Lockout Lines were introduced 12 August 2021. This puzzle is to commemorate that milestone.
Rules
• Normal Sudoku rules apply. Place the digits 1-9 in each row, column and box without repetition.
• Lockout Lines: Digits on blue lines can not be between or equal to the digits in the diamonds at the ends of the line. The digits in the diamonds at the ends of a line must differ by at least 4. A diamond terminates a line segment.
Solution code: Column 5 Top to Bottom
on 22. September 2025, 02:49 by eap314
This is actually a wonderful intro to this ruleset. Thank you.
on 22. August 2025, 00:36 by LNOMISL
Nice easy puzzle, first time with this rules and nice introduction
25min for me
on 5. August 2025, 19:27 by buzzT
My first lockout lines puzzle and i enjoyed the logic. Thank you.
on 4. August 2025, 20:10 by PancakePie
What a beautiful, fun flow! Thanks for this.
on 2. August 2025, 14:12 by silent_rob
A lovely, approachable Lockout Lines puzzle. I’ve only done a couple of other Lockout Lines puzzles before and this one was definitely the smoothest solve of those I’ve tried.
on 2. August 2025, 07:31 by Piatato
Fun one, thanks!
on 2. August 2025, 00:16 by Merdock
I've never done Locked Out Lines before, but the way you set this puzzle, it was pretty intuitive to see how the rules flowed. Once I figured out the trick to these lines, everything fell perfectly into place. Thank you for the brilliant puzzle.
on 1. August 2025, 20:33 by Exigus
Super nice. Thanks!
on 1. August 2025, 19:20 by Andrewsarchus
Nice smooth solve!
Happy Birthday, Lockout Lines!
on 1. August 2025, 19:19 by Fra314
Super smooth, fantastic setting, great puzzle!
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