It is currently Fri May 02, 2025 10:35 am

All times are UTC - 8 hours [ DST ]




Post new topic Reply to topic  [ 489 posts ]  Go to page Previous  1 ... 5, 6, 7, 8, 9, 10, 11 ... 25  Next
Author Message
Offline
 Post subject: Re: Prokovich game
Post #141 Posted: Mon Aug 30, 2010 8:26 am 
Honinbo

Posts: 9552
Liked others: 1602
Was liked: 1712
KGS: Kirby
Tygem: 커비라고해
R7 followed by P6 might be another option.

_________________
be immersed

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #142 Posted: Mon Aug 30, 2010 8:42 am 
Judan
User avatar

Posts: 5546
Location: Banbeck Vale
Liked others: 1104
Was liked: 1457
Rank: 1D AGA
GD Posts: 1512
Kaya handle: Test
Kirby wrote:
P6?


The only move, IMHO. To allow white to have it splits black. Then the white stones at M3/M4 could start running and black would have three weak groups to defend simultaneously.

_________________
Help make L19 more organized. Make an index: https://lifein19x19.com/viewtopic.php?f=14&t=5207

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #143 Posted: Mon Aug 30, 2010 9:00 am 
Judan
User avatar

Posts: 5546
Location: Banbeck Vale
Liked others: 1104
Was liked: 1457
Rank: 1D AGA
GD Posts: 1512
Kaya handle: Test
plankton wrote:
...
anyway w next move at r6 looks pretty favorable.
This might be what b should play as a response.
fixing aji in sente
Click Here To Show Diagram Code
[go]$$Bcm27
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . 2 . . |
$$ | . . . . . . . . . . . . X . 1 X O . . |
$$ | . . . O . . . . . . . . . . . O X . . |
$$ | . . . O . X . . . , . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


This seems slightly safer:

Click Here To Show Diagram Code
[go]$$Bcm27
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . X . 1 X O 2 . |
$$ | . . . O . . . . . . . . . . . O X . . |
$$ | . . . O . X . . . , . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

_________________
Help make L19 more organized. Make an index: https://lifein19x19.com/viewtopic.php?f=14&t=5207

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #144 Posted: Mon Aug 30, 2010 9:28 am 
Tengen
User avatar

Posts: 4844
Location: Mechanicsburg, PA
Liked others: 62
Was liked: 505
Rank: Wbaduk 7D
KGS: magicwand
Tygem: magicwand
Wbaduk: rlatkfkd
DGS: magicwand
OGS: magicwand
i am not sure about next move but i am pretty sure black is ahead.
Click Here To Show Diagram Code
[go]$$Bcm27
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . 2 . . |
$$ | . . . . . . . . . . . . X . 1 X O . . |
$$ | . . . O . . . . . 3 . . . . . O X . . |
$$ | . . . O . X . . . , . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

_________________
"The more we think we know about
The greater the unknown"

Words by neil peart, music by geddy lee and alex lifeson

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #145 Posted: Mon Aug 30, 2010 10:05 am 
Gosei

Posts: 1596
Liked others: 891
Was liked: 533
Rank: AGA 2k Fox 3d
GD Posts: 61
KGS: dfan
Since many people have already guessed it:
Click Here To Show Diagram Code
[go]$$Bcm27 ACTUAL GAME: Move 27
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . X . 1 X O . . |
$$ | . . . O . . . . . . . . . . . O X . . |
$$ | . . . O . X . . . , . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #146 Posted: Mon Aug 30, 2010 2:02 pm 
Dies with sente

Posts: 92
Liked others: 48
Was liked: 6
dfan wrote:
Since many people have already guessed it:
Click Here To Show Diagram Code
[go]$$Bcm27 ACTUAL GAME: Move 27
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . X . 1 X O . . |
$$ | . . . O . . . . . . . . . . . O X . . |
$$ | . . . O . X . . . , . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


I liked Joaz's response (28). Now I think (with heavy influence from previous comments) that 29 looks big. Unless white has other ideas, it also seems to have the nice benefit of inducing Black 31. But, this looks too good for black. My first thought is 32-34, which black probably has to respond to somewhere around b (lest white plays there first). This leaves white to invade around c, since that might be the largest area now (although those black corners look big).

Of course, the bottom looks pretty large, I don't know if a jump right in with 34 makes more sense.

Click Here To Show Diagram Code
[go]$$Bcm27 ACTUAL GAME: Move 27
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . c . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 7 . . . . . . . . . . . . . . . . |
$$ | . . 3 6 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . 8 . . . . . . . . . . . . . |
$$ | . . . 4 . . . . . . . . . . . . O . . |
$$ | . a . . . 5 . . b . . . . . . . . . . |
$$ | . . . . . . . . . . . . X . 1 X O 2 . |
$$ | . . . O . . . . . . . . . . . O X . . |
$$ | . . . O . X . . . , . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #147 Posted: Mon Aug 30, 2010 2:35 pm 
Lives with ko

Posts: 160
Liked others: 10
Was liked: 37
Rank: UK 3 dan
Wow, this game has moved on a lot.
It's been getting much harder to comment on and predict since R8.

As everyone has said, the next move should be on the right. Playing anywhere else will be a disaster.

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


I'm not sure what the best move to defend is, it must be either a,b or c below.

Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . a b . . |
$$ | . . . . . . . . . . . . X . X X O c . |
$$ | . . . O . . . . . d . . . . . O X . . |
$$ | . . . O . X . . . , . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


It looks at a glance that White can get away with a but, even though there is nothing Black can do immmediately, it leaves so much aji for minimal gain so I think Joaz's c is best.

So where next? C12 is huge. But I think the bottom is urgent. If Black doesn't add a move here then, when White moves out, it affects the strength of 3 groups simultaneously. I like simply jumping to d above. This seems the best balance between protecting the weakness at H3 and capturint the two White stones.

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #148 Posted: Mon Aug 30, 2010 3:28 pm 
Judan
User avatar

Posts: 5546
Location: Banbeck Vale
Liked others: 1104
Was liked: 1457
Rank: 1D AGA
GD Posts: 1512
Kaya handle: Test
Even the straight tobi does not work:

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

_________________
Help make L19 more organized. Make an index: https://lifein19x19.com/viewtopic.php?f=14&t=5207

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #149 Posted: Mon Aug 30, 2010 3:49 pm 
Lives in gote

Posts: 553
Liked others: 61
Was liked: 250
Rank: AGA 5 dan
Click Here To Show Diagram Code
[go]$$Bcm29
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . a b . . |
$$ | . . . . . . . . . . . . X . X X O c . |
$$ | . . . O . . . . . . 1 . . . . O X . . |
$$ | . . . O . X . . . , . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


After W defends with one of {abc}, B can capture two stones cleanly with L5. This tight capture appeals to me more than any looser move, despite the aji at H3. I presume B played the sequence on the right to get the stone at P6 in sente to solidify this capture.

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #150 Posted: Mon Aug 30, 2010 4:00 pm 
Dies in gote

Posts: 20
Liked others: 3
Was liked: 1
Rank: KGS 2d
Joaz Banbeck wrote:

This seems slightly safer:

Click Here To Show Diagram Code
[go]$$Bcm27
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . X . 1 X O 2 . |
$$ | . . . O . . . . . . . . . . . O X . . |
$$ | . . . O . X . . . , . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


I dont see the aji that w is so worried about.
W 26 at S6 looks submissive to me and B may be able to flatten w out with a and b later. B marked stones are not weakened by this move either.

Click Here To Show Diagram Code
[go]$$Bcm27
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . a . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . b O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . X . B B O O . |
$$ | . . . O . . . . . . . . . . . O X . . |
$$ | . . . O . X . . . , . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


I am starting to think that W will play 26 here.
There is a ko threat at a now but a followup ko threat at b is a slight point loss and further followups incur greater loss.

The benefit of Q7 is that it gives w a higher position and that is important from a full board view. B marked stones have less liberties also.

Click Here To Show Diagram Code
[go]$$Wcm26
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . 1 . . . |
$$ | . . . . . . . . . . . . X . B B O a . |
$$ | . . . O . . . . . . . . . . . O X . . |
$$ | . . . O . X . . . , . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O b . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #151 Posted: Mon Aug 30, 2010 7:32 pm 
Gosei

Posts: 1596
Liked others: 891
Was liked: 533
Rank: AGA 2k Fox 3d
GD Posts: 61
KGS: dfan
Click Here To Show Diagram Code
[go]$$Wcm28 ACTUAL GAME: Move 28
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . 1 . . . |
$$ | . . . . . . . . . . . . X . X X O . . |
$$ | . . . O . . . . . . . . . . . O X . . |
$$ | . . . O . X . . . , . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #152 Posted: Mon Aug 30, 2010 7:40 pm 
Honinbo

Posts: 9552
Liked others: 1602
Was liked: 1712
KGS: Kirby
Tygem: 커비라고해
I think M5, as someone suggested earlier (Magicwand, maybe?) might be good.

_________________
be immersed

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #153 Posted: Mon Aug 30, 2010 8:08 pm 
Lives with ko

Posts: 160
Liked others: 10
Was liked: 37
Rank: UK 3 dan
Joaz Banbeck wrote:
Even the straight tobi does not work:

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


I think Black has a better answer for 3

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

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #154 Posted: Mon Aug 30, 2010 9:29 pm 
Dies in gote

Posts: 20
Liked others: 3
Was liked: 1
Rank: KGS 2d
Tooveli wrote:

I think Black has a better answer for 3

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


I would prefer to be able to solidify that area with the nice ikken tobi at k5 but right now I dont think B can block at a.

W just has too many liberties and b is too many cutting points.
Click Here To Show Diagram Code
[go]$$Bcm29 Diagram 1
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . a . . . O . . . |
$$ | . . . . . . . . . . 3 2 X . X X O . . |
$$ | . . . O . . . . . 1 . 6 4 5 . O X . . |
$$ | . . . O . X . . . . . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

So maybe w will want to induce a sequence to enable a clean capture with k5 for example:
Click Here To Show Diagram Code
[go]$$Bcm29 Diagram 2
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . 6 . 1 . . . |
$$ | . . . . . . . . . . . . 5 4 . . O . . |
$$ | . . . . . . . . . . . . . 3 2 O . . . |
$$ | . . . . . . . . . . . . X . X X O . . |
$$ | . . . O . . . . . 7 . . . . . O X . . |
$$ | . . . O . X . . . . . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

EDIT:
I just was thinking about the position and it doesnt look good enough for b.
I think B should play on a larger scale and try to cover the peep at a in order to preserve the aji of the marked stones.
Click Here To Show Diagram Code
[go]$$Bcm35 Diagram 3
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . O . B . . . |
$$ | . . . . . . . . . . . . X O . . O . . |
$$ | . . . 2 . . . . . . . . . X O O . . . |
$$ | . . . . . 1 . . . . . . X . X X O . . |
$$ | . . . O . . . . . . . . . a 3 O B . . |
$$ | . . . O . X . . . . . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

EDIT2:
OK maybe im making too many guesses but i keep looking back at the thread and theres no new posts so... and i hid the diagrams cause it got too long.

I think my move order was inferior and that p5 immediately is a firm move.
If w peeps at a before playing move 32 in diagram 2 , it makes the b move 29 at q9 pointless.
Click Here To Show Diagram Code
[go]$$Bcm29 Diagram 4
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . X . X X O . . |
$$ | . . . O . . . . . . . . . a 1 O X . . |
$$ | . . . O . X . . . . . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

trying to cut at a only makes w stronger.
Click Here To Show Diagram Code
[go]$$Bcm29 Diagram 5
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . 1 . . . |
$$ | . . . . . . . . . . . . 8 6 a . O . . |
$$ | . . . . . . . . . . . . . 3 2 O . . . |
$$ | . . . . . . . . . . . . X 7 X X O . . |
$$ | . . . O . . . . . . . . 5 4 . O X . . |
$$ | . . . O . X . . . . . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #155 Posted: Tue Aug 31, 2010 8:55 am 
Gosei

Posts: 1596
Liked others: 891
Was liked: 533
Rank: AGA 2k Fox 3d
GD Posts: 61
KGS: dfan
Click Here To Show Diagram Code
[go]$$Bcm29 ACTUAL GAME: Move 29
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . X . X X O . . |
$$ | . . . O . . . . . . 1 . . . . O X . . |
$$ | . . . O . X . . . , . O X . . O . . . |
$$ | . . O X X . . . . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #156 Posted: Tue Aug 31, 2010 9:43 am 
Lives with ko

Posts: 160
Liked others: 10
Was liked: 37
Rank: UK 3 dan
It seems like I'm not doing very well at this.

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


I think White will play 1 next. Hopefully he will, because then I can stop saying how big this move is every single time I post. The point 'a' starts glowing every time I look at the board, but I think it would be early to play this now, Black is undercut here so it doesn't matter too much if Black spends an extra move on the bottom. Also, I'm not sure that there is a clean way for Black to fix all the aji on the bottom in one move anyway.

By the way, thanks for doing this dfan! Are there many comments that you are skipping because they affect the discussion or are we getting most of them?

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #157 Posted: Tue Aug 31, 2010 11:42 am 
Gosei

Posts: 1596
Liked others: 891
Was liked: 533
Rank: AGA 2k Fox 3d
GD Posts: 61
KGS: dfan
Tooveli wrote:
I think White will play 1 next. Hopefully he will, because then I can stop saying how big this move is every single time I post.

:)

Quote:
By the way, thanks for doing this dfan! Are there many comments that you are skipping because they affect the discussion or are we getting most of them?

You are quite welcome! I am posting most of the comments, but I try to avoid ones that might spoil the future of the game a little (e.g., I wouldn't have posted a comment that said how your :w1: would have been a good alternative earlier).

This has been very interesting to me so far. For example, Joaz guessed Black's basic strategy in the lower right back when Black played R5, but the execution of it has had a bunch of subtleties that people didn't predict. Of course, I don't know whether the actual moves have been been objectively better than the ones people here have suggested or if it is just a matter of style.

By the way, one of the actual game comments said that White's last move at Q7 could have been at R7, but it did not mention R6.

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #158 Posted: Tue Aug 31, 2010 11:47 am 
Honinbo

Posts: 9552
Liked others: 1602
Was liked: 1712
KGS: Kirby
Tygem: 커비라고해
I like c13, too, but maybe g17.

_________________
be immersed

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #159 Posted: Tue Aug 31, 2010 4:24 pm 
Lives in gote

Posts: 553
Liked others: 61
Was liked: 250
Rank: AGA 5 dan
Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . b . . . . X . . . . |
$$ | . . X , X . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . a . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . O , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . d . . . . . . X . X X O . . |
$$ | . . . O . . . . . . X . . . . O X . . |
$$ | . . . O . X . . . , . O X . . O . . . |
$$ | . . O X X . . c . X . O . X . . O . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

This looks like a great middle-game "find the next move" problem. I would be very interested if the game commentary says anything about the various possibilities here. My top four choices are listed:

a) and b) are both very large points but not really vital
c) is a vital point with a lot of aji, but feels like an overplay now
d) is a point both sides would like for expansion, related to the aji at c

I will pick "d".

Top
 Profile  
 
Offline
 Post subject: Re: Prokovich game
Post #160 Posted: Tue Aug 31, 2010 6:51 pm 
Dies in gote

Posts: 20
Liked others: 3
Was liked: 1
Rank: KGS 2d
I like the 'd' option at f6 also.

Seems like a good idea to try to make b spend as many moves as possible on the bottom.

I think it makes b overconcentrated alot. there is still q2 yose that is threatening to o2 connecting m3 stones and monkey jump on bottom.

Top
 Profile  
 
Display posts from previous:  Sort by  
Post new topic Reply to topic  [ 489 posts ]  Go to page Previous  1 ... 5, 6, 7, 8, 9, 10, 11 ... 25  Next

All times are UTC - 8 hours [ DST ]


Who is online

Users browsing this forum: Google [Bot] and 1 guest


You cannot post new topics in this forum
You cannot reply to topics in this forum
You cannot edit your posts in this forum
You cannot delete your posts in this forum
You cannot post attachments in this forum

Search for:
Jump to:  
Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group