Day 9: Chess Sudoku
(Published on 9. December 2025, 06:00 by SharpFox)
Rules:
- Normal 4×4 Sudoku rules apply.
- Cells a chess knight's move apart cannot contain identical digits.
- Digits inside a dotted cage sum to the given total in the top left corner.
Solution code: Row 2 (4 digits):
Comments
on 22. December 2025, 09:58 by Nakedsinglehunter
Hat mir viel Freude gemacht :) Schöner Adventskalender.
on 21. December 2025, 15:44 by tstaffor
00:42 for me. Fastest solve in this advent so far. It did help that I already knew the secret to 4x4 anti-knight.
on 15. December 2025, 07:47 by Kirra
Loving the advent series.
on 14. December 2025, 10:01 by Melle
0:54 for me
on 9. December 2025, 21:07 by dzamie
Wow, I didn't realize how incredibly restrictive anti-knight is on a 4x4. I mean, it makes sense, but that's still impressive.
on 9. December 2025, 18:33 by SharpFox
Updated SudokuPad Link. Thanks to aatusi
on 9. December 2025, 14:41 by PinkNickels
14 sec
on 9. December 2025, 12:30 by aatusi
The sudokupad rules include an unused antiking rule
on 9. December 2025, 07:39 by macintux
41 seconds is, by far, a personal best. All hail snacks.
on 9. December 2025, 07:30 by wuc
Easier than most. Still a great introduction puzzle. Thx.
on 9. December 2025, 07:23 by emwmasu
Nice little breakfast snack, 32s!
