Life In 19x19

Posted: **Wed Jan 02, 2013 5:55 pm**

This position came up in a recent game (didn't progress beyond this point) and I was wondering if the double hane at 7 is an overplay. Kogo's says 4 is a mistake, but doesn't have any variations like this.

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

Posted: **Wed Jan 02, 2013 7:15 pm**

Double hane feels fine, though the simple extension is already a good result.

Click Here To Show Diagram Code: [go]$$c $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . 7 9 . . . | $$ | . . . . . . . . . . . . . . 6 1 8 0 . | $$ | . . . , . . . . . , . . . . . 4 5 . . | $$ | . . . . . . . . . . . . . . . 2 3 . . | $$ | . . . . . . . . . . . . . . . a . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Posted: **Wed Jan 02, 2013 7:18 pm**

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

This is the usual continuation.

is the right move almost unconditionally. The spacing of

can change.

Click Here To Show Diagram Code: [go]$$c $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . b 7 8 . . . | $$ | . . . . . . . . . . . . . 0 6 1 9 . . | $$ | . . . , . . . . . , . . . . . 4 5 . . | $$ | . . . . . . . . . . . . . . . 2 3 . . | $$ | . . . . . . . . . . . . . . . a . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

If you must go through to

in this case I think the right shape is made with

and

here. The reason this is bad is because of the opening at a that Black can exploit. I didn't read much ahead, but because of that I think a Black play at B and onwards would put White in a world of pain.

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

This is the likely continuation. White has a serious defect at a which Black will most definitely exploit. In fact, I think playing at a instead of

would be much better. I still prefer Black in this situation, partly because he has sente. Of course, b is a big point in the endgame.

Just my thoughts. I'd love to be corrected if stronger players find problems with my variations.

Posted: **Wed Jan 02, 2013 7:31 pm**

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

This is an interesting line. It seems at the end a and b are miai for Black. The point c looks like a nice tesuji too whith ends up capturing the marked stones at the expense of

. Of course, that would make d Black's sente at any time.

Just an idea.

Posted: **Wed Jan 02, 2013 8:01 pm**

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

Posted: **Wed Jan 02, 2013 8:05 pm**

Shaddy wrote:

*Facepalm*

Of course.

does the trick nicely.

Actually

isn't even necessary.

Now I feel my whole line is wrong somehow. At any rate White should play

at

to begin with, if anything.

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