Igo Hatsuyōron 120 and
Go-Playing Programs (2009 - 2011)
The Hanezeki
However, one fundamental weakness remained in force until today: The implications of the hanezeki are beyond the program's capabilities. This fact can be cushioned successfully by case-related modifications to the hanezeki, before the analysis starts. |
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Once the tail of the hanezeki has no more outside liberties (as here in the diagram at left, after the Crosscut Sequence, indicated with /), the program will often mistakenly continue with , both with White, and with Black. In fact, a White move at loses about 20 points, and a Black move at does not rescue 20 stones, but means suicide. |
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Here, the program can be helped by inserting a move sequence before the guzumi (with now), which turns the hanezeki into a real seki. The result is shown in the diagram at right (with White's three stones that are captured by already removed). | |