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Comments on Puzzle #39037: Great Blue
By derby (Derby)

peek at solution       solve puzzle
  quality:   difficulty:   solvability: deep lookahead?  

Puzzle Description Suppressed:Click below to view spoilers

#1: Adahn (Adahn) on Dec 24, 2024

Beautiful image! (though I'd really prefer it to be a bit smaller, so as to fit into single screen)
And oh boy, this took me quite some time and a lot of concentration to finish. I solved this without real guessing, but on two occasions I had to invalidate seemingly obvious dead-ends via deep lookahead. Still, I can only hope I didn't make any errors in logic.
#2: derby (Derby) on Dec 25, 2024
Thanks for your comments. I feel the puzzle can be done without guessing, although sometimes you have to fight for every pixel.
#3: Philip (Philip) on Jan 19, 2025
I think I only used moderate lookahead, with lots of very tricky color logic. Very difficult, but rewarding solve!
#4: LoloJean (LoloJean) on Feb 3, 2025
I definitely had to look more steps ahead than I could keep in my head at once, but that might have been due to missing easier paths forward.
#5: LoloJean (LoloJean) on Feb 3, 2025
Image is well worth it though

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