[admin]
This discussion was part of the 2013 LG Cup thread ( viewtopic.php?f=13&t=8474&p=152713#p152713 ).
IMO, it is interesting enough that it deserves its own thread.
[admin]
I just replayed the Chen-Iyama game and I ask myself whether Iyama misread the Aji before he decided to double-Hane on move
? The result up to Black 101 seems horrible for White - Black settling his weak-ish group and taking away almost all territory White had. The cut at White 106 also seems to hint that White needs to make something happen.To back up a bit, I feel by move
White is behind. I for one already didn't like the Joseki outcome in the bottom right for White (and styler-points for Black for not playing the large avalanche in the top left : D) and Black's Tenuki on 
for a patient defensive move seems to me like Black is confident he can keep White's left in check, although White got - for a moment - a nice double attack.In the end White lost both - I guess - last resort Kos, that's also quite something.
Record from http://igokisen.web.fc2.com/news.html
, after playing 
from outside, it looks an inconsistent decision to attack from inside. 
is to prevent the connection at 'a'. Then 
separates the two groups, at the same time helping the 
group. If black run into the central area, white can naturally reduce black's bottom potential.
is a following tesuji. Depending on what white does next, black either cuts off the stone inside, or benefits from something outside (in this basic shape, that means killing the outside stone by a ladder).