One could try to solve the problem by the additional rule: The inside point must be inside the bounding-rectangle of the string. This works in the position in InsideOutside.sgf, but if fails in InsideOutside2.sgf. The problem can be solved reasonably. My point is: Even a - from the human point of view - simple problem is quite tricky. It is difficult to define "waterproof" rules.One could use the heuristic that the outside is larger than theinside, but perhaps a situation can be created where this is not true. This might even be something beginning Go players could see/ understand.Peter Drake Assistant Professor of Computer Science Lewis & Clark College http://www.lclark.edu/~drake/
This is one of the reasons that full-width Alpha-Beta does not work well. If there are some exceptions to a rule a (deep) searcher finds them. In chess one solves the problem by giving only the 100% rules a full weigth. 100% sure is the material-count, mate and stalemate. If e.g. a piece is attacked, there is some extra bonus for the attack, but this bonus is small in comparison to the material value of the piece. The full attack-bonus is only given when the piece is definetly off the board. The most difficult piece to evaluate is a passed pawn. There is no clear material value of a passed pawn.
Chrilly
InsideOutside.sgf
Description: Binary data
InsideOutside2.sgf
Description: Binary data
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