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Kirby's Study Journal

https://lifein19x19.com/viewtopic.php?t=8493

Page 122 of 128

Re: Kirby's Study Journal

Posted: Wed Feb 09, 2022 3:05 pm
by Kirby
Trying to keep up with playing games, so I fired up the ol' VM, and started up Tygem. I haven't played on Tygem in ages - my last game is from July 2019. I'm 4d there, so I played a game.

Here it is:



Looking at the very big picture, of course, I was too aggressive and tried to kill his group... And died. Somehow, I was redeemed near the end when he messed up a capturing race.

Re: Kirby's Study Journal

Posted: Wed Feb 09, 2022 3:08 pm
by Kirby
Some highlights...

Here, I should have read things out more carefully before switching to, "Imma gonna kill you" mode.
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O X O . . . . . . . . . . . X O X . |
$$ | . O X O . . . . . , . X . X . X X O . |
$$ | . X O O . . . . . . . . . . X . X O . |
$$ | X . X . . . . . . . . . O O O O O O . |
$$ | . X . . . . . . . . . B . X O . O X . |
$$ | . . . . . . . . . . . . . X O O X X . |
$$ | . . . . . . . . . . . . . X X O O X . |
$$ | . . . , . . . . . , . . . . . X X X . |
$$ | . . . . . . . . . . . . . . . . . O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . O O O O O . . |
$$ | . . . O . X . . . , . . X X . X . . . |
$$ | . . . . O X . . . X . . . . . X . O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Whether or not this move works, I did not read out the obvious danger of his counter attack. His moves weren't that surprising, but just a few moves later, I was feeling like I was in trouble. It means I didn't think about it much.

Actually, I'm going to stop there for my own highlights... I think the moral here is: look twice before crossing the road. I need to take attacks seriously, and consider my weaknesses before I switch on an attack.

Re: Kirby's Study Journal

Posted: Wed Feb 09, 2022 3:21 pm
by Kirby
Looked at the game with an AI.

Some points..

Here, AI wants to just descend, and says I lost a lot by my choice:
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . O . . . . . , . X . X . X . . . |
$$ | . . . . . . . . . . . . . . . . X B . |
$$ | . . . . . . . . . . . . O . . O O . . |
$$ | . . . . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . X O . . . . |
$$ | . . . . . . . . . . . . . X X O O . . |
$$ | . . . , . . . . . , . . . . . X X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . O O . O . . |
$$ | . . . O . X . . . , . . X X . , . . . |
$$ | . . . . O X . . . X . . . . . X . O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Furthermore, after white lives in the top right, AI is more interested in the top left corner... Doesn't really care about attacking the black group immediately. I suppose the takeaway is that it's valuable to keep black weak like that, even if there's not an immediate attack.

I wonder if I can tie the two learnings together:
* Instead of going ALL OUT for an attack, it's good enough to put out reasonable force.
* This may be necessary in times where I am weak.

Re: Kirby's Study Journal

Posted: Thu Feb 10, 2022 6:15 am
by dust
Kirby wrote: I wonder if I can tie the two learnings together:
* Instead of going ALL OUT for an attack, it's good enough to put out reasonable force.
* This may be necessary in times where I am weak.
I think that may be too rigid a learning, especially the first point.

The problem is that sometimes you do need to go ALL OUT - the position demands it. Sometimes it won't be enough to hold back with 'reasonable force'.

Re: Kirby's Study Journal

Posted: Thu Feb 10, 2022 6:19 am
by Kirby
I agree with you, but I think I am a bit blind to my own weaknesses in a given position, so that makes part needs extra attention.

Re: Kirby's Study Journal

Posted: Fri Feb 11, 2022 8:28 am
by dhu163
Can I ask why Kirby's post above is in my "view your posts" list, which normally only consists of my own posts?

Is this an ad, virus, accident, or UFO?

edit: Ah, I probably misunderstood, and any thread I've commented on shows up if updated. Apologies.

Re: Kirby's Study Journal

Posted: Fri Feb 11, 2022 2:23 pm
by Kirby
Played another game on Tygem. Got paired against 5d.

I was black:

Re: Kirby's Study Journal

Posted: Fri Feb 11, 2022 2:28 pm
by Kirby
Highlights:
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . X X X O . . . . . . X . . X . . |
$$ | . X X O O O O . . , . . . . . X . O . |
$$ | . O O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O X . X . . . . . . . . . . . . |
$$ | . . . B X . . . . . . . . . . . O . . |
$$ | . . O , . . O . . , . . . . . , . . . |
$$ | . . . . O . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O . . . . . . . X . . . . X . . |
$$ | . . O . . O . . . . . . . O . . . . . |
$$ | . . . O . . . X . X O O . . . X . . . |
$$ | . . X X . X . . . X X O . O . X . . . |
$$ | . . . . . . . . . X O . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
I think the marked move, above, misses the point. I should just jump out:
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . X X X O . . . . . . X . . X . . |
$$ | . X X O O O O . . , . . . . . X . O . |
$$ | . O O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O X . X . B . . . . . . . . . . |
$$ | . . . . X . . . . . . . . . . . O . . |
$$ | . . O , . . O . . , . . . . . , . . . |
$$ | . . . . O . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O . . . . . . . X . . . . X . . |
$$ | . . O . . O . . . . . . . O . . . . . |
$$ | . . . O . . . X . X O O . . . X . . . |
$$ | . . X X . X . . . X X O . O . X . . . |
$$ | . . . . . . . . . X O . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
---
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . X X X O . . . . . . X . . X . . |
$$ | . X X O O O O . . , . . . . . X . O . |
$$ | . O O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O X . X . X . . . . . . . . . . |
$$ | . O X X X . . . . . . . . . . . O . . |
$$ | . . O , . . O . O , . . . . . , . . . |
$$ | . . O X O . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O . . . B . . . X . . . . X . . |
$$ | . . O . . O . . . . . . . O . . . . . |
$$ | . . . O . . . X . X O O . . . X . . . |
$$ | . . X X . X . . . X X O . O . X . . . |
$$ | . . . . . . . . . X O . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
The move above is useful, but maybe not as big as jumping:
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . X X X O . . . . . . X . . X . . |
$$ | . X X O O O O . . , . . . . . X . O . |
$$ | . O O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O O X . X . X . B . . . . . . . . |
$$ | . O X X X . . . . . . . . . . . O . . |
$$ | . . O , . . O . O , . . . . . , . . . |
$$ | . . O X O . . . . . . . . . . . X . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O . . . . . . . X . . . . X . . |
$$ | . . O . . O . . . . . . . O . . . . . |
$$ | . . . O . . . X . X O O . . . X . . . |
$$ | . . X X . X . . . X X O . O . X . . . |
$$ | . . . . . . . . . X O . . . O . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
---
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . O . . O . . O X . . . . . |
$$ | . . . X X X O . . . . O . X . . X X . |
$$ | X X X O O O O . . X . . . . . X . O . |
$$ | X O O . . . . . . . . X X . . . . . . |
$$ | O . . . . . . . O . X O . . . . O . . |
$$ | . O . . . . . O . X X O . . . . . . . |
$$ | . . O O X . X X X X O . O . . . . . . |
$$ | . O X X X . . . . O O O X . . . O . . |
$$ | . . O , . . O . O , . . . . . , . . . |
$$ | . . O X O . . . . . . . . . O O X . . |
$$ | . . O . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X O . . . X . . O X . . . . X . . |
$$ | . . O . . O . . . . B . . O . . . . . |
$$ | . X . O . . . X . X O O . . . X . . . |
$$ | . . X X . X . . . X X O . O . X . . . |
$$ | . . . . . . . . . X O . . . O X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
The move above was risky - I didn't read it all out, and if I get captured, I lose points, Counting the board, I think it may not be necessary.

Takeaway: Analyze carefully before taking big risk.

Re: Kirby's Study Journal

Posted: Wed Feb 16, 2022 8:42 am
by Kirby
I played a game in the AYD, yesterday. He outplayed me, but I think I focused well.

Here is the game:

Re: Kirby's Study Journal

Posted: Wed Feb 16, 2022 8:45 am
by Kirby
Highlights...

Position 1

Here, I think I missed the most urgent area:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X . O . . |
$$ | . O X . . . . . . . . O . O X O . O . |
$$ | . O X O . . . . . X . X O X X X O . . |
$$ | . O X O . . . . . X . X O O . X O . . |
$$ | . X O O . . . . . . . O . . . X O X . |
$$ | X . X . . . . . . O . . . . . X X O . |
$$ | . X . . . . . . . . . O . O X X O . . |
$$ | . . . . . . . . . . . . . . X O . O . |
$$ | . . . . . . . . . . . . X . X O . O . |
$$ | . X . , . . . . . , . . . . O X X . . |
$$ | . . . O O O . O . . . . . . B . . . . |
$$ | . . X X X O . . . . . . . . . . . . . |
$$ | . O . . X X O O X . . . . . . . . . . |
$$ | . X X . . O X X O O . . . . . . . . . |
$$ | X O X X . X . . X O . . . . . . . . . |
$$ | . O O O O O X . . , . . . . . , X . . |
$$ | . O . O X O X . . . . . . X . . . . . |
$$ | O X X O X X . X . . . . . . . . . . . |
$$ | . O O . O . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Instead, I think I should help the weaker stones:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X . O . . |
$$ | . O X . . . . . . . . O . O X O . O . |
$$ | . O X O . . . . . X . X O X X X O . . |
$$ | . O X O . . . . . X . X O O . X O . . |
$$ | . X O O . . . . . . . O . . . X O X . |
$$ | X . X . . . . . . O . . . . . X X O . |
$$ | . X . . . . . . . . . O . O X X O . . |
$$ | . . . . . . . . . . . . . . X O . O . |
$$ | . . . . . . . . . . . . X . X O . O . |
$$ | . X . , . . . . . , . . . . O X X . . |
$$ | . . . O O O . O . . . . . . X . . . . |
$$ | . . X X X O . . . . . . . . . . . . . |
$$ | . O . . X X O O X . . . . . . . . . . |
$$ | . X X . . O X X O O . . . . . . . . . |
$$ | X O X X . X . . X O . . . . . . . . . |
$$ | . O O O O O X . . , . . . . . , X . . |
$$ | . O . O X O X . . . . . . X . . . . . |
$$ | O X X O X X . X . . . . . . . . . . . |
$$ | . O O . O . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Position 2
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O X . . . . . . . . . . . . . . . . |
$$ | . O X O . . . . . . . . . . . X O . . |
$$ | . O X O . . . . . X . . . . . X O . . |
$$ | . X O O . . . . . . . . . . . X . . . |
$$ | X . X . . . . . . . . . . . . . X O . |
$$ | . X . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . X O . O . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . W . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . , O . . . . , . . . . . , X . . |
$$ | . . . O . . . . . . . . . X . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Something was off after white's shoulder hit here.

I ended up in this position:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O X . . . . . . . . . . . . . . . . |
$$ | . O X O . . . . . . . . . . . X O . . |
$$ | . O X O . . . . . X . . . . . X O . . |
$$ | . X O O . . . . . . . . . . . X . . . |
$$ | X . X . . . . . . . . . . . . . X O . |
$$ | . X . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . X O . O . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . X . , . . . . . , . . . . . , . . . |
$$ | . . . O O O . O . . . . . . . . . . . |
$$ | . . X X X O . . . . . . . . . . . . . |
$$ | . . . . X X O O X . . . . . . . . . . |
$$ | . . . . . O X X O O . . . . . . . . . |
$$ | . . X . . X . . X O . . . . . . . . . |
$$ | . . . , O . . . . , . . . . . , X . . |
$$ | . . . O . . . . . . . . . X . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
This simply seems good for white. I'm not exactly sure where I went wrong with it, though.

I'll check with an AI shortly.

Re: Kirby's Study Journal

Posted: Wed Feb 16, 2022 8:45 am
by Kirby
Highlights...

Position 1

Here, I think I missed the most urgent area:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X . O . . |
$$ | . O X . . . . . . . . O . O X O . O . |
$$ | . O X O . . . . . X . X O X X X O . . |
$$ | . O X O . . . . . X . X O O . X O . . |
$$ | . X O O . . . . . . . O . . . X O X . |
$$ | X . X . . . . . . O . . . . . X X O . |
$$ | . X . . . . . . . . . O . O X X O . . |
$$ | . . . . . . . . . . . . . . X O . O . |
$$ | . . . . . . . . . . . . X . X O . O . |
$$ | . X . , . . . . . , . . . . O X X . . |
$$ | . . . O O O . O . . . . . . B . . . . |
$$ | . . X X X O . . . . . . . . . . . . . |
$$ | . O . . X X O O X . . . . . . . . . . |
$$ | . X X . . O X X O O . . . . . . . . . |
$$ | X O X X . X . . X O . . . . . . . . . |
$$ | . O O O O O X . . , . . . . . , X . . |
$$ | . O . O X O X . . . . . . X . . . . . |
$$ | O X X O X X . X . . . . . . . . . . . |
$$ | . O O . O . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Instead, I think I should help the weaker stones:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . X . O . . |
$$ | . O X . . . . . . . . O . O X O . O . |
$$ | . O X O . . B . . X . X O X X X O . . |
$$ | . O X O . . . . . X . X O O . X O . . |
$$ | . X O O . . . . . . . O . . . X O X . |
$$ | X . X . . . . . . O . . . . . X X O . |
$$ | . X . . . . . . . . . O . O X X O . . |
$$ | . . . . . . . . . . . . . . X O . O . |
$$ | . . . . . . . . . . . . X . X O . O . |
$$ | . X . , . . . . . , . . . . O X X . . |
$$ | . . . O O O . O . . . . . . X . . . . |
$$ | . . X X X O . . . . . . . . . . . . . |
$$ | . O . . X X O O X . . . . . . . . . . |
$$ | . X X . . O X X O O . . . . . . . . . |
$$ | X O X X . X . . X O . . . . . . . . . |
$$ | . O O O O O X . . , . . . . . , X . . |
$$ | . O . O X O X . . . . . . X . . . . . |
$$ | O X X O X X . X . . . . . . . . . . . |
$$ | . O O . O . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Position 2
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O X . . . . . . . . . . . . . . . . |
$$ | . O X O . . . . . . . . . . . X O . . |
$$ | . O X O . . . . . X . . . . . X O . . |
$$ | . X O O . . . . . . . . . . . X . . . |
$$ | X . X . . . . . . . . . . . . . X O . |
$$ | . X . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . X O . O . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . W . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . , O . . . . , . . . . . , X . . |
$$ | . . . O . . . . . . . . . X . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Something was off after white's shoulder hit here.

I ended up in this position:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O X . . . . . . . . . . . . . . . . |
$$ | . O X O . . . . . . . . . . . X O . . |
$$ | . O X O . . . . . X . . . . . X O . . |
$$ | . X O O . . . . . . . . . . . X . . . |
$$ | X . X . . . . . . . . . . . . . X O . |
$$ | . X . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . X O . O . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . X . , . . . . . , . . . . . , . . . |
$$ | . . . O O O . O . . . . . . . . . . . |
$$ | . . X X X O . . . . . . . . . . . . . |
$$ | . . . . X X O O X . . . . . . . . . . |
$$ | . . . . . O X X O O . . . . . . . . . |
$$ | . . X . . X . . X O . . . . . . . . . |
$$ | . . . , O . . . . , . . . . . , X . . |
$$ | . . . O . . . . . . . . . X . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
This simply seems good for white. I'm not exactly sure where I went wrong with it, though.

I'll check with an AI shortly.

Re: Kirby's Study Journal

Posted: Wed Feb 16, 2022 8:56 am
by Kirby
Two things largely stuck out to me when I analyzed with AI:

AI 1
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O X . . . . . . . . . . . . . . . . |
$$ | . O X O . . . . . . . . . . . X O . . |
$$ | . O X O . . . . . X . . . . . X O . . |
$$ | . X O O . . . . . . . . . . . X . . . |
$$ | X . X . . . . . . . . . . . . . X O . |
$$ | . X . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . X O . O . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . B . , . . . . . , . . . . . , . . . |
$$ | . . . O O O . . . . . . . . . . . . . |
$$ | . . X X X . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . , O . . . . , . . . . . , X . . |
$$ | . . . O . . . . . . . . . X . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Instead of the move above, the AI is wanting to put pressure on the two white stones:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O X . . . . . . . . . . . . . . . . |
$$ | . O X O . . . . . . . . . . . X O . . |
$$ | . O X O . . . . . X . . . . . X O . . |
$$ | . X O O . . . . . . . . . . . X . . . |
$$ | X . X . . . . . . . . . . . . . X O . |
$$ | . X . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . X O . O . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . O O O . . . . . . . . . . . . . |
$$ | . . X X X . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . , O . . . . , . . . . . , X . . |
$$ | . . . O . . B . . . . . . X . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
I suppose it's important to put that pressure on, early.

AI 2

Here, and in the following several moves:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O X . . . . . . . . . . . . . . . . |
$$ | . O X O . . . . . . . . . . . X O . . |
$$ | . O X O . . . . . X . . . . . X O . . |
$$ | . X O O . . . . . . . . . . . X . . . |
$$ | X . X . . . . . . . . . . . . . X O . |
$$ | . X . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . X O . O . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . X . , . . . . . , . . . . . , . . . |
$$ | . . . O O O . O . . . . . . . . . . . |
$$ | . . X X X O . . . . . . . . . . . . . |
$$ | . O . . X X O O X . . . . . . . . . . |
$$ | . X X . . O X X O O . . . . . . . . . |
$$ | X O X X . X . . X O . . . . . . . . . |
$$ | . O O O O O X . . , . . . . . , X . . |
$$ | . O . O X O X . . . . . . X . . . . . |
$$ | O X X O X X . X . . . . . . . . . . . |
$$ | . O O . O . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
The AI suggests that I can be ahead if I move out the cutting stone:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O X . . . . . . . . . . . . . . . . |
$$ | . O X O . . . . . . . . . . . X O . . |
$$ | . O X O . . . . . X . . . . . X O . . |
$$ | . X O O . . . . . . . . . . . X . . . |
$$ | X . X . . . . . . . . . . . . . X O . |
$$ | . X . . . . . . . . . . . . . X O . . |
$$ | . . . . . . . . . . . . . . X O . O . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . X . , . . . . . , . . . . . , . . . |
$$ | . . . O O O . O . . . . . . . . . . . |
$$ | . . X X X O . . . . . . . . . . . . . |
$$ | . O . . X X O O X B . . . . . . . . . |
$$ | . X X . . O X X O O . . . . . . . . . |
$$ | X O X X . X . . X O . . . . . . . . . |
$$ | . O O O O O X . . , . . . . . , X . . |
$$ | . O . O X O X . . . . . . X . . . . . |
$$ | O X X O X X . X . . . . . . . . . . . |
$$ | . O O . O . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
I felt the result was bad for black because of white's influence there. But I suppose the point is, white's influence isn't perfect. If I move out the black stones there, I can negate white's influence in the center.

Re: Kirby's Study Journal

Posted: Wed Feb 16, 2022 10:44 am
by Knotwilg
In this position:
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O X . . . . . . . . . . . . . . . . |
$$ | . O X O . . . . . . . . . . . X O . . |
$$ | . O X O . . . . . X . . . . . X O . . |
$$ | . X O O . . . . . . . . . . . X . . . |
$$ | X . X d . . . . . . . . . . . . X O . |
$$ | . X . . c . . . . . . . . . e X O . . |
$$ | . . . . . . . . . . . . . . X O . O . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . a . , . . . . . , . . . . . , . . . |
$$ | . . . O O O . . . . . . . . . . . . . |
$$ | . . X X X . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . , O . . . . , . . . . . , X . . |
$$ | . . . O . . b . . . . . . X . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Neither A nor B would occur to me, for different reasons. I would definitely feel the urge to play with the ponnuki, preventing C, either by playing C myself or D. Therefore I would not consider B because of the apparent urgency of the area. A is a move that goes along well with the 3 black stones below, almost a middle game joseki move, but it's cursing against the power of the ponnuki.

With hindsight, I can see that C is not a very efficient move for either Black or White. Black's ponnuki is too resilient for White to attack swiftly, while building influence towards no man's land. And White's three stones are out in the center, even after Black C.

So I think I understand why AI favors B, which is a rather severe approach to White's corner, while taking a wide stake at the bottom. Probably being a ladder breaker (ladder starting with E) is another added value.

Re: Kirby's Study Journal

Posted: Wed Feb 16, 2022 12:20 pm
by Kirby
I think you have a good point that 'a' makes the ponnuki a bit inefficient.

Re: Kirby's Study Journal

Posted: Tue Feb 22, 2022 3:19 pm
by Magicwand
e has some issues. You will lose points if u play e
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