Beginner Exercise 89 / Solution

Sub-page of BeginnerExercise89
[Diagram]

White dies

If White pushes at a, Black responds at b.

This is my first solution, hope I got it right... -phooky

lavalyn: Excellent work. Except that Black need not respond to a or b - either play by White and she dies in gote. Notice that to capture the three black stones requires both a and b - at which point she has only one liberty left. Thus White dies in shortage of liberties.

demetria wonders: Wouldn't white be more likely to respond with W2 at B3. Also wouldn't black answer the original W2 by setting up the ko first?

Roger? is confused. Sorry if I'm just a newb, but I don't see how Black can actually make the kill, if White plays at 'b'? Any move Black makes will get his center stones killed. The only option I can see is for him to go for a ko fight at e1.


[Diagram]

Shortage of liberties

Dan: Here is the situation after White plays at b in the previous diagram. As you said, Black dies if he makes a move... so he tenukis. White can't approach on either side (at a or b) without putting his own stones in atari. Eventually B could play at c and d (waiting until there are no ko threats if necessary) and pick up the White group, so it is not seki.


[Diagram]

How about this?

I think this is a reasonable response that would leave white with only false eyes. White might be able to live with a very small eye if it takes B5 first, but it looks like there'd be too little to gain.

[Diagram]

No.

B1 is atari.

[Diagram]

White gets a ko

Quacki: I thought about this B5 to be the solution, but white gets a ko after this one (Which I did not see until after I saw the solution).



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