Snapback Problem 16 / Solution

Sub-page of SnapbackProblem16

White dies a slow death.

[Diagram]

White 5 and 7 at 3, Black 6 at 1

The White group is dead. The best resistance I found was to set up a nice snapback to catch the marked stones with W1.


DomQ The situation after Black 4 above is this. White is in a situation to snap-back the circled stones, but oddly enough this will not save her!

[Diagram]

Is White saved?

White plays b, black captures with a, white b again capturing all circled stones.


And the result is...

[Diagram]

Nope!

But the white shape has an obvious weak point!

[Diagram]

White dies

After B5, White won't be able to set up another snapback because of the liberty at a.

Playing 2 in 3 does not work either: Black captures the marked stone with 2, White attempts a Ko with 5 but Black declines, connecting all its stones together (at the location of the marked white stone). White is left with only one real eye.


ProtoDeuteric: For a related problem, see RTG Problem 20


Quicker deaths

[Diagram]

White captures first

Capturing the two Black stones won't help for long.

[Diagram]

Black 3 connects at the circled stone


[Diagram]

Black 4 at 1

White dies even faster.


Authors


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