Joseki-related life-and-death example 11

    Keywords: Joseki, Life & Death

After the double approach (white+circle stones), B1-B9 are joseki.


If the corner group later gets surrounded (white+circle stones to indicate this), and the top side is white (white+square stones to indicate this) the moves W1-W5 are sente.

If black plays tenuki after W5, how can white kill?

White kills  

W1 and W3 are not hard to find, but the tesuji sequence of W5-W9 is quite nice.

Now black can try a number of things.

White kills  

Simply connceting is pointless. W11 and W13 create a bulky five.

White kills  

B10 attempts to create liberties along the top, to prevent white from cutting at a.

But still, after W11-W13, a bulky five is formed. Black is dead (Note that black should not be able to make eyes along the top, hence the requirement of the white+square stones.

White kills  

This B10 doesn't work either. After W13, black is captured. The same refutation works for B10 at a or b.

White kills  

With B10 here, black is trying to tempt white to cut. But W11 is simple and correct. If black plays B12 to prevent the bulky five, W13 cuts with atari, and black is captured in a ladder.

Joseki-related life-and-death example 11 last edited by HermanHiddema on November 30, 2009 - 23:16
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