Yamashita Keigo wins 65th Honinbo

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Yamashita Keigo wins 65th Honinbo

Post by apetresc »

White (Yamashita) took the 5th game of the Honinbo match a few minutes ago to win the title 4-1 against defender Hane Naoki. Here is the complete game:

The road to wisdom? Well, it's plain, and simple to express: Err, and err, and err again; but less, and less, and less!
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Re: Yamashita Keigo wins 65th Honinbo

Post by apetresc »

Here are two particularly interesting moments in the endgame (which surprised at least the sizeable IGS audience).

[go]$$Wc Reduction tesuji? What happens after H12?
$$ +-------------------------------------+
$$ |. . . . . . . . . . . . . . . . . . .|
$$ |. X X . . . . . . . . . . . . . X X .|
$$ |. O X O . . . . . . . . . X . . X O .|
$$ |. . O X X . X . . X . . . . . X O O .|
$$ |. . O O X . . X . . . . . . . X X O .|
$$ |. . X O O . O X . . . . . . . . X X O|
$$ |. . . . O . O O X . . . . X O . O O .|
$$ |. . . . . X . . . . . . . X X O O X .|
$$ |. . . O O X . . @ . X . X . . O X O O|
$$ |. . . , . O X X . , X O . O O O X X .|
$$ |. . . . . . O X . . . . O . O X X . .|
$$ |. . . . . O . O . X . O . O X O O X .|
$$ |. . . . . X O . O X . . O X X . . . .|
$$ |. . O O O O . O X X . . . . . . X . .|
$$ |. . X . . . O X X O X . . . . O X . .|
$$ |. . O O . X . X O O . O . O . O X . .|
$$ |. . X . O X . . X O O . . . O X X . .|
$$ |. . . . O . . . X . . . . . . O . . .|
$$ |. . . . . . . . . . . . . . . . . . .|
$$ +-------------------------------------+[/go]




[go]$$Wc Mistake? What is black trying to accomplish here?
$$ +-------------------------------------+
$$ |. X . . . . . . . . . . . . . . . . .|
$$ |O X X O X . . . . . . . . . . . X X .|
$$ |. O X O . . . . . . . . . X . . X O X|
$$ |. O O X X . X . . X . . . . . X O O .|
$$ |. . O O X . . X . . . . . X . X X O O|
$$ |. . X O O . O X . . . . . . O . X X O|
$$ |. . . . O . O O X X . . . X O . O O .|
$$ |. . . . . X . . O . . . . X X O O X .|
$$ |. . . O O X X O O . X . X . . O X O O|
$$ |. . . , . O X X X , X O . O O O X X O|
$$ |. . . . . . O X O X X . O . O X X X .|
$$ |. . . . . O . O O X . O . O X O O X .|
$$ |. . . . . X O . O X . . O X X X . . .|
$$ |. . O O O O . O X X . O . O X . X . .|
$$ |. . X . . . O X X O X . # . O O X . .|
$$ |. . O O . X . X O O . O . O . O X . .|
$$ |. . X . O X X . X O O . . . O X X . .|
$$ |. . . . O X O . X . . O . . O O X . .|
$$ |. . . . . O . . X . X X O . . . . . .|
$$ +-------------------------------------+[/go]
The road to wisdom? Well, it's plain, and simple to express: Err, and err, and err again; but less, and less, and less!
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Re: Yamashita Keigo wins 65th Honinbo

Post by Jonas »

[go]$$Bc Reduction tesuji? What happens after H12?
$$ +-------------------------------------+
$$ |. . . . . . . . . . . . . . . . . . .|
$$ |. X X . . . . . . . . . . . . . X X .|
$$ |. O X O . . . . . . . . . X . . X O .|
$$ |. . O X X . X . . X . . . . . X O O .|
$$ |. . O O X . . X . . . . . . . X X O .|
$$ |. . X O O . O X . . . . . . . . X X O|
$$ |. . . . O . O O X . . . . X O . O O .|
$$ |. . . . . X . 1 0 . . b . X X O O X .|
$$ |. . . O O X . a @ 9 X . X . . O X O O|
$$ |. . . , . O X X 3 8 X O . O O O X X .|
$$ |. . . . . . O X 2 4 5 . O . O X X . .|
$$ |. . . . . O . O 6 X 7 O . O X O O X .|
$$ |. . . . . X O . O X . . O X X . . . .|
$$ |. . O O O O . O X X . . . . . . X . .|
$$ |. . X . . . O X X O X . . . . O X . .|
$$ |. . O O . X . X O O . O . O . O X . .|
$$ |. . X . O X . . X O O . . . O X X . .|
$$ |. . . . O . . . X . . . . . . O . . .|
$$ |. . . . . . . . . . . . . . . . . . .|
$$ +-------------------------------------+[/go]

Wow, the white move is simply amazing, I believe Black cant play H12 because of the shown variation above, if Black ladders white at 'a' White can play 'b' as a ladderbreaker and connect out.


[go]$$Wc Mistake? What is black trying to accomplish here?
$$ +-------------------------------------+
$$ |. X . . . . . . . . . . . . . . . . .|
$$ |O X X O X . . . . . . . . . . . X X .|
$$ |. O X O . . . . . . . . . X . . X O X|
$$ |. O O X X . X . . X . . . . . X O O .|
$$ |. . O O X . . X . . . . . X . X X O O|
$$ |. . X O O . O X . . . . . . O . X X O|
$$ |. . . . O . O O X X . . . X O . O O .|
$$ |. . . . . X . . O . . . . X X O O X .|
$$ |. . . O O X X O O . X . X . . O X O O|
$$ |. . . , . O X X X , X O . O O O X X O|
$$ |. . . . . . O X O X X . O . O X X X .|
$$ |. . . . . O . O O X . O . O X O O X .|
$$ |. . . . . X O . O X . . O X X X . . .|
$$ |. . O O O O . O X X 4 O . O X a X . .|
$$ |. . X . . . O X X O X 1 # 2 O O X . .|
$$ |. . O O . X . X O O . O 3 O . O X . .|
$$ |. . X . O X X . X O O . . . O X X . .|
$$ |. . . . O X O . X . . O . . O O X . .|
$$ |. . . . . O . . X . X X O . . . . . .|
$$ +-------------------------------------+[/go]

Hmmm now White cant atari at 'a', otherwise I dont see a reason to play the marked stone...
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Re: Yamashita Keigo wins 65th Honinbo

Post by Magicwand »

Jonas: close..but i think your sequence is wrong..because black can atari from behind ang giveup two stone.
below is correct sequence i think...
Click Here To Show Diagram Code
[go]$$Bc Reduction tesuji? What happens after H12?
$$ +-------------------------------------+
$$ |. . . . . . . . . . . . . . . . . . .|
$$ |. X X . . . . . . . . . . . . . X X .|
$$ |. O X O . . . . . . . . . X . . X O .|
$$ |. . O X X . X . . X . . . . . X O O .|
$$ |. . O O X . . X . . . . . . . X X O .|
$$ |. . X O O . O X 7 . . . . . . . X X O|
$$ |. . . . O . O O X 6 . . . X O . O O .|
$$ |. . . . . X 5 1 4 . . . . X X O O X .|
$$ |. . . O O X 3 2 @ . X . X . . O X O O|
$$ |. . . , . O X X 9 . X O . O O O X X .|
$$ |. . . . . . O X 8 0 . . O . O X X . .|
$$ |. . . . . O . O . X . O . O X O O X .|
$$ |. . . . . X O . O X . . O X X . . . .|
$$ |. . O O O O . O X X . . . . . . X . .|
$$ |. . X . . . O X X O X . . . . O X . .|
$$ |. . O O . X . X O O . O . O . O X . .|
$$ |. . X . O X . . X O O . . . O X X . .|
$$ |. . . . O . . . X . . . . . . O . . .|
$$ |. . . . . . . . . . . . . . . . . . .|
$$ +-------------------------------------+[/go]
of if he plays 2 differently ...see below.
Click Here To Show Diagram Code
[go]$$Bc Reduction tesuji? What happens after H12?
$$ +-------------------------------------+
$$ |. . . . . . . . . . . . . . . . . . .|
$$ |. X X . . . . . . . . . . . . . X X .|
$$ |. O X O . . . . . . . . . X . . X O .|
$$ |. . O X X . X . . X . . . . . X O O .|
$$ |. . O O X . . X . . . . . . . X X O .|
$$ |. . X O O . O X . . . . . . . . X X O|
$$ |. . . . O . O O X . . . . X O . O O .|
$$ |. . . . . X 3 1 . . . . . X X O O X .|
$$ |. . . O O X . 2 @ . X . X . . O X O O|
$$ |. . . , . O X X 5 0 X O . O O O X X .|
$$ |. . . . . . O X 4 6 7 . O . O X X . .|
$$ |. . . . . O . O 8 X 9 O . O X O O X .|
$$ |. . . . . X O . O X . . O X X . . . .|
$$ |. . O O O O . O X X . . . . . . X . .|
$$ |. . X . . . O X X O X . . . . O X . .|
$$ |. . O O . X . X O O . O . O . O X . .|
$$ |. . X . O X . . X O O . . . O X X . .|
$$ |. . . . O . . . X . . . . . . O . . .|
$$ |. . . . . . . . . . . . . . . . . . .|
$$ +-------------------------------------+[/go]
for second diag. i can see that he stopped white's sente move on two places...but he also lost points so i dont understand how that can be tesuji. beyond the scope of my brain.
Last edited by Magicwand on Tue Jun 29, 2010 6:02 am, edited 1 time in total.
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Re: Yamashita Keigo wins 65th Honinbo

Post by Jonas »

Oh, I missed the atari with White 10 in your last diagram and thought this couldnt be the solution ;-)
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