Japanese Sums Cave Cipher - KNT
(Published on 27. August 2024, 12:49 by ONeill)
Shade some cells such that all unshaded cells are orthogonally connected and the shaded cells are orthogonally connected to the edge of the grid.
Place digits 1-9 into the unshaded cells such that no digit repeats in a row or column. Clues outside the grid give the sums of connected digits between shaded cells, in the correct order. A ? stands for any digit 0-9, but no clue may have a leading 0.
Each letter (K,N,T) must be assigned three different digits 0-9. Different letters may not be assigned the same digit. Each occurrence of a letter can be any one of the three values assigned to it. This means that one of the digits will not be assigned to a letter.
A cell containing a circle is unshaded and its value is the total number of unshaded cells seen vertically and horizontally including itself. Shaded cells obstruct the view. All circles are given.
The puzzle:
SudokuPad
Solution code: Column 3, ignoring empty cells
Comments
on 11. September 2024, 17:04 by peacherwu2
Even after figuring out the geometry, it still refuses to give up!
on 7. September 2024, 00:02 by Agent
Excellent puzzle! I found it very tricky especially towards the end, but always fair.
on 4. September 2024, 05:10 by MaizeGator
Fantastic puzzle! Really neat and minimal setting. I'm lost for words at how you stay organized while setting something like this
on 1. September 2024, 12:28 by AnnaTh
Wonderful puzzle! The break-in was tough, but after that it was a smooth solve. Thank you!
on 30. August 2024, 21:01 by ascension
Great puzzle! While it was difficult at times (especially when I repeatedly forgot the negative constraint), I eventually found the solution path in an enjoyable way.
on 30. August 2024, 01:44 by kamkam
This puzzle should be 6 stars at least. The first part seemed so hard, I got lost but the sudoku part was even harder. It took me 6 hours to finish this... This is astonishing. Loved the way this puzzle itched my brain !
on 28. August 2024, 22:15 by Christounet
Great stuff, man ! Enjoyed this a lot. Wonderful tribute puzzle ! Thanks :)
on 28. August 2024, 21:17 by Jesper
Great puzzle, thanks!
on 28. August 2024, 03:49 by RJBlarmo
Very nice puzzle, there were some neat negative constraint deductions!
on 27. August 2024, 16:24 by Niverio
Absolutely incredible puzzle! Very tight, very arithmetic, very rewarding.
