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Taasog Erratum 1
   

Page 38-39 Diagrams 9 through 14

[Diagram]
Diag.: Problem diagram: Black to kill

[Diagram]
Diag.: Main variation

White is in DameZumari at A and B. Everything OK up til here.


[Diagram]
Diag.: Second variation

The second variation, presented as "if white makes the diagonal attachment of 2", shows an extra black stone - the marked stone here. If that stone is in place, Black 3 at A still works. When it is NOT in place, too. This is just awkward but not really inconsistent.


[Diagram]
Diag.: Third variation

The third variation, white connecting at 2, requires a tesuji, namely Black 3, creating DameZumari. However, this is only necessary when the marked stone is NOT in place. With the marked stone in place, black can play 3 at 5 immediately.


[Diagram]
Diag.: Third variation: a question mark

White can't play at A: he is already in damezumari !


[Diagram]
Diag.: Third variation: cont.

The circled spot is now empty. Now White CAN play at A.

So B 5 is better at a, making ko. --BillSpight


[Diagram]
Diag.: Third variation: cont.

Therefor, black exchanges 3 for 4 and only then he cuts at 5. Now white is unable to play at A because of DameZumari.



Variation 2 being awkward, and the comments in variation 3 being inconsistent with the diagram, it is my opinion that the marked black stone should not be in place in diagrams 12, 13 and 14.

-- DieterVerhofstadt (1k)



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