Erik van der Werf: 
<[email protected]>:
>AFAICS this (japanese-test-7.sgf) is simply not a final position. If
>white plays first at least there's a ko and he will probably capture a
>lot of black stones. Moreover, I think officially the group would be
>in seki if the dame are not filled (so then none of the intersections
>around S6 are territory).

Yes, the game is not finished.  White can capture T18 with a ko fight 
in this position.  Current Japanese rules force the players fill all 
dame's before finishing a game. 

And, as a terinology, we never call S6 dame.  A dame must be in a 
boundary of the territories (ie, never in a terrotory).  Just Black 
has to play S6 (or around) before the game ends, in this case.

Hideki

>Erik
>
>
>Of course Black's position is hopeless so he might as well have resigned.
>
>On Sun, Feb 20, 2011 at 8:06 PM, Rémi Coulom <[email protected]> wrote:
>>
>> 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.
>>
>> I am really having a lot of fun with Japanese rules :-)
>>
>> Rémi
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Hideki Kato <mailto:[email protected]>
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