In a recent game, I played against a player who really loves to cut one-space jump from the third line. This caught me off guard, and I don't think I responded well. The first case is:
and so B1 becomes connected to the left side, significantly removing while influence.
Maybe the real mistake is that the pincer 2 is wrong -- I am not sure.
In the second example,
I live after entering 3-3, but white get a wall which I want to avoid initially by the one-space jump.
Any suggestion on what I should have done? Thanks.
On responding to cutting one-space jump
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EdLee
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Hi GoStudent,
In your first diagram, if you were White, and B forced you to get your ponnuki in sente, the result is very good for White.
When you jumped to
, you allowed B to connect his 
and 
stones, as he did in your diagram. If you played at 
instead (kosumi) then B could not connect and -- homework: prove to your satisfaction this is true. This way, you could fight with B; this is another option for White.
. is too close to your powerful W wall. A pincer is a good idea. Exactly where to pincer is another question. Perhaps your 
is a bit too close to your own wall (same mistake as -- too close to thickness), but this is not a mistake at your level. The idea and direction of your pincer are OK. No problem.
In your second diagram, if you were
, then 
was very strange. Instead, you should've ponnuki'd in sente (!!) -- play at 
yourself -- just like in your first diagram, and the result would've been very good for .
Instead of
, of course W must reply to your 
atari by extending at . Both and were big mistakes -- both of you did not understand the value of the ponnuki.
__________
( Local time: Fri Dec 19, 2014. 11:53 am )
In your first diagram, if you were White, and B forced you to get your ponnuki in sente, the result is very good for White.
When you jumped to
, you allowed B to connect his and stones, as he did in your diagram. If you played at instead (kosumi) then B could not connect and -- homework: prove to your satisfaction this is true. This way, you could fight with B; this is another option for White.No. You have some big misunderstanding about influence, the situation, and the value of W's ponnuki in sente. This result was very good forand so B1 becomes connected to the left side, significantly removing while influence.
.No, again.Maybe the real mistake is that the pincer 2 is wrong -- I am not sure.
is too close to your powerful W wall. A pincer is a good idea. Exactly where to pincer is another question. Perhaps your is a bit too close to your own wall (same mistake as -- too close to thickness), but this is not a mistake at your level. The idea and direction of your pincer are OK. No problem.In your second diagram, if you were
, then was very strange. Instead, you should've ponnuki'd in sente (!!) -- play at yourself -- just like in your first diagram, and the result would've been very good for .Instead of
, of course W must reply to your atari by extending at . Both and were big mistakes -- both of you did not understand the value of the ponnuki.__________
( Local time: Fri Dec 19, 2014. 11:53 am )
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gostudent
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Re: On responding to cutting one-space jump
Thank you for the explanation!
I have one follow-up question. If black wants to be connected, is giving white the ponnuki the only choice? The following sequence doesn't work, for example.
I have one follow-up question. If black wants to be connected, is giving white the ponnuki the only choice? The following sequence doesn't work, for example.
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EdLee
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It doesn't work becausegostudent wrote:The following sequence doesn't work, for example.
is completely wrong,resulting in this disaster broken shape for Black: ( See also Toothpaste. )
Can you find the correct move (only move) for
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gostudent
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Re:
Thanks. I think more about it, and a better sequence is:EdLee wrote:It doesn't work becausegostudent wrote:The following sequence doesn't work, for example.
resulting in this disaster broken shape for Black: ( See also Toothpaste. )
Can you find the correct move (only move) for
There is still a cut point at a. If black cannot handle the cut, B1 would still fail to connect the two black stones.
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EdLee
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gostudent wrote:There is still a cut point at a. If black cannot handle the cut, B1 would still fail to connect the two black stones.
- Good, you found the correct atari, the only move.
- If the cut (a) is severe for Black, then B can fix it with
, and give up connecting to 
, yes. - Did you notice
is now damaged -- broken shape for W ? (See post 4, again). - Please see Toothpaste (post 4, again).
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EdLee
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Hi GoStudent, to recap:
If W does not want B to connect, W has
kosumi (among other choices).
(Prove to your satisfaction this is true.) Instead, if W chooses to jump to , AND attaches under,
now W has 2 choices (among other options):
For global consequences, we must look at the specific whole board situation.
If W does not want B to connect, W has
kosumi (among other choices).(Prove to your satisfaction this is true.) Instead, if W chooses to jump to
, AND attaches under,now W has 2 choices (among other options):
- Let B connect.
- Capture , but as a result, suffers.
For global consequences, we must look at the specific whole board situation.