Kropki Nurimisaki
(Published on 1. February 2023, 08:00 by tallcat)
Normal Sudoku rules apply
Nurimisaki:
Shade some cells according to the following rules:
1. All unshaded cells form a single orthogonally connected area.
2. No 2 x 2 region may be entirely shaded/unshaded.
3. Circles in the grid must be located at “dead ends” i.e. surrounded by shaded cells or grid edges on 3 sides. All circles are given.
4. Circled digits indicate the number of unshaded cells seen in a straight line from the dead end, including the cell itself.
5. Digits cannot repeat in shaded regions.
Kropki: Cells separated by a black dot have a ratio of 1:2. Cells separated by a white dot are consecutive. Not all dots are given. Additionally, one of each cell joined by a dot is shaded and unshaded, and all black dots that cross shaded/unshaded boundaries are given
Example Puzzle
You can play the example puzzle at f-puzzles or CTC
Main puzzle
Can be solved online at f-puzzles or CTC
Solution code: Row 8 (left to right) followed by column 2 (top to bottom). 18 digits, no spaces.
Comments
on 2. August 2023, 18:48 by Christounet
Enjoyed that shading part very much ! Thanks :)
on 28. March 2023, 22:26 by Bankey
Tough and tricky, but thoroughly enjoyable. Thanks, @ tallcat :)
on 21. February 2023, 16:55 by Playmaker6174
Wonderful and fantastic puzzle! If only I got the part about negative constraints on circle much sooner... but that didn't stop me from fully enjoying this one from start to finish ;)
on 3. February 2023, 02:54 by Elliptical
Brilliant.
on 2. February 2023, 16:34 by AryaSV
This is my first ever puzzle involving any form of shading the cells. Fell in love with this. Going to explore "shading" based sudoku puzzles more now!
on 2. February 2023, 06:25 by PulverizingPancake
Lovely! Any headaches induced during my solve were due to my not reading the rules fully and not the puzzle lol
on 2. February 2023, 03:11 by Myxo
Amazing puzzle, loved it!
on 2. February 2023, 01:12 by twototenth
Absolutely lovely. Outstanding setting.
on 2. February 2023, 00:51 by Blobz
Hard work, but I got there in the end! It helps to apply *all* the rules :)
on 1. February 2023, 20:39 by mathpesto
What a fantastic hybrid! Very fascinating combination of rules :)
on 1. February 2023, 18:22 by Samson
Absolutely gorgeous use of all the restrictions for a very satisfying solve. Thank you!
on 1. February 2023, 15:51 by KNT
Not the biggest fan of nurimisaki, but this was a very enjoyable (and approachable!) hybrid.
on 1. February 2023, 15:10 by abed hawila
Excellent!
on 1. February 2023, 14:15 by Niverio
Gorgeous puzzle!
on 1. February 2023, 11:27 by Elliott810
Brilliant puzzle! Thanks:)
