Solution code: The marked rows.
on 10. July 2024, 19:11 by uvo
Yes, puzzle championships are usually done with pen and paper. You are allowed to use coloured pencils if you like - makes it harder to erase if you made a mistake, though.
Keep in mind that there are a lot of puzzles, even the hardest puzzles shouldn't take longer than 10, maybe 15 minutes (for the top solvers).
on 10. July 2024, 18:37 by snuuba
Maybe championship is competed with pen and paper? I for one would never finish that way. With computer and ability to use coloring made this puzzle feel like 2.5 stars at most. Anyway very nice puzzle and should have higher rating. Thanks
on 5. July 2023, 15:33 by cdwg2000
Very nice!
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