Choose and apply any ONE of the following rules:
Non-consecutive: Orthogonally adjacent cells may not contain consecutive digits.
Anti-King: Cells separated by a chess king's move may not contain the same digit.
Anti-Knight: Cells separated by a chess knight's move may not contain the same digit.
Disjoint Sets: Cells in the same relative position in their boxes may not contain the same digit.
f-puzzles: https://f-puzzles.com/?id=2f99wzfw
CTC: https://tinyurl.com/2p95t2u9 (Note that answer check will likely not work correctly due to the rules parser trying to apply both anti-king and anti-knight.)
Solution code: In the order the constraints are listed above the 4 digits appearing in r1c1, then those appearing in r3c8, those in r6c6, and those in r8c9. (16 digits)
on 8. April 2024, 12:14 by chain.reader
If conflict checker annoyed you, you can use this grid without any rulesets imposed here: https://app.crackingthecryptic.com/fpuzN4IgzglgXgpiBcBOANCA5gJwgEwQbT2AF9ljSSzKKQA3AQwBsBXOeARlTQhpgDsEALhhYVRAXWSFq9ZqwBsnbn0HCYo0rUYsEAFkU9%2B8ISPKnQM7Un3Kjq9cQlSNF1h3RLDxtWfu%2FnW1gBma087Ryp%2FWQQAdhCVEwjzAIQFdwN470SicL8kqPgAVjjbBOlkqzSbL1zsySzIyzcudJLM%2B018gA5i6rMOy1TmqrC6svyUStDSnxmqcP7WbsmMsctg5dbchYQJoam2htZYjd65uu34PRO7PpcEJo8V2%2FL1vaf6hzEiIA%3D%3D%3D
on 12. July 2023, 16:37 by sorendipitous
I've solved the puzzle, but I don't understand the solution code. Could I get some help?
-You need all four solution grids. Find the digits in row 1 column 1 of each of the solutions and enter them in the order non-consecutive, anti-king, anti-knight, disjoint sets. Then do the same for row 3 column 8, and so on. -SSG
on 14. February 2023, 19:50 by ManuH
DANKE!!!
on 14. February 2023, 16:08 by Phistomefel
Hi ManuH! Ich denke, das bedeutet, dass dieses Sudoku einmal mit jeder der vier Bedingungen gelöst werden muss, und anschließend besteht der Lösungscode aus der Zahl in Reihe 1, Spalte 1 mit der Nonconsecutive-Bedingung, dann R1S1 Anti-King, R1S1 Anti-Knight, R1S1 Disjoint Sets, und danach geht's im gleichen Schema mit Reihe 3, Spalte 8 und Reihe 6, Spalte 6 weiter.
on 14. February 2023, 16:00 by ManuH
Hmm. I think I don´t understand the solution code. Constraints listed above>???
-Phistomefel's explanation of the solution code is correct. -SSG
on 12. February 2023, 13:41 by timyoth
just amazing stuff. Creating such puzzle that can be solved with 4 different constraints is no small feat and you can be very proud of yourself.
on 12. February 2023, 13:24 by Playmaker6174
One of the most fascinating and miraculous puzzles I've seen :O
To manage to get *four* different global constraints work uniquely on *one* grid is such an impressive feat, but I could imagine the amount of painful researches for this one x)