Black has one eye at the circled point.
makes miai of the capture at a and the connection underneath at b, capturing two stones.
After the connection underneath, White can't give atari at a.
Black makes four points capturing two stones, while White makes seven points (circled + captured).
Black makes a second eye with , and two points there. White can play neither at a nor at b because of shortage of liberties.
White makes four points capturing the stones, and one point at the circled points (Black has to throw in a stone to prevent an eye).
The difference between the two variations is (5 - 2) - (7 - 4) = 0. So White can decide her answer according to the global position.
The vulgar atari of is a painful mistake. It's a so-called anti-suji, missing completely the proper line of play.
White answers at and the connection underneath at a doesn't work any more. White must not play anti-suji with
at b, for Black will descend to c and make the connection work again.
Forcing White's answer with loses points. There is no need for Black to lose the stone at
.
Can't White answer this way?
Go to Problem 8
Back to KanazawaTesujiSeries.