Lucky Charms Sudoku
(Published on 26. July 2020, 08:43 by cam)
This is the first in what may become a series of puzzles with a constraint I call lucky charms. This is based on one of my all time favorite sugary breakfast cereals from the US. This puzzle is rather easy but I hope that doesn't prevent you from enjoying it because I think you'll find that it has some really neat logic. If you like this variant, please let me know.
Ordinary sudoku rules apply. In addition, some cells are lucky charms. Each lucky charm symbol represents a different number. The digits near the lucky charm (adjacent and diagonally adjacent) that are within 1 of the lucky charm's number are called close neighbors. For example, if the lucky charm is 4, any neighboring digits that are 3, 4, or 5 are close neighbors. See the example below where these are highlighted. A lucky charm has exactly as many close neighbors as it's number. In the below example, there are two 3's, a 4, and a 5 for a total of 4 close neighbors.
All lucky charms are given (so negative constraints may be necessary).
Here is the puzzle. Enjoy! :)
Solution code: Row 2 followed by column 4
Comments
on 14. July 2021, 21:14 by marcmees
nice.
on 14. July 2021, 02:51 by cdwg2000
Very nice!
on 25. September 2020, 01:33 by cam
Removed puzzle link
on 3. September 2020, 06:54 by Voyager
I had a lot of fun solving this!
@Voyager Thank you for giving it a go! This is perhaps my favorite puzzle I've set!
on 24. August 2020, 20:57 by cam
Thank you everyone for the nice comments :)
on 4. August 2020, 00:53 by MartinR
Nice idea, I'm a fan of puzzles with negative constraints, as gives another line of thought.
on 1. August 2020, 20:53 by Genomico
Nice one. Nice logic path.
on 26. July 2020, 08:49 by cam
Added an f-puzzles link :)
