I thought it looked nice overall lol
on 14. October 2025, 12:24 by Ol-Jay
That was so nice, I enyjoyed it very much! :)
**Edit: Colellama- Thank you!
on 14. October 2025, 09:49 by ZigZagWonderer
Lovely puzzle, thank you!
**Edit: Colellama- Thank you!
on 14. October 2025, 08:36 by Dermerlin
Thanks for using only a 6 digit solution code...
