Kirby's Study Journal

Kirby · Post by **Kirby** » Tue Sep 05, 2017 10:13 pm

My biggest question from the game above is this move:

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

White is weak, and black has potential to make a lot of points on the right. Doesn't this kind of move allow for white to make something happen?

I'd prefer to just do something simple like this:

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

Is that so bad?

Or perhaps it's that white won't answer the peep?

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

Something like this?

Or this?

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

Anyway, my feeling is to just make moves that reinforce the right side - not touch white stones like that. In the game, white reduced the white side a lot.

Maybe it was inevitable?

skydyr · Post by **skydyr** » Wed Sep 06, 2017 8:59 am

Kirby wrote:Here's the continuation of a pro game I started to go through a few days ago.
...

Regarding

vs. F3, if you were white, would you follow up with a move on the bottom for

? If not immediately, how urgent do you think it is?

Kirby · Post by **Kirby** » Wed Sep 06, 2017 9:49 am

After O3, I think it's less urgent. I like the mini-Chinese opening as black, so that's why I favor the approach.

Kirby · Post by **Kirby** » Wed Sep 06, 2017 9:03 pm

Played my first comeback game in the AYD today.

Here's the game record:

My biggest confusion points were decisions on what to do around these areas:

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

Black to play (above).

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

Black to play (above).

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

Black to play (above).

It was nice to play in the AYD, again.

Kirby · Post by **Kirby** » Wed Sep 06, 2017 10:07 pm

Started flipping through another pro game today, because... Why not? I'm in a good mood.

I went through the first few moves tonight. I'll continue later, like I did last time. For this one, I just tried to play the next move. You can see the variations where I got the next move wrong.

Some key differences of idea:

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

My thought is to play something locally, for example, the marked move. Black realized that it was enough for him to get out with his group, and went on to invade the left side:

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

So I need to keep my eye on the big picture instead of continuing locally all the time.

And here:

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

My inclination was to invade:

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

Probably unreasonable. So it makes sense that white played a move to reduce the bottom, while simultaneously strengthening his group:

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

And here:

Click Here To Show Diagram Code: [go]$$Bc $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . O X . . . . . . . . X . . . . | $$ | . . . O . X . . O , . O . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . X . O . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . X . X . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . X . . | $$ | . . . , . . . . . , . . . . . , . . . | $$ | . . X . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . X . . | $$ | . . X X . . . . . . . . O . . . . . . | $$ | . . O . . . . . . . . . . . O O O . . | $$ | . . . O . O . . . , . . . X . X X . . | $$ | . . . . . . . X . . . . . . X . . . . | $$ | . . . . . O . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------;------------------------[/go]

My inclination is to play here:

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

But he played here:

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

I don't know why his move is better. Maybe because of the aji?

Note that I refer to aji when I can't really read a clear variation of why a particular side is better

Anyway, those three positions are probably enough for me to digest for right now. I'll take it easy for now.

Shaddy · Post by **Shaddy** » Thu Sep 07, 2017 6:11 am

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

Kirby · Post by **Kirby** » Thu Sep 07, 2017 9:41 am

I actually thought about this move, but it wasn't clear cut to me. This is what's I read yesterday, and I didn't think white could link up:

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

That's still has aji, but maybe my this too:

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

Either way, I guess there's I still aji.

Kirby · Post by **Kirby** » Thu Sep 07, 2017 10:46 pm

Bitter loss. Maybe this will teach me to be more careful.

I played too casually.

Some general comments (also in SGF):
I should have seriously considered tenuki on the top. I didn't try to read it at all, but I think I can live, looking at it now.

At least I should have read it during the game.

R8 was crude.

Finally, I think that I should have just lived in the middle instead of being fancy. That would have resulted in a win for me, I think.

Kirby · Post by **Kirby** » Tue Sep 12, 2017 10:16 pm

I felt bad about losing last week, so I didn't play a lot of games. I played one in the AYD today, though.

I lost the game, but "won" it, because my opponent didn't realize that he was winning and resigned. I had a big lead at the beginning, but I was good at giving it away.

Here's my review, combined with comments from Inseong:

Inseong outlined a general comment about his opinion of my current style:
1.) My greatest strength is that I can make the game complicated and, sometimes, turn it to my benefit.
2.) My greatest weakness is that I don't yield. I could just negotiate and give the opponent something, but I don't do that.

I have been focusing, particularly in this game, on playing passively in my opponent's advantaged area, and playing aggressively in my own. However, in this game, time was short, and I had a very difficult time evaluating whether white or black was ahead. So how can I yield or negotiate when I don't know that it'll result in a position where I'm ahead?

Inseong didn't say so, but I suspect that one of the roots of my problem is my inability to evaluate that well. If I seem to be 20 or 40 points ahead, evaluation is simpler, but if it gets closer, I tend to play aggressively everywhere, and not yield, as he says.

It's my interpretation of his advice, anyway.

I guess I need to practice counting. It's hard to do during byo-yomi, etc.

Kirby · Post by **Kirby** » Tue Sep 12, 2017 10:19 pm

Another note about the game, above.

A particularly interesting example of where I had difficulty evaluating was here:

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

After black's marked move, I must decide whether to just capture the corner and let black play another move in the center, or to endure in the center, and let the ko go on, giving white the chance to capture.

I opted to fight in the center:

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

I should have asked Inseong about this, but at least some variations I played out showed that just capturing in the corner gave me solid points, and I could reduce black's center enough to have enough points.

Not really sure.

These types of scenarios are difficult for me to assess, and seem much trickier than localized problems.

Shaddy · Post by **Shaddy** » Thu Sep 14, 2017 6:23 am

It looks to me like there's some aji if Black plays 91 at H1?

Bill Spight · Post by **Bill Spight** » Thu Sep 14, 2017 8:14 am

Kirby wrote:Another note about the game, above.

A particularly interesting example of where I had difficulty evaluating was here:
$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . O . O . . . |
$$ | . . . . . . . . . . . . . X O . O O . |
$$ | . . . . . X . . . . B X X O O O X X . |
$$ | . . . O . . . . . , . O O X O X O . . |
$$ | . . . . . . . . . . . . X X O X O . . |
$$ | . . . O . . . . . . . . . O X X O . O |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . . . . . . . . . . . . . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . . X . . . . . . . . . . . . . . |
$$ | . O O O X X X X . . . . . . . . . . . |
$$ | O . . O O O O O X X . . . . . . . . . |
$$ | . O O O X X X X . X O . X X X O X X . |
$$ | O O X X O O O X X X O X X O X X O O O |
$$ | . O X X O X X X O O X X O O O O O . O |
$$ | O X X O O O X O O X X O O O X O O X O |
$$ | . O X X O O O . O X O O X X X O X . X |
$$ | O O . X X X . O O X O . O X . X X X X |
$$ ---------------------------------------
Click Here To Show Diagram Code
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . . . . . . . O . O . . . | $$ | . . . . . . . . . . . . . X O . O O . | $$ | . . . . . X . . . . B X X O O O X X . | $$ | . . . O . . . . . , . O O X O X O . . | $$ | . . . . . . . . . . . . X X O X O . . | $$ | . . . O . . . . . . . . . O X X O . O | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . . . . . . . . . . . . . . X . X . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . X . . . | $$ | . . . . X . . . . . . . . . . . . . . | $$ | . O O O X X X X . . . . . . . . . . . | $$ | O . . O O O O O X X . . . . . . . . . | $$ | . O O O X X X X . X O . X X X O X X . | $$ | O O X X O O O X X X O X X O X X O O O | $$ | . O X X O X X X O O X X O O O O O . O | $$ | O X X O O O X O O X X O O O X O O X O | $$ | . O X X O O O . O X O O X X X O X . X | $$ | O O . X X X . O O X O . O X . X X X X | $$ ---------------------------------------[/go]

I don't think that this is an easy position to assess.

After black's marked move, I must decide whether to just capture the corner and let black play another move in the center, or to endure in the center, and let the ko go on, giving white the chance to capture.

I opted to fight in the center:
$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . O . O . . . |
$$ | . . . . . . . . . . . . . X O . O O . |
$$ | . . . . . X . . . . X X X O O O X X . |
$$ | . . . O . . . . . , . O O X O X O . . |
$$ | . . . . . . . . . . . . X X O X O . . |
$$ | . . . O . . . . . . . . . O X X O . O |
$$ | . . . . . . . . . . . . . W . . X O . |
$$ | . . . . . . . . . . . . . . . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . . X . . . . . . . . . . . . . . |
$$ | . O O O X X X X . . . . . . . . . . . |
$$ | O . . O O O O O X X . . . . . . . . . |
$$ | . O O O X X X X . X O . X X X O X X . |
$$ | O O X X O O O X X X O X X O X X O O O |
$$ | . O X X O X X X O O X X O O O O O . O |
$$ | O X X O O O X O O X X O O O X O O X O |
$$ | . O X X O O O . O X O O X X X O X . X |
$$ | O O . X X X . O O X O . O X . X X X X |
$$ ---------------------------------------
Click Here To Show Diagram Code
[go]$$Bc $$ --------------------------------------- $$ | . . . . . . . . . . . . . O . O . . . | $$ | . . . . . . . . . . . . . X O . O O . | $$ | . . . . . X . . . . X X X O O O X X . | $$ | . . . O . . . . . , . O O X O X O . . | $$ | . . . . . . . . . . . . X X O X O . . | $$ | . . . O . . . . . . . . . O X X O . O | $$ | . . . . . . . . . . . . . W . . X O . | $$ | . . . . . . . . . . . . . . . X . X . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . X . . . | $$ | . . . . X . . . . . . . . . . . . . . | $$ | . O O O X X X X . . . . . . . . . . . | $$ | O . . O O O O O X X . . . . . . . . . | $$ | . O O O X X X X . X O . X X X O X X . | $$ | O O X X O O O X X X O X X O X X O O O | $$ | . O X X O X X X O O X X O O O O O . O | $$ | O X X O O O X O O X X O O O X O O X O | $$ | . O X X O O O . O X O O X X X O X . X | $$ | O O . X X X . O O X O . O X . X X X X | $$ ---------------------------------------[/go]
I should have asked Inseong about this, but at least some variations I played out showed that just capturing in the corner gave me solid points, and I could reduce black's center enough to have enough points.

Not really sure.

These types of scenarios are difficult for me to assess, and seem much trickier than localized problems.

You can certainly make a good case for winning the ko. Let me bring up some things to consider.

Click Here To Show Diagram Code: [go]$$Wc $$ --------------------------------------- $$ | . . . . . . . . . . . . . O . O . . . | $$ | . . . . . . . . . . . . . X O . O O . | $$ | . . . . . X . . . . X X X O O O X X . | $$ | . . . O . . . . . , . O O X O X O . . | $$ | . . . . . . . . . . . . X X O X O . . | $$ | . . . O . . . . . . . . . O X X O . O | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . . . . . . . . . . . . . . X . X . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . X . . . | $$ | . . . . X . . . . . . . . . . . . . . | $$ | . O O O X X X X . . . . . . . . . . . | $$ | O . . O O O O O X X . . . . . . . . . | $$ | . O O O X X X X . X O . X X X O X X a | $$ | O O B B O O O X X X O X X O X X O O O | $$ | . O B B O X X X O O X X O O O O O C O | $$ | O B B O O O X O O X X O O O B O O B O | $$ | . O B B O O O C O X O O B B B O B C B | $$ | O O C B B B C O O X O C O B 1 B B B B | $$ ---------------------------------------[/go]

If

wins the ko, which is an approach ko, White gets 45 points in the marked area -- if I have counted correctly --, and later White has a 7 pt. sente at "a", if not something better. So let's count 52 pts. for White here.

Now consider the ko fight, looking at the bottom part of the board.

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

elsewhere,

at

,

at 1,

elsewhere

is a huge ko threat, threatening a swing of 64 pts. White has nothing close to it. We may consider Black to be komaster of this ko. I reckon Black to have 26 pts. in the area under consideration. That is a swing of 78 pts. in 4 moves, or 19.5 pts. per move. As against that, White gets 2 moves elsewhere and sente at the end. It is not easy to evaluate those moves, but the question is not just a single play,

winning the ko, that gains 19.5 pts., but giving Black 3 moves that gain a total of 58.5 pts. Remember, the opening moves gain only around 14 pts. Arguably, your move gains more than 19.5 pts. But White needs other moves to gain a lot, as well. The case for just winning the ko looks pretty good.

Note: At first blush,

at 6 looks good, but

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

at

prevents Black from simply capturing the enclosed White group. There is a ko for seki.

Kirby · Post by **Kirby** » Thu Sep 14, 2017 6:36 pm

Shaddy wrote:It looks to me like there's some aji if Black plays 91 at H1?

Good point! I pruned this branch pretty quickly during my reading with the following assessment:

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

I didn't think much more, because it seemed I'd get two eyes in my mind. But reading further, it looks like a problem, doesn't it?

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

!!

Kirby · Post by **Kirby** » Thu Sep 14, 2017 6:52 pm

This one is a little less clear to me, but I certainly didn't read it out during the game (or not, yet, frankly):

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

Some thoughts:

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

Click Here To Show Diagram Code: [go]$$Bcm11 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O O . | $$ | . . . . . X . . . . . X X O O O X X . | $$ | . . . O . . . . . , . . O X O X O . . | $$ | . . . . . . . . . . . . X X O X O . . | $$ | . . . O . . . . . . . . . O X X O . O | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . . . . . . . . . . . . . . X . X . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . X . . . | $$ | . . . . X . . . . . . . . . . . . . . | $$ | . O O O X . . X . . . . . . . . . . . | $$ | . X X X O O O . . . . . . . . . . . . | $$ | . O O O X X X X . . . . . . . . . . . | $$ | . O X X O O O X X X O . . . . . . . . | $$ | . O X X O X X X O O X X . . . O X . . | $$ | . 4 X O O O X O O C 2 3 . . . . O . . | $$ | . O X X O O O O O O 1 . . . . . . . . | $$ | . . X X X X X X O . . . . . . . . . . | $$ ---------------------------------------[/go]

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

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

Certainly there's aji. I don't see it yet, though.

Kirby · Post by **Kirby** » Thu Sep 14, 2017 7:09 pm

Bill Spight wrote:
You can certainly make a good case for winning the ko. Let me bring up some things to consider.

$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . O . O . . . |
$$ | . . . . . . . . . . . . . X O . O O . |
$$ | . . . . . X . . . . X X X O O O X X . |
$$ | . . . O . . . . . , . O O X O X O . . |
$$ | . . . . . . . . . . . . X X O X O . . |
$$ | . . . O . . . . . . . . . O X X O . O |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . . . . . . . . . . . . . . X . X . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . . X . . . . . . . . . . . . . . |
$$ | . O O O X X X X . . . . . . . . . . . |
$$ | O . . O O O O O X X . . . . . . . . . |
$$ | . O O O X X X X . X O . X X X O X X a |
$$ | O O B B O O O X X X O X X O X X O O O |
$$ | . O B B O X X X O O X X O O O O O C O |
$$ | O B B O O O X O O X X O O O B O O B O |
$$ | . O B B O O O C O X O O B B B O B C B |
$$ | O O C B B B C O O X O C O B 1 B B B B |
$$ ---------------------------------------
Click Here To Show Diagram Code
[go]$$Wc $$ --------------------------------------- $$ | . . . . . . . . . . . . . O . O . . . | $$ | . . . . . . . . . . . . . X O . O O . | $$ | . . . . . X . . . . X X X O O O X X . | $$ | . . . O . . . . . , . O O X O X O . . | $$ | . . . . . . . . . . . . X X O X O . . | $$ | . . . O . . . . . . . . . O X X O . O | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . . . . . . . . . . . . . . X . X . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . , . . . . . , . . . . . X . . . | $$ | . . . . X . . . . . . . . . . . . . . | $$ | . O O O X X X X . . . . . . . . . . . | $$ | O . . O O O O O X X . . . . . . . . . | $$ | . O O O X X X X . X O . X X X O X X a | $$ | O O B B O O O X X X O X X O X X O O O | $$ | . O B B O X X X O O X X O O O O O C O | $$ | O B B O O O X O O X X O O O B O O B O | $$ | . O B B O O O C O X O O B B B O B C B | $$ | O O C B B B C O O X O C O B 1 B B B B | $$ ---------------------------------------[/go]
If wins the ko, which is an approach ko, White gets 45 points in the marked area -- if I have counted correctly --, and later White has a 7 pt. sente at "a", if not something better. So let's count 52 pts. for White here.

I pretty much follow, but I don't understand the count. There are 23 captured black stones, which would be 46 points for the captures, plus any empty intersections, right? Or maybe it's a different area that you're counting.

Either way, it sounds like capturing the ko was a viable option - but I had no idea about calculating points per move, etc.

It was pretty much based on emotion/feeling

Life In 19x19

Kirby's Study Journal

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Re: Kirby's Study Journal