Irrwisch Sudoku: X-Sums
(Published on 1. June 2023, 01:41 by Gliperal)
Normal sudoku rules apply.
Clues outside the grid are x-sums clues, which represent the sum of the first X digits (where X is the digit in the first cell) in that direction.
All clues are encrypted: Every digit within a clue has been replaced with either a ? or a letter. The letters A, B, and C are each an irrwisch, which represent a different digit every time they appear. Two-digit clues may not start with a 0, but one-digit clues may.
Example:
Solution code: Row 5, Column 5
Comments
on 1. August 2023, 00:47 by shteev
How can a one-digit clue start with a 0?!
on 18. July 2023, 00:47 by samuel1997
This puzzle is amazing! I hope this could be featured on CTC!
on 21. June 2023, 01:29 by Silverstep
Much more approachable than the sandwich one. This should be on CtC at some point.
on 5. June 2023, 20:41 by madhupt
A great puzzle by Gliperal. Looked very difficult at first but after the quick initial breakthrough, I had to backtrack several times as kept on forgetting the various used up values. In the latter half, sorting C9 and C3 took some effort but fell through very beautifully when I kept on the logical solve path making small deductions. Thanks a lot for sharing.
on 2. June 2023, 21:22 by KNT
really impressive construction
on 2. June 2023, 18:51 by Elliptical
Sublime! I think that's a good candidate for a CTC video.
on 1. June 2023, 21:04 by Bankey
Beautiful puzzle. But requires constant and careful focus and the ability to memorise what can go where, particularly due to lack of any pencilmarking provision outside the grid. On the whole, an enjoyable ride. Thanks, @ Gliperal:)
on 1. June 2023, 20:58 by henrypijames
One digit clue may start with (and therefore be) 0? Since when is 0 a valid x-sum?
@henrypijames Whoops, that's a holdover from the sandwich puzzle rules.
on 1. June 2023, 16:26 by Snookerfan
Brilliant puzzle! Thank you
on 1. June 2023, 10:56 by Niverio
Absolutely fascinating that you can come up with these very unique ideas :) Lovely!
on 1. June 2023, 10:18 by Playmaker6174
Very lovely puzzle! Though getting trickier towards later half, the solve remained interesting and entertaining to the end :)
on 1. June 2023, 03:09 by Myxo
Awesome puzzle!
on 1. June 2023, 01:45 by cornish-john
Very enjoyable solve, thanks!
