Wedge against Mark II Kobayashi

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[Diagram]

Kobayashi's second formation

The Mark II Kobayashi formation leaves a space ten lines wide; so that there is the opportunity for White to play a wedge at either of the circled points.

This, however, rarely happens in pro games. It seems clear that if White plays a wedge, Black can play a checking extension from the right, for example at a, and White will extend towards black+circle, which is low and solidly supported, so that White extending towards it makes Black's enclosure look good.

[Diagram]

Open side approach

What is generally seen is that White first plays to limit the framework, in the important area near the marked point, or approaches Black's 4-4 point from the open side with W1.

-- Charles Matthews


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