Korean amateur, who tricked Jimmy Cha in joseki
leehan2 on Cyberoro and Dashn is Kim Jongwoo, 7-dan ama.
Not the strongest amateur in
Korea, but he won some tournaments in early 90's.
In this game he used his famous hamete (I have 100+ leehan2 games
with this pattern on my database).
Actually, it's not his own invention. I saw it in Kajiwara
Takeo game long time ago (typical idea for Kajiwara!)
It was a big surprise for Jimmy Cha, it seems.
You can see how he got tricked