Gokyo Shumyo, Section 1, Problem 24 / Solution

[Diagram]
The 1-2 point  

Strange things happen at the 1-2 point!

Thanatos13: Belly hit sounds right. see belly attachment tesuji

[Diagram]
Main line  

After Black captures two stones at 6, White throws in with 7 at 5 (next diagram: 1 = 7 here)

[Diagram]
Continuation  

If Black connects with 2, White 3 creates a snapback. If Black 2 at a, White 3 again does the trick.


[Diagram]
Variation 1  
[Diagram]
Variation 1A  
  • If Black 6 at a, White 7 at 1 captures and makes a living shape.
  • If Black 6 at 1, White 7 at b makes a second eye.
  • If Black 6 at b, White 7 at a makes life.
[Diagram]
Variation 1B  

[Diagram]
Wrong 1  

[Diagram]
Wrong 2  

KarlKnechtel: This diagram seems to suggest that a and b are miai, but I'm not convinced:

[Diagram]
Wrong 2  

Isn't this seki? If Black tries to play at either a or b the resulting capture leaves a living BentFourInTheCorner, since in each case there are miai to cut the space into two parts.

unkx80: This is not seki, this is a dead group. Please refer to rectangular six in the corner. Also, what you called the bent four in the corner should be simply termed as bent four.

KarlKnechtel: (after referring as requested) Ah. I neglected that Black's play at a would capture the group with the outside liberties filled :) Forest and trees are miai in my vision it seems ;)

Also, could someone refute this White 1 below (which was my instinctive, 5-seconds-of-thought answer):

[Diagram]
Wrong? (6 at 1; but is this the best line after 1?)  

unkx80: Of course White 1 is wrong. Otherwise this diagram is perfect.

Rauli: I beg to differ. 6 should be at 8. Style ;-)
unkx80: This I know. Just that I do not want to be that nitpicking. =)

KarlKnechtel: I can get *something* right at least then ;)

And just to follow up, White 3 at 4 leaves a dead shape in the large corner eye, and Black plays 4 at a to prevent a second eye. Right?

unkx80: Yes.


[Diagram]
Wrong 3  

Problem 25
Back to Kanazawa Tesuji Series


Gokyo Shumyo, Section 1, Problem 24 / Solution last edited by thanatos13 on May 10, 2009 - 02:06
RecentChanges · StartingPoints · About
Edit page ·Search · Related · Page info · Latest diff
[Welcome to Sensei's Library!]
RecentChanges
StartingPoints
About
RandomPage
Search position
Page history
Latest page diff
Partner sites:
Go Teaching Ladder
Goproblems.com
Login / Prefs
Tools
Sensei's Library