Puzzle Description:

#1: Jan Wolter (jan) on Dec 29, 2008

Boring image, but slightly interesting to solve.

Slightly is being a gentleman as Jan is always ....

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This puzzle is definitely solvable by pure line solving (looking a one row or column at a time). Even the somewhat dim-witted "helper" can solve it without help. What makes the puzzle "slightly interesting" is that the way forward isn't always obvious to human eyes.

However, yes, the term "logically solvable" is used here in a sense more narrow than the strict mathematical sense. In the strict mathematical sense, any puzzle with a unique solution is logically solvable. The following logical procedure will work: (1) Generate every possible combination of black & white cells, (2) Check them all against the clues, (3) the one that works is the correct solution. So, yeah, lots of things are logically solvable in this sense, but who cares? We are looking for things that make elegantly solvable puzzles.

Hmmm...I almost like that. "Elegantly solvable" instead of "logically solvable". But that would open up a whole different set of arguments.

So I've got several definition of "logically solvable" as applied to this site, which I think are all pretty much similar: (1) Solvable without substantial backtracking, (2) solvable in ink, and (3) solvable using only the solution techniques covered on the "Advanced Puzzle Solving Techniques" page, and other similar methods.

No guessing or trial and error. Merili stated what I was going to write.

Once again, what does the title has to do with anything ?

It's a picture of a triangle in a triangle. And although it may not be your perfect triangle, it's still more of a triangle than a square or circle.

i'm a newbie, and it was line solvable to me

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