Attached is a very simple position which adresses the problem of what is
inside and what is outside. A seemingly logical definition of inside is that
the point is enclosed by stones of one color and/or the border. Or the
fireman-algorithm. If one traverses along an own wall and/or the border in
the same direction and comes back to the point. But in the given position a3
and all the other 257 intersections are according this definition also
"inside". It would never come to the mind of a human player the the 3 black
stones enclose the 257 intersections.
The message is: Tasks which are for a human completly trivial are hard to
formalize.
Chrilly
InsideOutside.sgf
Description: Binary data
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