prevents the capture of two stones and makes shape. She has to be careful in answering
and
.
The throw in at is tesuji. White can't block at a with
because of shortage of liberties, but captures at
instead.
JamesA: Is it necessary to throw in? Can White just play at straight away?
unkx80: Both will lead to the same result.
After Black's capture of two stones with , White can recapture at
, and has two eyes at a and b.
If instead of throwing in, White blocks at ,
starts a ko.
on the 2-2 point doesn't give life. After the connection at
, White still has only one eye in the corner. Black can also play atari with
at
.
Connecting at is the third way to save the two stones. Black plays hane at
and makes a placement at
- and White is dead, because now a and b are miai. Black could also kill by playing
on the vital point of this shape, namely
.
ProtoDeuteric: Does this work?
Problem 10
Back to KanazawaTesujiSeries