The Puzzle With 3 Stripes
(Published on 8. March 2025, 15:14 by 99%Sneaky)
#1 Normal sudoku rules apply.
#2 159 Indexing: Digits in column 1 indicate the column in which the digit 1 appears in that row (e.g. if R3C1 is a 4, then R3C4 is a 1). The same applies in column 5 for the digit 5, and column 9 for the digit 9.
#3 Lockout Lines: Digits on blue lines cannot be between or equal to the digits in the diamonds at the ends of the line segment. The digits in the diamonds at the ends of a line must differ by at least 4. A diamond terminates a line segment.
Play on SudokuPad/CTC App
Solution code: Column 3
Comments
on 4. August 2026, 23:55 by Snaques
I just love how these 159 puzzles always seem to bring out the nicest strains of logic. They always look like there's no way and the you just working through and suddenly it's done.
Thank you for another great one!
on 28. October 2025, 04:33 by MysticMan
Great work combining two of my favorite constraints. Lovely puzzle!
on 9. March 2025, 16:02 by pazqo
Lovely interactions! I was stuck almost at the end then I found the final candidate elimination and everything felt into place!
-----
Thank you thank you! Glad to hear you made it over that final hurdle :]
on 8. March 2025, 20:57 by Fra314
Gorgeous puzzle! Pairing the LL with indexing so coherently together is mindblowing. WOW.
-----
Well this may be the kindest comment I've ever had, I don't know what to say except thank you oh so much :]
on 8. March 2025, 18:11 by Snookerfan
Very nice! Lock out lines are tricky, but they worked really well in this puzzle! Thank you
------
I agree they are tricky, and I would add they lead to unexpected logic. Thanks for playing this and so many of the puzzles I've posted.
