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Guess the next pro move #1

https://lifein19x19.com/viewtopic.php?t=521

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Guess the next pro move #1

Posted: Wed May 12, 2010 5:35 pm
by Kirby
Here's a game between two pros. Among the choices, where do you think that black played next?

Click Here To Show Diagram Code
[go]$$Bcm1
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O O . O . . . . . . . . . . . . . . |
$$ | . X O X O X X . O . . O . . . . . . . |
$$ | O O X X O X . . . , c . . . . X . . . |
$$ | . X X O X . . . . . . . . . . . . . . |
$$ | . O . O X . X . . . . . . . . . d . . |
$$ | . . . O X . . . . . . . . . . . . . . |
$$ | . . . O O . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . e . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . X . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . X . X . . . . |
$$ | . . X . . . . . . a . O X . . . O . . |
$$ | . . . . O . . b . . O . O . X . O X . |
$$ | . . . . . O . . . . . . . . . X X O . |
$$ | . . O O O X X . . , . O . . . X O O . |
$$ | . . X X X . . X . . . . . . X . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Re: Guess the next pro move #1

Posted: Wed May 12, 2010 5:41 pm
by Magicwand
B 100% sure

Re: Guess the next pro move #1

Posted: Wed May 12, 2010 5:41 pm
by Jedo
Cool idea.

My guess is B. The two floating white groups seem like the most important thing to me, and keeping them seperated would be ideal. That leaves either A or B, and it's my feelings that A is too close to the white group and might give white a chance to still connect. To be honest though, that's just my guess :oops:

Re: Guess the next pro move #1

Posted: Wed May 12, 2010 5:48 pm
by Jordus
C...

Re: Guess the next pro move #1

Posted: Wed May 12, 2010 5:53 pm
by Harleqin
'b'. It separates two weak groups.

Re: Guess the next pro move #1

Posted: Wed May 12, 2010 5:56 pm
by dfan
b, keeping two weak groups separated, definitely looks right to me and is the move I would choose if this were a "guess the move" problem. I have a feeling things must not be that simple, though...

Re: Guess the next pro move #1

Posted: Wed May 12, 2010 6:14 pm
by Dusk Eagle
'b', to split the two weak white groups. White would like to play at 'b' himself.

Re: Guess the next pro move #1

Posted: Wed May 12, 2010 6:40 pm
by k1ndofblue
I Like B. White has 2 weak groups that you want to keep seprated.

Re: Guess the next pro move #1

Posted: Wed May 12, 2010 6:42 pm
by Tyson2011
i'd play B for sure, D would probably be my second choice...

Re: Guess the next pro move #1

Posted: Wed May 12, 2010 6:45 pm
by Kirby
I'll post the answer, along with the game tomorrow.

Re: Guess the next pro move #1

Posted: Wed May 12, 2010 8:28 pm
by ketchup
First C then A/D. I believe C holds the most favorable point for black as it seems to indirectly reinforce all of black's groups.

Click Here To Show Diagram Code
[go]$$Bcm1
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . O O . O . . . . . . . . . . . . . . |
$$ | . X O X O X X . O . . O . . . . . . . |
$$ | O O X X O X . . . , 1 . . . . X . . . |
$$ | . X X O X . . . . . . . . . . . . . . |
$$ | . O . O X . X . . . . . . . . . . . . |
$$ | . . . O X . . . . . . . . . . . . . . |
$$ | . . . O O . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . X . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . X . X . . . . |
$$ | . . X . . . . . . . . O X . . . O . . |
$$ | . . . . O . . . . . O . O . X . O X . |
$$ | . . . . . O . . . . . . . . . X X O . |
$$ | . . O O O X X . . , . O . . . X O O . |
$$ | . . X X X . . X . . . . . . X . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


I go by feel, and to me, I'd be very hasty to try to separate white's two weak groups, so I'll go with a patient move at C as the pro's play.

Re: Guess the next pro move #1

Posted: Wed May 12, 2010 8:50 pm
by Solomon
A. Black can launch a two-pronged attack on the two White groups in the lower left, so that leaves only A and B to consider. However, I think A has more merits than B:
  • It hits the soft spot of M7, it can almost be considered a vital point on the shape.
  • It threatens M8, which is a big momentum move. White would be painful in managing both groups when it's blocked from the top like that.
  • It also threatens K6, which is clearly dangerous.
  • In contrast, B doesn't really attack either group's shape. In fact, if B was at G6 instead of H6, I think it'd be harder to decide between A and B.
In conclusion, I think both A and B have the right idea, but in my humble opinion A executes the idea more elegantly.

Re: Guess the next pro move #1

Posted: Thu May 13, 2010 1:10 am
by SoDesuNe
Uhhh, 'a' or 'b'? First 'a' then split with 'b'? Hard decision. Probably both wrong. I go for 'b'.

Re: Guess the next pro move #1

Posted: Thu May 13, 2010 1:52 am
by Gresil
B. A would on the surface have the option of building something in the center with C, though, but reading if it works is beyond me.

Re: Guess the next pro move #1

Posted: Thu May 13, 2010 1:57 am
by kirkmc
B looks obvious. That group on the left is not alive, and any attacking moves B plays, even if he doesn't kill, are freebies and get him influence. Also, if W plays B first, that gets him almost-connected to the floating center group. I don't see A as being as useful, as that bottom-center group is more-or-less out into the center.
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