TA 1999 Problem 4 / Solution

Solution  

here is a key point of shape. (Solution given by Kim Seong-june? 6d.)

Follow-up  

With in place, White has a very good follow-up sequence with and here. White has secured the corner, constructed perfect shape, and given Black serious shape problems on the side.

The recommended answer is an example of a play that is 'almost sente'. It isn't claimed that Black must answer it directly; but if Black doesn't, White has a great deal to look forward to here.

Game sequence  

In the actual game White attacked with and , but was in trouble after .

Game sequence  

Obviously is a good move if Black doesn't answer. The question I have is if the - exchange is favourable for White. Is Black's clamp less threatening now ? --Dieter

Charles So now White has covered the cut (at the point of ) in sente. That means that White can attack more strongly on the outside. I like as shown, from the point of view of direction.