In message <[email protected]>, Rémi Coulom <[email protected]> writes

On 20 févr. 2011, at 19:53, Nick Wedd wrote:


Crazy Stone is probably wrong, too, because there are some complicated things happening around S6. I would say S6 is dame, not S7 and S5. B12 and P1 look like really weird dame, though. So do K15 and N12. The right-side of the board is complicated, but the rest should be obvious for GNU. Unless I am mistaken...

Something must be wrong. There are problems in this position. But S6 is not one of them, it is very clearly black territory. Maybe you have the wrong SGF files, or they have been rotated?

Nick

After Black connects all the false eyes in the top right, and White fills dame, then White could kill by atari at T6. So I believe Black must play S6 to prevent T6, so S6 is dame.

Yes, I see now that you are right.

Many Faces of Go version 11 gets this wrong. It shows the twelve p13 stones as dead, but s12 as black territory.

Nick

I am really having a lot of fun with Japanese rules :-)

Rémi
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