River Sudoku
(Published on 1. September 2021, 18:54 by Xailran)
A river is a snake path of orthogonally connected cells starting next to a cage; the digit in that cage sets the length of the river. The number in the top-left corner of a cage sets the sum of the digits along the river. Rivers must decline in digit value from one direction to the other, starting from the cage. Rivers must not include cages. Rivers may touch themselves orthogonally, and rivers may overlap.
Summary: Rivers act as 'reverse thermometer arrows', with the controlling cage setting the length and total. Including the controlling cage, cages must not be in any river
Rules Example
Solve Video
Thanks to the generosity of BremSter, this puzzle also has an accompanying solve video. If you have difficulty with the unique ruleset, he does a great job explaining them. The video is in English. Solve video
Cracking the Cryptic have now also published a solve of this puzzle! You can find it here
I hope you enjoy the puzzle and I am eager to hear how you go!
Solution code: Column 3, column 5
Comments
on 7. September 2024, 00:26 by notniko
You don't have to sweat or cry a river while solving :>
on 27. December 2021, 16:05 by Xailran
Added "New" tag per suggestion
on 25. December 2021, 16:07 by Vebby
Really nice idea and smooth to solve! I haven't seen this variant before, maybe it warrants the 'NEU' label?
on 22. November 2021, 18:10 by jez9999
Enjoyed this one a lot, good introduction to river sudoku and you get to colour a lot!
on 14. October 2021, 02:18 by Xailran
Added a link to the CtC solve of this puzzle
on 10. September 2021, 03:15 by Aswen
Wonderful idea for a puzzle. I enjoyed it very much.
on 3. September 2021, 15:44 by juhish
Really nice and relaxing! This flows nicely - like a river :)
on 2. September 2021, 07:20 by Xailran
Added solve video from BremSter
