Wedge - when the approach to 3-5 is possible

  Difficulty: Advanced   Keywords: Opening
Very distant  

There are good reasons for not counting W1 here as an approach play, in relation with Black's 3-5 point stone.

Black encloses  

The exchange of white+circle for B2 is normally reckoned as a loss for White.

Considering the whole side  

In order to appreciate White's play one must look at least at the whole side. Here, clearly enough, W1 functions as a wedge, but W1 and W3 permit Black ryojimari with B4.[1]

Considering the whole side (2)  

Clearly the positioning of W1 indicates that White would be happy in the overall position to settle a group with W3 here.

An example where this is known in pro play is in a Kobayashi variant:


This is from Hong Min-p'yo-Ch'oe Ch'eol-han (B) 2003-03-07. White uses caution in playing into the formation of the black+circle stones.


Black rejected the idea of simply taking the corner, instead applying a staircase technique with B2 and B4. This forced the issue, since White here can hardly allow a big corner. In the end Wc is captured in a ladder, but White next can fight out at a.


The end position here would differ by one line from the Kitani wedge idea in the enclosure opening.

Kitani's wedge  

Charles Matthews

Wedge - when the approach to 3-5 is possible last edited by CharlesMatthews on May 24, 2003 - 11:53
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