Life In 19x19

Posted: **Wed Aug 15, 2012 10:39 am**

SpongeBob wrote:I would say this is a definite recommendation for everyone interested in the san-ren-sai (playing with or against it).

Just for future info, it's sanrensei and not sanrensai.

Does Redmond make any comment why it's played so rarely now?

Posted: **Wed Aug 15, 2012 11:13 am**

Posted: **Wed Aug 15, 2012 1:42 pm**

Araban wrote:

I'm not sure I get it? I looked up in smartgo for black playing sanrensei from that formation and came away with 187 games and about 48% win ration. There's not too much I can take from that.

Posted: **Wed Aug 15, 2012 3:22 pm**

Araban wrote:

Oh, I remember this on Gameboy!

Posted: **Wed Aug 15, 2012 9:45 pm**

Araban wrote:

shoudn't they all be sai?
sanrensai = three sai's in a row?

Posted: **Wed Aug 15, 2012 10:08 pm**

how about this?

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

Not bent 4 because w has plenty of liberties

Posted: **Wed Aug 15, 2012 10:16 pm**

So there's a fun problem here, what about this one?

Click Here To Show Diagram Code: [go]$$W $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . B . . . | $$ | . . . . . . . . . . . . . . X O O . . | $$ | . . . . . X . X . X X X . O . X O . . | $$ | . . . O . . . . O O O X X X . X . O . | $$ | . . . . . . O . . . . O X O . . . . . | $$ | . . . . . . . . . . . O O . . X . X . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . |[/go]

EDIT: The nice thing about these sequences is that the only way they care what happens on the outside is if black gets a stone in one of the marked positions, so it leaves considerably less aji

Click Here To Show Diagram Code: [go]$$W $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X O O . . | $$ | . . . . . X . X . X X X . O . X O . . | $$ | . . . O . . . . O O O X X X . X a O . | $$ | . . . . . . O . . . . O X O . . a a a | $$ | . . . . . . . . . . . O O . . X . X a | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . |[/go]

Posted: **Thu Aug 16, 2012 9:52 pm**

shapenaji wrote:So there's a fun problem here, what about this one?

OK, I'll give it a try.

First, it appears to me that this just dies if there is no way to take advantage of some outside weakness, since it's pretty much like white has an L+1 group and black has played a hane which kills it. So I'm looking at how to use black's weaknesses.

Click Here To Show Diagram Code: [go]$$W Black's moves are mostly forced here $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . B . . . | $$ | . . . . . . . . . . . . . . X O O 1 3 | $$ | . . . . . X . X . X X X . O . X O . 2 | $$ | . . . O . . . . O O O X X X . X . O 4 | $$ | . . . . . . O . . . . O X O . . . 5 6 | $$ | . . . . . . . . . . . O O . . X 7 X . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . |[/go]

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

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

Posted: **Thu Aug 16, 2012 9:57 pm**

Eric:

EDIT:

Posted: **Fri Aug 17, 2012 12:01 pm**

Attempt #2

I still don't see any way to live internally. So maybe I can rely on aji at the top instead of the right:

Click Here To Show Diagram Code: [go]$$W White lives $$ --------------------------------------- $$ | . . . . . . . . . . . . . . 6 B 4 2 5 | $$ | . . . . . . . . . . . . . . X O O 3 1 | $$ | . . . . . X . X . X X X . O 7 X O . . | $$ | . . . O . . . . O O O X X X . X . O . | $$ | . . . . . . O . . . . O X O . . . . . | $$ | . . . . . . . . . . . O O . . X . X . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . |[/go]

This seems to capture the top black group, so white lives. I suppose black should not play B4, and instead let white live by playing there.

If black gets one of the points mentioned by shapenaji, he can either destroy the other eye:

Click Here To Show Diagram Code: [go]$$W White dies $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . B . 2 . | $$ | . . . . . . . . . . . . . . X O O 3 1 | $$ | . . . . . X . X . X X X . O . X O . 5 | $$ | . . . O . . . . O O O X X X . X 6 O 4 | $$ | . . . . . . O . . . . O X O . . . . B | $$ | . . . . . . . . . . . O O . . X . X . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . |[/go]

or capture white due to a shortage of liberties:

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

Click Here To Show Diagram Code: [go]$$W White dies $$ --------------------------------------- $$ | . . . . . . . . . . . . . . 2 B X X 1 | $$ | . . . . . . . . . . . . . . X O O O O | $$ | . . . . . X . X . X X X . O 3 X O . O | $$ | . . . O . . . . O O O X X X . X O O X | $$ | . . . . . . O . . . . O X O . . 4 B X | $$ | . . . . . . . . . . . O O . . X . X . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . |[/go]

Nice problem, thanks!

Posted: **Wed Oct 15, 2014 3:02 am**

great to see all the posts and San-RenSei lovers/haters here :-)

Over last three months I have played more than 300 San-RenSei games as I like to study this style playing for influnece more in details. - And its a good start for beginners (as I did end of January this year on KGS).

If you are looking for a central source about San-RenSei, pls visit my own thread/blog being public here: http://bit.ly/sanrensei .

I just have started to build a first and small SGF collection of my own SanRenSei games you can have a look at if you like: http://bit.ly/mysanrenseigames .

-

PS: The website sanrensei.info which is named in the li19x19 forum different times, is down, unluckily. Two days ago I have contacted Alexandre Dinerchtein (Russian GO Pro Dan) who is the owner of this site to inform him about. Hopefully he will bring back the site soon.

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