Honinbo Game 3

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oren
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Honinbo Game 3

Post by oren »

Ok who predicted move 8?

First day through lunch...



Iyama on Black. Ida on White.

It's always good when the commentator has to say "This is not a mistake in recording"
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Re: Honinbo Game 3

Post by Backpack »

I´ve never seen move 8 but it appears to be playable.
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Re: Honinbo Game 3

Post by Dusk Eagle »

I'm going to play this in every game I can at my Go club tonight just to get reactions, even if it isn't appropriate in my circumstances.

P.S. The game can be followed here: http://mimiaka.meteor.com/live-games
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Re: Honinbo Game 3

Post by Uberdude »

Nice to see Ida experimenting with an unusual move in a top game. My prior understanding of it is that it's a bit of a trick: if black attaches to try cutting it off (most people's instinct) then white wedges and without the ladder black is unhappy. It's covered in Lee Chang Ho's book 'How to handle hamete'. The easy answer is 3-3: then if white pulls back it's like you answered the normal slide at 3-3 and white pushed into the corner instead of extending on the side, which is usually inferior. Or white can wedge in and it reverts to attaching on the corner and hane. I suppose on this board the point is black wouldn't answer the slide at 3-3 but pincer or attach on the outside, but also if black did 3-3 white would surely extend on the side rather than push in the corner? I guess Ida researched it and liked that fancy 1st line move he got later that threatens a ko or corner life. Tenuki (with ladder threat) was a nice answer by Iyama.
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Re: Honinbo Game 3

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Re: Honinbo Game 3

Post by Pippen »

Uberdude wrote:The easy answer is 3-3: then if white pulls back it's like you answered the normal slide at 3-3 and white pushed into the corner instead of extending on the side, which is usually inferior. Or white can wedge in and it reverts to attaching on the corner and hane. I suppose on this board the point is black wouldn't answer the slide at 3-3 but pincer or attach on the outside, but also if black did 3-3 white would surely extend on the side rather than push in the corner? I guess Ida researched it and liked that fancy 1st line move he got later that threatens a ko or corner life. Tenuki (with ladder threat) was a nice answer by Iyama.


It was a light move white wouldn't answer, if e.g. black played at 3-3. Right from the beginning white probably had in mind to use that stone just as a bait trap to extend comfortably on the side while this very stone could still serve for some aji...and that's exactly what happened later in the game.

By the way: It seems the game is on pause. When will it be continued?
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Re: Honinbo Game 3

Post by Dusk Eagle »

It's 5:20am in Japan right now, so probably in a few hours from now.
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Re: Honinbo Game 3

Post by Bantari »

Backpack wrote:I´ve never seen move 8 but it appears to be playable.

Well... Obviously. ;)
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Re: Honinbo Game 3

Post by lemmata »

Ida's thoughts were published in an interview on Oro. He shows some of the variations he had in mind as well as his planned response to the 3-3 point. So we have it from the horse's mouth.
Click Here To Show Diagram Code
[go]$$B Ida's move
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X . . . Q . |
$$ | . . . O . . . . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , X . . |
$$ | . . . O . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Why did he play this move? He wanted to avoid a common joseki variation that he did not feel like playing.
Click Here To Show Diagram Code
[go]$$B What he wanted to avoid
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . 1 . . . . . |
$$ | . . . O . . . . . , . . . . . X . 2 . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 3 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , X . . |
$$ | . . . O . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

The usual recommendation for black is to play the 3-3 point. Ida had a planned response to this.
Click Here To Show Diagram Code
[go]$$B White's pincer at b is no longer threatening because white can play at a and get very nice shape. Black is not as active on the outside as in the usual joseki.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X . . 1 O . |
$$ | . . . O . . . . . , . . . . . X a . . |
$$ | . . . . . . . . . . . . . . . . . 2 . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . b . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , X . . |
$$ | . . . O . . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Ida feared that Iyama would tenuki, which he did.
Click Here To Show Diagram Code
[go]$$B After some forcing moves...
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X . . . O . |
$$ | . . . O . . . . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 2 , 3 . . . . , . . . . . , X . . |
$$ | . . . O 4 . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Click Here To Show Diagram Code
[go]$$B Ladder now works for black
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X . . 4 O . |
$$ | . . . O . . . . . , . . . . . X 2 1 8 |
$$ | . . . . . . . . . . . . . . . 5 3 6 . |
$$ | . . . . . . . . . . . . . . . . O 7 . |
$$ | . . . . . . . . . . . . . T . . 9 . . |
$$ | . . . . . . . . . . . . . . . T . . . |
$$ | . . . . . . . . . . . T . . . . . . . |
$$ | . . . , . . . . . , . . . T . , . . . |
$$ | . . . . . . . . . T . . . . . . . . . |
$$ | . . . . . . . . . . . T . . . . . . . |
$$ | . . . . . . . T . . . . . . . . . . . |
$$ | . . X . . . . . . T . . . . . . . . . |
$$ | . . . . . T . . . . . . . . . . . . . |
$$ | . . O , X . . T . , . . . . . , X . . |
$$ | . . . P O . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

Click Here To Show Diagram Code
[go]$$W Ida's preferred response to the marked stone.
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . X . . . O . |
$$ | . . . O . . . . . , . . . . . X 2 Z . |
$$ | . . . . . . . . . . . . . . . . . 1 . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 3 . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O , X . . . . , . . . . . , X . . |
$$ | . . . O O . . . . . . . . . X . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
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