Saturday, December 4, 2010

Saturday Tsumego

Let's do some brain exercise in this beautiful Saturday. Black just played at A (which is a mistake). White to play and make use his marked group. Enjoy.

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Posted by Biondy at 10:39 AM
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10 comments:

Anonymous said...

The push and cut just works, right?

J16 H16
J14 H15 J13
if J12, K12 atari, K13 K12 dead

December 4, 2010 at 12:43 PM
Anonymous said...

how about ... if black answers k12? instead of j12?

December 7, 2010 at 6:40 AM
Anonymous said...

nevermind .. i take that back .

December 7, 2010 at 6:41 AM
DichiGo said...

I think the answer is simple.white has to play at P19 to capture black's group and prevents "SEKI".If white plays at another point,black will play at J16 to make "SEKI".
Did I miss something?

December 9, 2010 at 9:54 AM
Anonymous said...

I missed read about the "SEKI".
It's impossible for White to capture Black's N18 group and prevent the "SEKI" ,except If Black let white capture the N18 group(hehe).
Here I have 2 answers for this tsumego.
1.first white plays at J13,then B J14,W J16,B H16,W H12,B H13,W J12 captures 2 black stones.
2.W Plays J16,B H16,W J13,B J14,W H12,B H13,W J12 captures 2 Black's stones.
My answers are similiar but they have different order.I think the idea is to save W group around O14.That W group seem has only one eye.

December 10, 2010 at 9:21 PM
Hoang Anh said...
This comment has been removed by the author.
December 17, 2010 at 5:58 PM
Hoang Anh said...

@above poster: Black does not have to J14 when White J13. So both your answers are probably not correct.

December 17, 2010 at 5:59 PM
DichiGo said...

Yes, that's true that B must not answer at J14 to respond White J13.Black can play at H13 to respond White J13.And my 2 answers are not correct.If so....,
Here is my other answer:
First White plays at J13,then B H13,W J12, If B responds at J14,then W H12 captures 2 black stones.

But if B responds W J12 at H12, W plays at J14,B K12,W J16,If B answers at J H15,W plays H16 and later can capture 3 B's stones(J17 group)

if B answers W J16 at H16,W H15 captures B's J15 stone.then B H14,W J15 connect.
this way W can capture B's K13 group.
What do you think?

December 18, 2010 at 10:12 PM
Hoang Anh said...

@DichiGo:
After playing your moves out I think the only reply Black has for White J13 is B J12 W K12 B H12 W J14 B H14 W J14 B H16 to create a ko.

December 18, 2010 at 11:00 PM
DichiGo said...

So what is the correct answer?

December 27, 2010 at 9:36 PM

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