Life In 19x19

Posted: **Sat Mar 30, 2013 1:34 pm**

Posted: **Sat Mar 30, 2013 3:02 pm**

Posted: **Mon Apr 01, 2013 2:33 pm**

Joaz Banbeck wrote:
I feel that 32 is premature. The right side is big.

If W were to make a big move on the right, and allow B to fully connect his two weak groups, W could then play another big move on the right. And the B center stones would still not be completely safe.

Posted: **Tue Apr 02, 2013 3:22 am**

Click Here To Show Diagram Code: [go]$$Bc B has captured 1 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . a . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X . . . 3 . . . . . . . . . . . . | $$ | . . . , 1 . . . . , . . . . . , . . . | $$ | . . . . . 2 . . . . . . . . . . . . . | $$ | . . . . . . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

What about :b3:

here? Black keeps playing light, the two stones below feel not important to me (when White captures them he ends up overconcentrated?) and when Black gets 'a', he played on both sides.

Posted: **Tue Apr 02, 2013 5:27 am**

Posted: **Tue Apr 02, 2013 8:22 am**

Click Here To Show Diagram Code: [go]$$Bcm31 B has captured 1 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . , 1 . . . . , . . . . . , . . . | $$ | . . . . 3 2 . . . . . . . . . . . . . | $$ | . . . . . . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

@ Joaz

I contemplated a reduction, but the move I played seemed more fun.

For example,

Click Here To Show Diagram Code: [go]$$Bc reduction $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . 3 . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . 2 , 1 . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

This would have been a traditional sequence, and it looks good for B. So it's not clear to me that W will reply at 2.

Click Here To Show Diagram Code: [go]$$BcB reduction ignored $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . 2 . X . . . 4 . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . a O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . 3 . . . . . . . . . . . . . . . . | $$ | . . . , 1 . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The W move at 2 is huge, so W may reply here immediately. If I now play 3 as in the game, W a is probably smaller that the invasion at 4. This diagram doesn't appeal to me. In the game, W has replied to 2 at a, and not yet got around to protecting the 3-3. So I prefer the game to this.

My move is a probe. I'm not overly attached to my 2 stones, so I'm trying to find the best sacrifice sequence.

Click Here To Show Diagram Code: [go]$$Bc For example... $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . , 1 5 7 . . 9 . . . . . , . . . | $$ | . . . . 3 2 6 8 . . . . . . . . . . . | $$ | . . . . 4 . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

If W replies as in this diagram, 9 is trong for me. For example...

Click Here To Show Diagram Code: [go]$$Bc Continuation $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . . . 6 9 . . . . . . . . . . | $$ | . . X . . . 7 3 4 . . . . . . . . . . | $$ | . . . , X X X 2 5 1 . . . . . , . . . | $$ | . . . . X O O O . . . . . . . . . . . | $$ | . . . . O 8 . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

W needs to connect around 8 eventually, and the fight following 9 looks good for B. B is playing on the outside, and the 3-3 point is still open. (It's particulalrly big in this position since it affects eye shape as well as territoy.)

Posted: **Tue Apr 02, 2013 8:55 am**

Click Here To Show Diagram Code: [go]$$Bcm31 B has captured 1 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . , 1 . . . . , . . . . . , . . . | $$ | . . . . 3 2 . . . . . . . . . . . . . | $$ | . . . . 4 . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Posted: **Tue Apr 02, 2013 9:07 am**

Click Here To Show Diagram Code: [go]$$Bcm31 B has captured 1 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . , 1 5 . . . , . . . . . , . . . | $$ | . . . . 3 2 . . . . . . . . . . . . . | $$ | . . . . 4 . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Posted: **Tue Apr 02, 2013 10:11 am**

Click Here To Show Diagram Code: [go]$$Bcm31 B has captured 1 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X . . . . . . . . . . . . . . . . | $$ | . . . , 1 5 6 . . , . . . . . , . . . | $$ | . . . . 3 2 . . . . . . . . . . . . . | $$ | . . . . 4 . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Posted: **Wed Apr 03, 2013 12:01 pm**

Click Here To Show Diagram Code: [go]$$Bcm31 B has captured 1 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X . . . 7 . . . . . . . . . . . . | $$ | . . . , 1 5 6 . . , . . . . . , . . . | $$ | . . . . 3 2 . . . . . . . . . . . . . | $$ | . . . . 4 . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The move MW played is better than the extension I showed. However, I think the positiion is reaonable for me.

MW has a number of moves. Suppose he connects solidly. One possibility is for me to extend.

Click Here To Show Diagram Code: [go]$$Bc W connects $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . 9 7 . . . . . . . . . . . . . | $$ | . . X 0 8 4 1 3 . . . . . . . . . . . | $$ | . . . , X X O 5 . , . . . . . , . . . | $$ | . . . . X O 2 . . . . . . . . . . . . | $$ | . . . . O 6 . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

It looks like W's cut it troublesome, but in fact I'd welcome it. B 5 eventually forces W to connect at 6. Then the simplest line is for me to give up 3 stones as shown below.

Click Here To Show Diagram Code: [go]$$Bc W connects - continued $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . 6 . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . a . . 5 . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . 3 1 X X . . . . . . . . . . . . . | $$ | . . X O O O X X . . . . . . . . . . . | $$ | . . 4 2 X X O B . , . . . . . , . . . | $$ | . . . . X O O . . . . . . . . . . . . | $$ | . . . . O W . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The exchange of the makrked stone is favoruable for me (if I aplyed the marked balck stone after dumping the 3 stones, it would be gote), and a moyo stategy looks fun here. W's corner is not 100% - it is open at a.

So I don't think MW can possibly play like this, and needs an alernative such as:

Click Here To Show Diagram Code: [go]$$Bc W connects - 2nd line. $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . B . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . B . . . . . . . . . . . . . | $$ | . . X . . . 1 3 . . . . . . . . . . . | $$ | . . . , X X O . . , . . . . . , . . . | $$ | . . . . X O 2 . 4 . . . . . . . . . . | $$ | . . . . O . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The cut was an overplay. So maybe W needs to move out with 4 here. Then I have very slight issue - I want to play both the marked stones.

So, on reflection I don't think I'll play the extension. I think I'll do this immediately:

Click Here To Show Diagram Code: [go]$$Bc W connects $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . 3 . . . . . . . . . . . . . | $$ | . . X . . . 1 . . . . . . . . . . . . | $$ | . . . , X X O . . , . . . . . , . . . | $$ | . . . . X O 2 . . . . . . . . . . . . | $$ | . . . . O . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I think this is OK for me - W wants to answer in centre a lot, so I am very likely to get the 3-3 point. However, 3 in this diagram is not the only move.

Click Here To Show Diagram Code: [go]$$B More to think about $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X . . . 1 . . . . . . . . . . . . | $$ | . . . , X X O B # , . . . . . , . . . | $$ | . . . . X O 2 . . . . . . . . . . . . | $$ | . . . . O . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The makred stones may be possible, so I'll read them out if MW connects.

MW could extend.

Click Here To Show Diagram Code: [go]$$Bc W extends $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . 9 . 7 . . . . . . . . . . . . . . . | $$ | . 0 5 6 . X . . . . . X . . . . . . . | $$ | . . 8 O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . 3 . . . . . . . . . . . . . | $$ | . . X . . . 1 . 4 . . . . . . . . . . | $$ | . . . , X X O 2 . , . . . . . , . . . | $$ | . . . . X O . . . . . . . . . . . . . | $$ | . . . . O . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

If this happens, again there is a a strong case for to play at 3. W 4 is then big - he has very bad aji on the outside, and probably needs a move. This move just about patches things up whilst starting to come into my moyo.

I can then take the 3-3.

Click Here To Show Diagram Code: [go]$$Bc W extends $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . X 1 X . . . . . . . . . . . . . . . | $$ | . O X O . X . 5 . . . X . . . . . . . | $$ | . . O O . 2 3 . . , . . . . . , . . . | $$ | . . . . . 4 . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . B . . . . . . . . . . . . . | $$ | . . X . . . X . O . . . . . . . . . . | $$ | . . . , X X O O . , . . . . . , . . . | $$ | . . . . X O . . . . . . . . . . . . . | $$ | . . . . O . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

W needs to strengthen his corner, so something like the diagram above may happen. Due to my connection at the marked stone, my group on the oustide is reasonably strong so this line seems reasonable for B. I have quite a lot of territory, a bit of moyo, and my two stones still have a lot of aji. MW has less territory and less moyo, so I think I am ahead.

The key point in this line is if MW can attack the group containin my marked stone effectively. So before committing to this, I may do some more reading (and MW may play somewhere different as well.)

Posted: **Wed Apr 03, 2013 12:59 pm**

Click Here To Show Diagram Code: [go]$$Bcm31 B has captured 1 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . X . . . 7 . . . . . . . . . . . . | $$ | . . . , 1 5 6 8 . , . . . . . , . . . | $$ | . . . . 3 2 . . . . . . . . . . . . . | $$ | . . . . 4 . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Posted: **Sat Apr 06, 2013 7:12 am**

Click Here To Show Diagram Code: [go]$$Bcm31 B has captured 1 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . 9 . . . . . . . . . . . . . | $$ | . . X . . . 7 . . . . . . . . . . . . | $$ | . . . , 1 5 6 8 . , . . . . . , . . . | $$ | . . . . 3 2 . . . . . . . . . . . . . | $$ | . . . . 4 . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

It is a complex position. The move I've played may be slack. However, it is good shape and W has bad shape.

More specifically, I don't actually need my move to protect against the cut

Click Here To Show Diagram Code: [go]$$Bc B tenuki $$ --------------------------------------- $$ | 1 . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . 9 7 5 . . . . . . . . . . . . . | $$ | . . X 8 6 2 X . . . . . . . . . . . . | $$ | . . . 0 X X O O . , . . . . . , . . . | $$ | . . . . X O . . . . . . . . . . . . . | $$ | . . . 3 O 4 . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Click Here To Show Diagram Code: [go]$$Bcm11 B tenuki - ladder is good. $$ --------------------------------------- $$ | 1 . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . X X X . . . . . . . . . . . . . | $$ | . . X O O O X . . . . . . . . . . . . | $$ | . 3 2 O X X O O . , . . . . . , . . . | $$ | . . 4 1 X O . . . . . . . . . . . . . | $$ | . . 5 X O O . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

I have a very aji-keshi move which is sufficent to capture the cut.

However, W can peep at move 39 if I don't play there, which gives me bad shape.

I considered pushing:

Click Here To Show Diagram Code: [go]$$Bc B tenuki $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . 6 . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . 5 . . . . . . . . | $$ | . . X . . . X 1 3 . . . . . . . . . . | $$ | . . . . X X O O 2 4 . . . . . , . . . | $$ | . . . . X O . . . . . . . . . . . . . | $$ | . . . . O . . . # . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

However, this hurts my marked stone and W gets sente to protect against the 3-3. With the game move, my continuation in the centre is more severe if W takes the corner. For example, I can consider cutting immediately:

Click Here To Show Diagram Code: [go]$$Bc W overplay? $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . 2 . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . 1 . . . . . . . . . . . . . | $$ | . . X . . . X . d . . . . . . . . . . | $$ | . . . , X X O O . , . . . . . , . . . | $$ | . . . . X O 4 . . . . . . . . . . . . | $$ | . . . . O 3 . b X . . . . . . . . . . | $$ | . . . O . X . 5 7 . . . . . . . . . . | $$ | . . O . O . 6 c O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

5 above threatens to cut W at a, so 6 is necessary. Then 7 protects against b and splits W into 2 groups with a possibility of a further cut at c later. I may also be able to play 7 at d directly.

As I stated before, I now expect W to reply as below, which is just sufficient to prevent to cut from the previous diagram:

Click Here To Show Diagram Code: [go]$$Bc Expected W move $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . 1 . . . . . . . . . . . . . | $$ | . . X . . . X . 2 . . . . . . . . . . | $$ | . . . , X X O O . , 0 . . . . , . . . | $$ | . . . . X O 4 . . 9 a . . . . . . . . | $$ | . . . . O 3 . . X . 8 . . . . . . . . | $$ | . . . O . X . 5 7 . . . . . . . . . . | $$ | . . O . O . 6 . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

My reading is that I collapse after 8 here, so I can't play this way. (It's very close to viable for me, though, and I may have made a mis-reading here. I'm not sure about 9 at a, say.)

So far, everything lines up with my previous diagram. I said then that I intended to go into the 3-3 after W protects at 2:

Click Here To Show Diagram Code: [go]$$Bc 3-3 invasion - previous plan $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . 7 9 5 . . . . . . . . . . . . . . . | $$ | . 8 3 4 . X . . . . . X . . . . . . . | $$ | . . 6 O . 0 . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . 1 . . . . . . . . . . . . . | $$ | . . X . . . X . 2 . . . . . . . . . . | $$ | . . . , X X O O . , . . . . . , . . . | $$ | . . . . X O . . . . . . . . . . . . . | $$ | . . . . O . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

On deeper reading, I found this may actually become slightly uncomfortable to me:

Click Here To Show Diagram Code: [go]$$Bc 3-3 invasion - previous plan $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . 7 9 5 . . . . . . . . . . . . . . . | $$ | . 8 3 4 . X . . . . . X . . . . . . . | $$ | . . 6 O . 0 3 5 . , . . . . . , . . . | $$ | . . . . . . 4 . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . 6 . . 8 . . . . . . . . . | $$ | . . . . . 1 . 7 . . . . . . . . . . . | $$ | . . X . . . X . 2 . . . . . . . . . . | $$ | . . . , X X O O . , . . . . . , . . . | $$ | . . . . X O . . . . . . . . . . . . . | $$ | . . . . O . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

My whole group is weak, and W can expect some profit somewhere by attacking it.

So I am considering 2 apporaches to avoid this line. The first is still to invade, but choose a different line.

Click Here To Show Diagram Code: [go]$$Bc 3-3 invasion - new plan $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . 7 4 8 . . . . . . . . . . . . . . . | $$ | . . 1 2 . X . . . . . X . . . . . . . | $$ | . . 3 O . . . . . , . . . . . , . . . | $$ | . . 5 6 . . . . . . . . . . . . X . . | $$ | . 9 . . a . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . . . X . O . . . . . . . . . . | $$ | . . . , X X O O . , . . . . . , . . . | $$ | . . . . X O . . . . . . . . . . . . . | $$ | . . . . O . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

This way leave me a peep a, and W doesn't get as good an attack on my group.

The second thing I'm considering is to not invade immediately after all:

Click Here To Show Diagram Code: [go]$$Bc Don't invade (heresy!) $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . 4 . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . 3 . . . . . . . . . . | $$ | . . . . . 1 . . . . . . . . . . . . . | $$ | . . X . . . X . 2 . . . . . . . . . . | $$ | . . . , X X O O . , . . . . . , . . . | $$ | . . . . X O 6 . . . . . . . . . . . . | $$ | . . . . O 5 . . X . 0 . . . . . . . . | $$ | . . . O . X . 7 9 . . . . . . . . . . | $$ | . . O . O . 8 . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Click Here To Show Diagram Code: [go]$$Bc Don't invade continutation $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . X . . . . . . . . . . | $$ | . . . . . X . . . . a . . . . . . . . | $$ | . . X . . . X 9 O 4 7 . . . . . . . . | $$ | . . . , X X O O 0 3 2 8 . . . , . . . | $$ | . . . . X O O . . 1 5 6 . . . . . . . | $$ | . . . . O X . . X . O . . . . . . . . | $$ | . . . O . X . X X . . . . . . . . . . | $$ | . . O . O . O . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

There are a number of don't invade move possible. 3 above is one of them. If W protects the corner, I've re-activated the centre cut. I play at a following the moves shown, and I think it's good for me.

If W replies as I expect, with the diagonal move, I'll decide between the 3-3 and the diagram immediately above at that point.

Posted: **Sat Apr 06, 2013 7:31 am**

Click Here To Show Diagram Code: [go]$$Bcm31 B has captured 1 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . . . . . . . . . . . . | $$ | . . . . . 9 . . . . . . . . . . . . . | $$ | . . X . . . 7 . 0 . . . . . . . . . . | $$ | . . . , 1 5 6 8 . , . . . . . , . . . | $$ | . . . . 3 2 . . . . . . . . . . . . . | $$ | . . . . 4 . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Posted: **Sat Apr 06, 2013 4:24 pm**

@Drmwc: Is that you playing with the whale shark?

Posted: **Sun Apr 07, 2013 4:11 am**

I took the photo. It was this time last year, at Roca Partida in the Pacific, off the cost of Mexico. It's the only whale shark I've seen on a dive, and it was awesome. (It's the closest I've come to drowning - I ended the dvie at around 0.0 bar because I didn't want it to end.)

The guy in the picture is probably our divemaster, Dani. He saved a whale shark from fishing gear earlier this year (starts at around 4.20):

Click Here To Show Diagram Code: [go]$$Bcm41 B has captured 1 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . X . . . . . X . . . . . . . | $$ | . . . O . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . O O . . . . 1 . . . . . . . . . . | $$ | . . . . . X . . . . . . . . . . . . . | $$ | . . X . . . X . O . . . . . . . . . . | $$ | . . . , X X O O . , . . . . . , . . . | $$ | . . . . X O . . . . . . . . . . . . . | $$ | . . . . O . . . X . . . . . . . . . . | $$ | . . . O . X . . . . . . . . . . . . . | $$ | . . O . O . . . O . O . . . . . . . . | $$ | . . . X O . O . . . . . . . . . . . . | $$ | . . O O X X . . O , X . . . . , . . . | $$ | . . O X . X . . . . . . . . X . . . . | $$ | . . X . X . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Life In 19x19

magicwand versus drmwc

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