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Drew
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by Drew Tue Feb 17, 2015 1:15 am
I'm looking for advice on handling this 3x3 invasion:
$$
Click Here To Show Diagram Code [go]$$
In a recent game we ended up as:
$$
Click Here To Show Diagram Code [go]$$
which seemed reasonable but I'm curious if there are better possible outcomes for Black?
Uberdude
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by Uberdude Tue Feb 17, 2015 1:34 am
Do you think white is alive?
Krama
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by Krama Tue Feb 17, 2015 1:53 pm
play 7 on 2-2 in the corner and try to live with white.
EdLee
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by EdLee Tue Feb 17, 2015 2:01 pm
Krama wrote: [jump] in the corner
Do you think that's the best move for B ?
Bill Spight
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by Bill Spight Tue Feb 17, 2015 2:33 pm
EdLee wrote: Krama wrote: [jump] in the corner
Do you think that's the best move for B ?
It's not a jump, it's a clamp.
But your question is excellent.
The Adkins Principle:At some point, doesn't thinking have to go on?
EdLee
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by EdLee Tue Feb 17, 2015 4:37 pm
Thanks, Bill. Many beginners are so happy because they spot a vital point,
and they are so excited they "jump" in the placement. So I emphasize the "jump in" bad habit.
Bill Spight
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by Bill Spight Tue Feb 17, 2015 5:22 pm
EdLee wrote: Thanks, Bill. Many beginners are so happy because they spot a vital point,
and they are so excited they "jump" in the placement. So I emphasize the "jump in" bad habit.
OIC.
The Adkins Principle:At some point, doesn't thinking have to go on?
Boidhre
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by Boidhre Tue Feb 17, 2015 7:15 pm
EdLee wrote: Krama wrote: [jump] in the corner
Do you think that's the best move for B ?
$$
Click Here To Show Diagram Code [go]$$
Edit: Sorry, forgot to include the reason, this seems to leave fewer ko threats for white later.
EdLee
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by EdLee Tue Feb 17, 2015 8:29 pm
Hi Boidhre,
Boidhre wrote: ko threats for white later.
Can B do better ?
Boidhre
Oza
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by Boidhre Tue Feb 17, 2015 8:52 pm
EdLee wrote: Hi Boidhre,
Boidhre wrote: ko threats for white later.
Can B do better ?
Last attempt before bed:
$$
Click Here To Show Diagram Code [go]$$$$
Click Here To Show Diagram Code [go]$$
No internal ko threat for white in either of them. I spotted
alone killed when I first looked at this but it left rather a lot of moves for white to play inside for threats later.
EdLee
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by EdLee Wed Feb 18, 2015 5:51 am
Hi Boidhre,
$$
Click Here To Show Diagram Code [go]$$Food for thought:
There may not be any ko the rest of the game. (We don't know yet.)
How useful is
Same question for
Bill Spight
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by Bill Spight Wed Feb 18, 2015 8:25 am
Using my heuristic, compare
$$Bc
Click Here To Show Diagram Code [go]$$Bc
with
$$Bc
Click Here To Show Diagram Code [go]$$Bc
The Adkins Principle:At some point, doesn't thinking have to go on?
Boidhre
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by Boidhre Wed Feb 18, 2015 10:22 am
EdLee wrote: Hi Boidhre,
$$
Click Here To Show Diagram Code [go]$$Food for thought:
There may not be any ko the rest of the game. (We don't know yet.)
How useful is
Same question for
EdLee
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by EdLee Wed Feb 18, 2015 2:40 pm
Hi Boidhre,
If
at 2-2, then
takes in sente -- miai of
and
:
$$B
Click Here To Show Diagram Code [go]$$BBoidhre wrote: $$
Click Here To Show Diagram Code [go]$$Above var, instead of connecting at
...
takes in sente:
$$W
Click Here To Show Diagram Code [go]$$W
Conclusion:
hane is not a correct move.
EdLee
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by EdLee Wed Feb 18, 2015 7:02 pm
Hi Boidhre,
$$
Click Here To Show Diagram Code [go]$$Locally , each of
(a),
(b), and
(c) kills.
(a) and
(b) are about the same.
(c) -- B has to be careful, because this involves B's liberties,
and B has to watch out later, if the (d) ladder becomes good for W.
So perhaps the placement
(b) and clamp
(a) are slightly better.
Globally, it depends. Re: Bill, post 12.
alone killed when I first looked at this but it left rather a lot of moves for white to play inside for threats later.
(a) for Black for the rest of the board ?
takes in sente -- miai of 
and 
:
takes in sente:
hane is not a correct move.