Otherwise standard Sudoku rules apply.
Solution code: Column 4
on 3. August 2024, 19:46 by Shuhua Milk
Nice!
on 14. August 2023, 10:04 by Snaques
Another new rule set for me and another chance to get blown away by how you setters are able to build such intricate puzzles.
Thank you for a lovely puzzle AtK!
---Thank you for the solve and the generous comment.---ATK
on 13. August 2023, 13:38 by PS3UDONYM
Very fun, but hard for me. Finally finished after a 4th try. I got different solutions every time, obviously wrong ones in hindsight.
I keep messing up with the constraints shade vs. non shaded.
---Glad you liked it and got there in the end.---ATK
on 12. August 2023, 17:09 by nearestneighbour
Awesome, I love this rule, it allows for such a wide variety of deductions. Also when I finished the puzzle the solution code was wrong so I got to do it again :)
---Sorry I missed this by being too busy lazing on a beach.
Thank you very much for the generous and amusing comment.---ATK
on 11. August 2023, 12:34 by Tamuha
Awesome puzzle. I really like how the puzzle places an accent on the center digit of each Box and how they interact with your shading rules. Very pleasant solve. Thank you.
---Thanks for the generous comment and the solve.
In fact this puzzle was initially called "Caramel Centres" in development. But I had this other title hanging around doing nothing so, you know... ---ATK
on 9. August 2023, 11:16 by Franjo
I‘m glad this was no „kiss of death from Mr. …“, but again a lovely puzzle from „the Killer“! Thank you so much for sharing.
---Glad you liked it, thanks for the kind comment.---ATK
on 8. August 2023, 21:51 by LeaVulpina
I always greatly enjoy your puzzles, and this is certainly no exception! Thanks a lot! :D
---Glad you liked it, thanks for the kind comment.---ATK
on 8. August 2023, 16:34 by SirWoezel
Excellent puzzle. Loads of fun.
---I'm glad you like it. Thanks for the solve. ---ATK
on 8. August 2023, 14:10 by ozgaz
Nice one again ATK. Nice logical flow. Stumbled a few times with lazy thinking but really every step is straight forward and an enjoyable solve.
---Thanks as always for the solve and the generous comments.---ATK