123 Quad
(Published on 12. June 2026, 22:27 by addie)
Antiknight and Antiking: Any two cells separated by a knight's or king’s move in chess cannot contain the same digit.
Nonconsecutive: Any two orthogonally adjacent cells cannot contain consecutive digits.
Quadruples: Digits in white circles must be present at least once in the cells the clue touches.
Solution code: Row 2
Comments
on 15. June 2026, 18:04 by Rollo
Sehr knifflig, sehr schön :-).
on 14. June 2026, 11:31 by slowthinker
For me the break-in is even 3*. After that it flows easily.
Even after getting the first digit in the bottom row, eliminating further candidates is really tough. Once the anti-constraints work their magic, it flows easily.
on 14. June 2026, 05:32 by VitP
takes a bit of study to get the first digit. the rest is level 1
on 13. June 2026, 04:45 by EYEONYSUS
I really enjoyed this puzzle! Not so familiar with the anti-constraints so it took me a while, but it was a very delightful time. Thank you :>
on 13. June 2026, 02:12 by addie
fuxia, I didn't know that was something to avoid, thank you for letting me know!
on 12. June 2026, 23:54 by fuxia
Please don't publish many puzzles in a short time span. You are pushing other setters puzzles off the front page. Wait a few days between puzzles, and you are very welcome. :)
