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#1: JoDeen Mozena (ozymoe) on Apr 5, 2009 [HINT]

I enjoyed solving this. It was completely solvable by logic alone if you count one instance of "edge logic"...and that was on the top with black.

Trying the top six black squares in the first possible location results in one "sure" black square...and from this one square everything else is solvable with no more "edge logic" needed.

Have we ever come to a consensus as to whether having to resort to "edge logic" is "guessing"? My feeling is that it is...albeit an educated and productive guess.

Edge logic IS logic. It's not guessing; more like an IF THEN statement, but still logic.

Jan explained once that if you can think ahead two or three steps in your head using "ife-then" logic, that is edge logic. If you can't think ahead a few steps in your head to figure it out and just try it one way to see if is works, that is guessing. In this case, I could have used edge logic, but my brain was too tired to think ahead, so I just tried some obvious guessing, and that worked for me.

Cute puzzle.

Edge logic does indeed make this logically solvable.

Found to be logically solvable by Gator.

You could have also used edge logic with the 3 clues in columns 5 and 16 to get to the solution.

nice potato head

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