Xedni lines
(Published on 12. April 2025, 02:12 by ralphwaldo1)
The opposite of index lines, in which the digit in position d along a line always indexes the position of the digit d. On a Xedni line, that can never happen.
Thanks to gdc for aesthetic suggestions, programming and to ThePedallingPianist for testing.
Ongoing series
Sudoku: Place the digits 1-9 once each into every row, column and box.
Xedni lines: A line of length N contains the digits from 1 to N without repeats. If the nth cell on a line (with the diamond being the 1st cell) contains the digit d, then the dth cell may not contain the digit n.
Solution code: Row 9
Comments
on 12. April 2025, 12:10 by ralphwaldo1
lowered rating due to comments
on 12. April 2025, 11:28 by Snookerfan
Very nice! To make a puzzle with this ruleset easy means that it has been set very well, so congratulations for that. Thank you
on 12. April 2025, 11:04 by giladooshlon
Very nice flow throughout. Soft 3* in my opinion.
on 12. April 2025, 10:59 by Briks
Difficulty only 2 stars...
on 12. April 2025, 09:48 by zeniko
Somehow I found the 6x6 trickier than this 9x9 which flowed quite nicely and wasn‘t all that difficult. Thanks for setting this beautiful remix.
on 12. April 2025, 07:28 by sanabas
Interesting idea for a rule. Once I wrapped head around it, found it quite easy except for one step in the middle. Good fun.
on 12. April 2025, 07:11 by Fisherman
If any YouTube sudoku experts can read this, then stop whatever you are doing and let this puzzle be your next feature.
