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#1: bugaboo (bugaboo) on Feb 6, 2012

color logic
then an EXCELLENT opportunity for summing on the red
then smile logic on the blue at the bottom
then elimination/affirmation logic on the green on the right side
no guessing

You are the master of fun color logic. :)

Tricky bits on the red and green.

I did this in color order KRGB. The black was trivial.

The red is an alternating smile as signaled by the red 1s in the down clues. Since r15 has 5 red clues and r16 only has 4, the leftmost and rightmost red column clues must correspond to r15 clues.

The green was also doable with a combination of color and smile logic. On the right side, the smile logic is extended. (It "goes through" the two pixel green spot in c13r9-10.)

Then line logic for most of the blue with smile logic to finish.

Nice solve.

Found to be logically solvable by gator.

I solve it how Joe did (I spotted the alternating smile logic right away). Great solve!

Fun puzzle, Kwanlu.

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