Puzzle Description:

(This puzzle was recovered from the 2016 database crash. Puzzle creators, please edit this puzzle and put the real description here!)

#1: Ki Bitzar (kibitzar) on Nov 23, 2018

Beautiful color logic puzzle. Not easy, but lots of fun!

I agree. Excellent, non predictable puzzle. I tried doing it with edge logic at first but got nowhere. Eventually I found patterns in the green lines that could be used to solve the puzzle. I enjoyed it.

Nice image!

Found to have a unique solution by wombatilim.

Found to be solvable with moderate lookahead by wombatilim.

Initial line & careful color logic gets 36% complete with all of the green finished. Black and blue still remain. Most of what's done is in the middle, but some of the upper right is started.

* R4: The blue 5 can go in either C7-11 or in C38-42. C7 has a blue 2, but neither R3 nor R5 has a blue available here (R3 would not be past the black 6 yet, and the blue 6 in R5 has already been started in C37-39). Therefore, the blue 5 must be in C38-42.

Line & more careful color logic to finish.

* I'm actually not sure whether this counts as lookahead or pure color logic. If I were marking dots for "blue or not blue" that 2 in C7 would have been blocked off, and working out the position for the 5 in R4 would have been pure color logic. I'm willing to update this rating if the general opinion is that it falls within normal color logic.

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