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OngoingGame2Move174

 

Solution To OngoingGame2 - Move 174
  Difficulty: Advanced   Keywords: Question

[Diagram]
Diag.: Ongoing game 2 - Black cannot block

After White 1, Black tries to capture her stone with Black 2. White answers calmly at 3.

What should Black do next?


[Diagram]
Diag.: Black's block - variation 1

If Black plays at 1, White cuts through his position with 2. Black has to answer at 3 and 5, otherwise he loses the six black stones on the left.

So, applying the proverb "Your opponent's good move is your good move" Black might try to protect against White playing at 2.


[Diagram]
Diag.: Black's block - variation 2

So let's assume that Black plays Black 1 here.

Next White plays 2.

Can you read out the ladder?


[Diagram]
Diag.: Variation 2 - the short ladder (5 connects)

If Black uses 3 to capture the white stone, he loses very quickly. After 7 the black stones are lost.


[Diagram]
Diag.: Variation 2 - the long ladder (7 connects)

If Black uses 3 to run, the ladder becomes longer.


[Diagram]
Diag.: Variation 2 - the long ladder (continued)

After White 4 Black's group is in damezumari and Black cannot connect (white would capture at a).



So, Black cannot capture the original white stone, but instead has to save his own stones.

[Diagram]
Diag.: Ongoing game 2 - Black plays it safe

Note that White still has some good aji around this area.



--ArnoHollosi


Lo! Behold AvatarDJFlux!! Praise to the Finder Of The Much Difficult Black Answer At 175!!!
;-)))



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