Tsumego From Games 9 / Playing Sagari
( at )
looks reasonable. But after , what can Black do? is atari, leaving Black no time to make a second eye. Through , Black is dead.
Anonymous: But ,otoh, in this variation, black has at least 5 liberties (blocking 10 forces 12 at left of 6 to destroy the second eye) and win the semeai...
Bill: Are you talking about the previous diagram? captures the Black dumpling, so that there is no semeai anymore. Black just dies.
makes shape, but ...
is a sacrifice to prevent at a.
The block perhaps offers stouter resistance.
Black now has a few choices.
( at )
After makes an eye in the corner, - is a squeeze. The placement of prevents ko.
Black can prevent the squeeze by connecting.
After does Black stand a chance? If at , at .
Can Black prevail against the descent?
-- Bill Spight