Sudoku Variants Series (460) - Index Lines
(Published on 13. February 2026, 06:00 by Richard)
For this Sudoku Variants Project I have planned to publish a unique Sudoku variant every week.
Coming very soon: Easy Peasy Advent Leftovers
Index Lines
Inspiration for this type comes from marty_sears and juggler.
Solve online in
I will see how long it takes before I am running out of ideas.
Making the Easy Peasy Sudokus wasn't always easy for me, so I have a small pile of 11 leftovers. Some were too hard, others were equally hard, nice or interesting as the one in the Calendar.
But they are all too good to stay unused, so the coming weeks there will be a leftover on wednesday and friday.
SVS will continue on March 27.
Apply classic sudoku rules.
On an index line, the digit in the Nth cell along the line (starting from the diamond) indicates the position along the line where the digit N appears. Eg: 3214 would be a valid line; the 1st digit, 3, indicates that the 3rd digit is a 1, and so on.
Sudokupad (no answer check)
Sudokupad (with answer check)
or
Penpa+.
Solution code: Column 9
Comments
on 13. February 2026, 18:33 by Franjo
Lovely and easy. Again a perfect introduction for this constraint. Thank you very much for creating and sharing.
To the best of my knowledge Marty Sears invented these lines, but was not the first one. There must have been at least one person (GM Alexandria) who did it earlier.
on 13. February 2026, 16:47 by zee_zuper_beeg
Very smooth and enjoyable
on 13. February 2026, 15:40 by GeorgeTheToad2
Wonderful.
on 13. February 2026, 15:29 by ketchup_monster
Super smooth and fun
on 13. February 2026, 13:57 by rojspencer
Enjoyable. Thanks.
on 13. February 2026, 10:44 by damo_89
Very approachable.
on 13. February 2026, 09:36 by marcmees
Thanks for the weekly treat.
on 13. February 2026, 08:43 by Piatato
Smooth!
on 13. February 2026, 06:39 by Nylimb
I've struggled with index lines in the past, but this one was nice and easy! Thanks.
