BQM 364

    Keywords: Opening, Question
Cho Hyeon-hun (white) vs. Li Changho (black)  

Imagist: This game record comes from Janice Kim's fifth book, The Palace of Memory. The example focuses on the shape of W7 (capping at the head of two stones), but the move that I find interesting is B2. I can see how B6 is large enough to tenuki after W5, but the B2, W3 exchange seems obviously loss-making. Why exactly is B2 big enough to allow W3?

LukeNine45: Did Black win? Maybe it wasn't big enough ;)

Chris Hayashida: Not that it matters in this case, but W7 is a hane and not a cap. Not answering the kakari with B3 is a small loss, but not as big a loss as one might think. I suspect that weakening the left side might be bigger than answering W1 with B3 and then having to respond later to a white play at a. I'll let someone stronger comment on this diagram.

xela: I'm probably not the "someone stronger" that Chris is looking for, but I did search through GoGoD and found two games in which this exact position occurs. Both games involve the same two players, same colours, and white wins one out of two!

The position after W1 in the top diagram is a common one, and B2 at W3 is indeed the most popular response: 57 games in my collection, but white wins 32 out of 57.

B2 in the diagram above is a big move simply because it makes B6 possible. Here are the next few moves:

continuation; B9 at W4  

Next black played at a, and then white at either b (7th November 1995; white wins by resignation) or c (28th August 1995, black wins by 5.5 points).

Imagine what this would look like without the black+circle and white+circle stones--black+square doesn't work so well unless black+circle is already there.

BQM 364 last edited by Dieter on July 5, 2008 - 12:49
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