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DroppingBackProblem1

 

Dropping back problem 1 / Solution
Sub-page of DroppingBackProblem1

[Diagram]
White connects in sente

W1 forces B2 to save the corner (White can get a ko to kill it). Then White plays tenuki here.


[Diagram]
Dropping back

The point being that B1 and B3 are sente plays now, but don't break through, an example of dropping back. Nothing difficult, with WC in place; but you have to see it in a real game to feel the force of it.



[Diagram]
Going back to the start

Assuming this came about as a result of the play WC here, B1 is required. After B3, can White take still take sente?


[Diagram]
Going back to the start (continued)

This is much more profitable for Black (next Black a and White will have to take the BC stones); so that in practice White may not be able to take, should play reverse sente.



In the real game the WC play was a bit more like an endgame tesuji.

[Diagram]
Going right back to the start

The way the problem was set makes this WC/BC exchange first look better.

Charles Matthews



This is a copy of the living page "Dropping back problem 1 / Solution" at Sensei's Library.
(OC) 2004 the Authors, published under the OpenContent License V1.0.