$$c
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$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . B . O . . . . . . |
$$ | . . . O . . . . . , . . . . X , O . . |
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$$ | . . . . . . . . . . . . . . X . . . . |
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$$ | . . . O . . . . . , . . . . X , O . . |
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$$ | . . . . . . . . . . . . . . . . O . . |
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- Click Here To Show Diagram Code
[go]$$c
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$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . B . O . . . . . . |
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$$ ---------------------------------------[/go]
With white's latest, the usual way to play this is at
below. ( I have seen 'a' and even 'b' played. ) The general idea is to attack the marked stone, either killing it, or sliding under at 'c'.
White is usually content to be complicit in the attack on his stone, as he gets
as shown below. This is almost always done when white has some presence on the left side, other than just one stone in the corner - often one of the points labeled 'a' below.
This is what I was referring to when I stated in the previous post that some pros were trying to 'rehabilitate' R13. White stabilizes himself quickly on the right, black goes leftward to get eyespace, and white counter-attacks with
, making profit on the left side.
With this in mind, I think that MHO has misplayed just a teeny bit. He has nothing but the 4-4 stone on the left side. Any profit that he makes will be in gote. I won't go so far as to say that this is a mistake, but most pro games that I've seen don't go this way.
I could, therefore, go with the sequence shown below, which should, in theory, leave him undercompensated for the loss of the stone at L17. I'd be safe up top, and he would be playing on the left side to make something to work with 2.
He would have sente, but I'd be ahead in both territory and influence. Given that I have better influence, I expect him to lose sente fairly quickly.
Then I have the approach at a ( which is tricky to pincer with 'b', because 'c' then becomes the ladder-breaker for the opposite corner ) or the approch at 'e' and an unpleasant little play at 'd'.
I'd expect the approach at 'f' or the wedge at 'g'. I'll be happy to fight him anyplace on the board.
below. ( I have seen 'a' and even 'b' played. ) The general idea is to attack the marked stone, either killing it, or sliding under at 'c'.$$c Diagram #1
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$$ | . . . . . . . . . . . . c . X . . . . |
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$$ | . . . O . . . . . b . a . . X , O . . |
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$$ | . . . . . . . . . . . . c . X . . . . |
$$ | . . . . . . . . . . 1 . W . . . . . . |
$$ | . . . O . . . . . b . a . . X , O . . |
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- Click Here To Show Diagram Code
[go]$$c Diagram #1
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$$ | . . . . . . . . . . . . c . X . . . . |
$$ | . . . . . . . . . . 1 . W . . . . . . |
$$ | . . . O . . . . . b . a . . X , O . . |
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$$ | . . . , . . . . . , . . . . . , . . . |[/go]
White is usually content to be complicit in the attack on his stone, as he gets
as shown below. This is almost always done when white has some presence on the left side, other than just one stone in the corner - often one of the points labeled 'a' below.$$c Diagram #2
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$$ | . . a . . . . . . . . . . . . . . . . |
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$$ | . . a a . . . . . , . . . . . , . . . |
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$$ | . . . X . . . . . , . . . . X , . . . |
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$$ ---------------------------------------
- Click Here To Show Diagram Code
[go]$$c Diagram #2
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$$ | . . . . . . . . . . . . . . X . . . . |
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$$ | . . a a . . . . . , . . . . . , . . . |
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$$ ---------------------------------------[/go]
This is what I was referring to when I stated in the previous post that some pros were trying to 'rehabilitate' R13. White stabilizes himself quickly on the right, black goes leftward to get eyespace, and white counter-attacks with
, making profit on the left side.With this in mind, I think that MHO has misplayed just a teeny bit. He has nothing but the 4-4 stone on the left side. Any profit that he makes will be in gote. I won't go so far as to say that this is a mistake, but most pro games that I've seen don't go this way.
I could, therefore, go with the sequence shown below, which should, in theory, leave him undercompensated for the loss of the stone at L17. I'd be safe up top, and he would be playing on the left side to make something to work with 2.
$$c Diagram #3
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$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . . . e . . 2 . 1 . O . . . . . . |
$$ | . . . O . . . . . , . 3 . . X , O . . |
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$$ | . . a . c . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
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$$ | . . . b . . . . . . . . . . . . d . . |
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$$ | . . f . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . g . . . . . . . . . |
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$$ | . . a . c . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
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$$ | . . . b . . . . . . . . . . . . d . . |
$$ | . . . , . . . . . , . . . . . , . . . |
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$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . f . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . g . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------
- Click Here To Show Diagram Code
[go]$$c Diagram #3
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$$ | . . . . . . . . . . . . . . X . . . . |
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$$ | . . . O . . . . . , . 3 . . X , O . . |
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$$ | . . a . c . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . b . . . . . . . . . . . . d . . |
$$ | . . . , . . . . . , . . . . . , . . . |
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$$ | . . f . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . X , . . . |
$$ | . . . . . . . . . g . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
He would have sente, but I'd be ahead in both territory and influence. Given that I have better influence, I expect him to lose sente fairly quickly.
Then I have the approach at a ( which is tricky to pincer with 'b', because 'c' then becomes the ladder-breaker for the opposite corner ) or the approch at 'e' and an unpleasant little play at 'd'.
I'd expect the approach at 'f' or the wedge at 'g'. I'll be happy to fight him anyplace on the board.
Trigger for Araban:
$$Wc
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$$ | . . . . . . . . . . . . . . X . . . . |
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$$ | . . . O . . . . . , . 2 . . X , O . . |
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$$ | . . . O . . . . . , . 2 . . X , O . . |
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$$ | . . . X . . . . . , . . . . X , . . . |
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$$ ---------------------------------------
- Click Here To Show Diagram Code
[go]$$Wc
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$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . . . . . . 1 . B . O . . . . . . |
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$$ | . . . X . . . . . , . . . . X , . . . |
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$$ ---------------------------------------[/go]
is an overstatement. There is still a lot of aji with the stone and B needs to be wary of 'a' at all times. However, because Black invested another move at the top it's also true that N17 got hurt at the expense of me pressuring B from the outside.
is a nice extension from my 4-4, but it's also worth noting that it does not necessarily stake any territory at the top either; it's just a helping hand for my 4-4. Even playing a move like 'b' for W does not guarantee a full corner either, as B is still left with a corner-sliding tactic such as 'c'.
then B 'a', I gain thickness which works well with my 4-4 on the left. Also, while Black's group is thick, it's also blocked from both sides (left and right) so its potential is very restricted. Furthermore I am left with the endgame tactic of b - f (e at
). So sacrificing is also very possible.
is a move that helps Black prevent from getting sealed in, but
is a move that painfully squeezes Black's stones into a clump.
is necessary to maintain access to the outside, but you can clearly see that if Black plays like that then White can save the three stones.
since the
exchange isn't necessary.