Solution code: row 3, row 7 (18 characters, no spaces)
on 7. April 2022, 18:23 by jwsinclair
@Ragna, antiknight, Tilberg, Chelo:
Thanks for the nice comments, glad you all enjoyed it!
on 7. April 2022, 17:36 by Chelo
Very nice puzzle, thank you very much for setting!..
on 7. April 2022, 10:43 by Tilberg
I like puzzles with the negative constraint, they're usually fun to solve. This one here is no exception. Thanks!
Difficulty is more like 2-3 stars though, IMHO. If you know anything at all about 5-cell Renban lines, you'll have no problems getting through the puzzle.
on 6. April 2022, 23:59 by antiknight
I really like the break in and the logic in this puzzle. Thanks
on 6. April 2022, 23:19 by Ragna
Fun Fun Fun Puzzle! Thanks.
:-))
on 6. April 2022, 20:58 by jwsinclair
Thanks for solving and rating! If you or someone you know might enjoy a weekly set of puzzles that are a bit easier than the ones here, but still engaging and challenging, check out Artisanal Sudoku. Primarily killer sudokus, often in combination with other rulesets.
https://artisanalsudoku.substack.com