Main line: Hashimoto Utaro
Variations: Dieter
After , both a and b, and c and d, are miai for life.
For those who have solved or looked at the earlier problems in this series, this line of play
will have become familiar. After , if Black connects at a, White captures three stones to make a second eye .
It would be a mistake for White to answer at a (next diagram).
Black turns the corner into ko with the throw-in at .
The 1-2 point is not the right spot to make life for this group.
After the sequence to , Black throws in at
to leave White with a big eye.
What is wrong with at
? HandOfPaper
Bill: If at
, then
at
, and White has only one eye.
Descending with is also wrong. Black plays hane at
, making miai of a and b for the kill.
This may be the hardest one to refute. After
, White can't play at a because of
shortage of liberties. If she captures at b, Black plays at a himself to make the eye false.
White at here, gives the same result as if White played w1 correctly at
here, but errs with her
second move, by answering
at
(see earlier diagram). White lives in ko, which is not good
enough.
Back to Kanazawa Tesuji Series
Go to Problem 5