Prokovich game

Kirby · **#81**

C12, maybe. I would play this, threatening to invade, then play a move on the top.

freegame · **#82**

my answer to (analysis of) other suggestions:

my thoughts for the next move:

looking ahead:

Joaz Banbeck · **#83**

Kirby's suggestion looks pretty good.

I also like this:

Click Here To Show Diagram Code: [go]$$Wcm14 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . b . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . a . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . 4 . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . 1 . X . . . , . . . . . , . . . | $$ | . . O X 2 . . . . X . O . . . . O . . | $$ | . . 3 . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

daniel_the_smith · **#84**

Joaz, what on earth is that :b17:

doing?

EDIT: Doesn't it just solidify white without helping black?

Click Here To Show Diagram Code: [go]$$Wcm14 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . b . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . a . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . 5 4 . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . 1 . X . . . , . . . . . , . . . | $$ | . . O X 2 . . . . X . O . . . . O . . | $$ | . . 3 . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Joaz Banbeck · **#85**

daniel_the_smith wrote:

Joaz, what on earth is that :b17:

doing?

EDIT: Doesn't it just solidify white without helping black?

Click Here To Show Diagram Code: [go]$$Wcm14 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . b . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . a . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . 5 4 . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . 1 . X . . . , . . . . . , . . . | $$ | . . O X 2 . . . . X . O . . . . O . . | $$ | . . 3 . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The idea is that it makes black safer while over-concentrating white. When black plays C12, white still has to respond around C8 or D8. ( It may have flaws, but that is the idea. )
We all know that black wants to tenuki - probably to the right side - and this attempts to make his group safe before doing so.

emeraldemon · **#86**

I also like C12, but is something like this possible?

Click Here To Show Diagram Code: [go]$$Wcm14 ACTUAL GAME: Moves 14-16 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 8 . . | $$ | . . . O . . . . . . . . . . . . . 7 . | $$ | . . . 1 . X . . . , . . . . 6 4 . . . | $$ | . . O X 2 . . . . X . O . . . 5 O . . | $$ | . . 3 . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Joaz Banbeck · **#87**

emeraldemon wrote:

I also like C12, but is something like this possible?

Click Here To Show Diagram Code: [go]$$Wcm14 ACTUAL GAME: Moves 14-16 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 8 . . | $$ | . . . O . . . . . . . . . . . . . 7 . | $$ | . . . 1 . X . . . , . . . . 6 4 . . . | $$ | . . O X 2 . . . . X . O . . . 5 O . . | $$ | . . 3 . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

White can play it differently:

Click Here To Show Diagram Code: [go]$$Wcm14 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . 9 . | $$ | . . . . . . . . . . . . . . . 8 . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . 1 . X . . . , . . . . 6 4 . . . | $$ | . . O X 2 . . . . X . O . . 7 5 O . . | $$ | . . 3 . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Or maybe this is more likely:

Click Here To Show Diagram Code: [go]$$Wcm16 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 9 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 8 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . O . X . . . , . . . 6 4 2 0 . . | $$ | . . O X X . . . . X . O . 7 5 3 O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Hmmm... that looks too easy for black...

Maybe white tries this:

Click Here To Show Diagram Code: [go]$$Bcm17 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 0 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 7 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . 9 . . . | $$ | . . . O . . . . . . . . . . . . 8 . . | $$ | . . . O . X . . . , . . . 5 3 1 . . . | $$ | . . O X X . . . . X . O . 6 4 2 O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

dfan · **#88**

Click Here To Show Diagram Code: [go]$$Bcm17 ACTUAL GAME: Move 17 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . 1 . . | $$ | . . . O . X . . . , . . . . . , . . . | $$ | . . O X X . . . . X . O . . . . O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Chew Terr · **#89**

Okay, this isn't too surprising. Everybody was mostly clamoring to predict some sort of reduction move in this corner. I don't remember if someone guessed this one in particular. I'm betting that white will approach this new stone with a two- or three-space extension from above, black will come out, and white will get pushed low. An alternative that I am curious about is this:

emeraldemon · **#90**

Hey, maybe that shoulder-hit idea wasn't too far off! So several people (including me) thought C12 was likely. Why didn't white play there? Also, next move will be knight extension:

Click Here To Show Diagram Code: [go]$$Bcm17 Obvious choice? $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . 1 . . | $$ | . . . O . X . . . , . . . . 2 , . . . | $$ | . . O X X . . . . X . O . . . . O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Chew Terr · **#91**

Emerald: If that happens, could white build up strength by pushing the right down and then invade to the left?

Kirby · **#92**

I'd probably play P4 as emeraldemon suggested. Another possibility is P3. I feel a little bit like P3 is lax, though, since M3 is present.

Tooveli · **#93**

Chew Terr wrote:

Emerald: If that happens, could white build up strength by pushing the right down and then invade to the left?

I know my name is not Emerald but I think I can answer this.

My thoughts.

I liked freegame's idea for move 17, but I didn't like the way it let White potentially get the big move at C13. I would have suggested C12 directly and, if not that, then R9. I think (with hindsight) Black approached at the bottom right because C12 directly makes it very hard to invade the lower right after White R14 (or maybe Q6). Playing R5 instead of R9 allows Black the chance of getting sente.

Click Here To Show Diagram Code: [go]$$Bcm17 Hard for Black to get sente $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 2 . . | $$ | . . c . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . 1 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . a . . | $$ | . . . O . . . . . . . . . . . . b . . | $$ | . . . O . X . . . , . . . . . , . . . | $$ | . . O X X . . . . X . O . . . . O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

If Black plays a, then White can tenuki and take c (which seems huge). If Black plays b, then White can wedge and either get a better results locally or get sente for c. So I think this is why Black changes the order.

Click Here To Show Diagram Code: [go]$$Bcm17 Black gets sente? $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 4 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . 5 . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 3 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . 1 . . | $$ | . . . O . X . . . , . . . . 2 , . . . | $$ | . . O X X . . . . X . O . . . . O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

If White answers naturally at 18 then Black exchanges 19 for 20 and gets to play 21.

Having said all this I'm starting to consider a pincer for White's next move. The pincer didn't naturally occur to me because of how unusual it is with 3-3 as Black has a strong followup in the corner. I still can't quite see one working so I stick with my last diagram as my prediction.

Joaz Banbeck · **#94**

As Tooveli has already suggested, letting black live easily on the right side is good for black. Following that logic, I consider an approach from above to be forced:

Click Here To Show Diagram Code: [go]$$Bcm17 White's next move $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 2 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . 1 . . | $$ | . . . O . X . . . , . . . . . , . . . | $$ | . . O X X . . . . X . O . . . . O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

But then the question naturally arises: if white's move is this good and this obvious, why would black play :b17:

there in the first place? Surely, as a pro, he can see :w18:

coming.

And he can see what it looks like if he runs:

Click Here To Show Diagram Code: [go]$$Bcm17 A bad sequence for black $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 2 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . 5 . 3 . 1 . . | $$ | . . . O . X . . . , 6 . . . . , . . . | $$ | . . O X X . . . . X . O . . 4 . O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

If he attaches as Chew inquired about, white just slides under to connect M3.

Click Here To Show Diagram Code: [go]$$Bcm17 Another bad sequence for black $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 2 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . 1 . . | $$ | . . . O . X . . . , . . . . . , . . . | $$ | . . O X X . . . . X . O . 7 5 3 O . . | $$ | . . O . . . . . . . . . . 8 6 4 . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

All of these look better for white. So what is black up to?

My anwer to this is derived by a long and twisted route. It starts with an observation by Topazg and maybe others that black has a weak spot:

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

Black has several obvious ways to fix this. None of them look good.

This is too slow and over concentrated:

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

This encourages the parallel response from white, and white gets more from the exchange than black:

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

Black would like to have this problem go away without resorting to slack moves like the two above. The best solution that I can see is to keep white's M3 stone weak - or even kill it.

Black would like to do something like this:

Click Here To Show Diagram Code: [go]$$B P3 may be just as good $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . . . . | $$ | . . . O . X . . . , . . . . . , . . . | $$ | . . O X X . . . . X . O . 1 . . O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

But that just leads to this, and black has to take a move to defend his lower left group, and it ends up looking good for white:

Click Here To Show Diagram Code: [go]$$B I'm not certain about exactly where 4 goes $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . 3 . 2 . . . . . . . | $$ | . . . O . X . . . , . . . . 4 , . . . | $$ | . . O X X . . . . X . O . 1 . . O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

So I've been pondering sequences like those above, noting that black would like to play something like O3 or P3 without the natural white response at M5 being available. Then I see black make a move that makes no sense by itself.

My conclusion is that black's R5 is a sacrifice, and that he is going to make a double attack on the corner like this:

Click Here To Show Diagram Code: [go]$$Bcm17 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 2 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . 1 . . | $$ | . . . O . X . . . , . . . . . , . . . | $$ | . . O X X . . . . X . O . . 3 . O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

...or this:

Click Here To Show Diagram Code: [go]$$Bcm17 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 2 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . 1 . . | $$ | . . . O . X . . . , . . . . . , . . . | $$ | . . O X X . . . . X . O . 3 . . O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

...or this:

Click Here To Show Diagram Code: [go]$$Bcm17 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 2 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . 1 . . | $$ | . . . O . X . . . , . . . 3 . , . . . | $$ | . . O X X . . . . X . O . . . . O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

One of the things that I am not sure about is how easy is it to attack a 3-3 stone, even with two approach moves?
The following are speculations:

Click Here To Show Diagram Code: [go]$$Wm20 $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . 1 . . . 8 X . . | $$ | . . . O . X . . . , . . . . . 7 5 6 . | $$ | . . O X X . . . . X . O . . X . O 4 . | $$ | . . O . . . . . . . . . . . . . 3 2 . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

Click Here To Show Diagram Code: [go]$$Wm20 $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . 1 . . . . X . . | $$ | . . . O . X . . . , . . . . 7 , 5 6 . | $$ | . . O X X . . . . X . O . X . . O 4 . | $$ | . . O . . . . . . . . . . . . . 3 2 . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

dfan · **#95**

Click Here To Show Diagram Code: [go]$$Wcm18 ACTUAL GAME: Move 18 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 1 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . X . . | $$ | . . . O . X . . . , . . . . a , . . . | $$ | . . O X X . . . . X . O . . . . O . . | $$ | . . O . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

The commentary says that White a, Black 18 would have been good for Black.

Magicwand · **#96**

Click Here To Show Diagram Code: [go]$$Wcm18 ACTUAL GAME: Move 18 $$ --------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . X , X . . . . , . . . . . , X . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . O . . | $$ | . . O , . . . . . , . . . . . , . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . 1 . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . O . . . . . . . . . . . . X . . | $$ | . . . O . X . . . , . . . . . 3 . . . | $$ | . . O X X . . . . X . O . . 2 . O . . | $$ | . . O . . . . . . . . . . . . . . 4 . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ---------------------------------------[/go]

it's been 20 years since i studied japanese professional game. i think next few sequence is above...

dfan · **#97**

Magicwand wrote:

it's been 20 years since i studied japanese professional game. i think next few sequence is above...

Do you think this game is Japanese?

freegame · **#98**

Joaz Banbeck posted almost every possible follow-up.

My guess is the same as one of his suggestions.

my thoughts:

mitsun · **#99**

I think Joaz has the right idea -- B will play for a trade like that shown below. I prefer B1 here better than one space to the right, as it captures W more cleanly.

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

freegame · **#100**

@ mitsun

provided that up to :b1:

is the actual game,
don't you think they will put up more of a fight?
It seems very passive to each take one side...
I also like black in your diagram, so I guess white
will start a fight somehow, and not allow what you suggested.

Prokovich game

Who is online