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Shapes related to the carpenter's square
Keywords: Life & Death
Please verify --Dieter Shape 11. No outside liberties
In addition, we will assume the marked stones, so as to give Black no escape routes to the outside. In this case, White can kill by playing the obvious placement at a.
We will consider the following answers by Black: the hane of a, the descent of b and the perhaps less obvious placement of c.
After
Black will eventually be forced to fill at a, after which his eyespace is almost filled with bent three. If White omits
Less intuitive perhaps is this variation.
In this variation, the outside liberties are important. Black puts up resistance, but White makes an eye in the stomach. She counts the inside liberties for a total of three. Black has only two outside liberties and falls short.
If
If
The cunning placement of
If White connects with
If
[1] Comments:
Nope... after 2. Outside liberties
If Black has an extra liberty, this variation doesn't work anymore. Black lives through capturing a bent four.
Same thing
If
The placement too works.
As with this seki. Shape 2
This one looks alive. Any attempts ? Matthew Woodcraft: I can't see a way to kill.
Charles Matthews I believe ko is the correct answer.
unkx80: How about Authors This is a copy of the living page "Shapes related to the carpenter's square" at Sensei's Library. ![]() |