What else can we learn from this corner, besides train reading the outcome?
tderz: the hiki of the tsuke-hiki combination - was a good shape move.
tderz: After the vulgar atari ,
Black must come back in gote and defend the cutting point a.
This gives White just enough tempo to save her group with b + c ("6 on the 2nd line in the corner lives").
Why is so vulgar, so bad? (in comparision to above )
- First, as explained, it loses a tempo.
- Secondly (of course linked) it removes a weakness of White:
Removal of white weakness
tderz: is a weak spot in White's formation:
Black can peep there and has the miai pairs a-b and c-d to kill.
Right: The weakness has been removed (it's white's turn on the right side)