Watchtower sudoku
(Published on 1. August 2022, 10:24 by Lizzy01)
This puzzle was inspired by Richard's watchtower sudoku and of course by the various watchtower sudokus by Angelo (the inventor of the constraint), like this one.
My goal with this puzzle was, as you can probably tell, to create a sudoku with only watchtower clues, and no other clues or givens. As a result, it contains a few very tricky steps. Feel free to ask for a hint in the hidden comments.
Rules:
Normal sudoku rules apply.
Each circle represents a watchtower of height X, where X is the digit placed in that circle. Each watchtower must see exactly X cells (including itself) in its row and column combined. Watchtowers cannot see digits larger than their own height, nor past them. (e.g. A watchtower of height 5 would see a 3 behind a 4, but not behind a 6).
Not all watchtowers are given, but cells with squares must not be watchtowers and they must therefore see more or less than X cells.
Try it here.
Solution code: column 7, row 8
Comments
on 22. October 2024, 05:13 by h5663454
CTC link: https://sudokupad.app/p1fk5j6f04
on 9. December 2022, 21:16 by Selenotropism
Finally got it, amazing puzzle!!!
--Thank you!
on 13. August 2022, 02:08 by KNT
Brutal.
--Thanks for solving!
on 11. August 2022, 08:18 by Playmaker6174
Very beautiful and gorgeous first half, then an absolutely tricky later half with such tight logic in certain points, almost pulled my hair out before the big breakthrough in that part :o
--Thanks for sticking with it!
on 11. August 2022, 00:59 by tesseralis
Difficult but beautiful puzzle with some some absolutely elegant deductions!
--Thank you!
on 3. August 2022, 08:15 by Richard
That was a long journey!
You have investigated the type very thoroughly to come with this clever construction. Well done!
--Thank you!
on 2. August 2022, 17:51 by JayForty
Great puzzle! Hard, but with steady progress and very interesting deductions. Thank you!
--Thanks!
on 2. August 2022, 08:32 by Angelo
Wow, what a puzzle! Thank you very much. It definitely was hard, but the deductions were so satisfying and mostly very elegant!
--Thank you!
on 1. August 2022, 20:01 by PrimeWeasel
Pretty hard, but pretty great.
--Thank you!
