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Offline xed_over
 Post subject: tesuji/tusmego from professional games
Post #1 Posted: Sat May 18, 2013 4:55 pm 
Oza

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Someone came into the Go center today and shared this tsumego/tesuji and story he got off a chinese website somewhere

from the 19th Fujitsu, Cho Chikun, playing white, resigned here because he couldn't see how to rescue his stones, upon which his opponent, Lee Sedol immediately showed him the move to save the white stones.

Can you find it?

Click Here To Show Diagram Code
[go]$$B white to save his stones
$$ +---------------------------------------+
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . X O . . . O X X O X . . . . . . . |
$$ | . X O X X . O . O O X O O O X X . . . |
$$ | . X O , . . . O . O X X . X O , X . . |
$$ | . O O . . . . . O X X . . X . . . . . |
$$ | . . O O . . . . O X . . . . . . . . . |
$$ | . X O X O O O O X O O . . . X . . . . |
$$ | . O X X X O X X X X O . . O X . . . . |
$$ | . O X . W X . . . . . . . O X . . . . |
$$ | . O X , W X . . . X O . . O O X . . . |
$$ | . X X . W X . . . X O . . O X . . . . |
$$ | . . W . W X . . . X O . . . . . X . . |
$$ | . X . W X . . . . . . . . . . . . . . |
$$ | . . . W X . X . . . . . . . . . O . . |
$$ | . . X X O O . . . . . . . . . . X X . |
$$ | . . O O . . . . . , . . . . X X X O . |
$$ | . . . O . . . . . . . . . O . O O O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]
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Offline Uberdude
 Post subject: Re: tesuji/tusmego from professional games
Post #2 Posted: Sat May 18, 2013 5:06 pm 
Judan

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It's 1am, but... Seki, which counts as saving right?

Click Here To Show Diagram Code
[go]$$W white to save his stones
$$ +---------------------------------------+
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . X O . . . O X X O X . . . . . . . |
$$ | . X O X X . O . O O X O O O X X . . . |
$$ | . X O , . . . O . O X X . X O , X . . |
$$ | . O O . . . . . O X X . . X . . . . . |
$$ | . . O O . . . . O X . . . . . . . . . |
$$ | . X O X O O O O X O O . . . X . . . . |
$$ | . O X X X O X X X X O . . O X . . . . |
$$ | . O X . W X . . . . . . . O X . . . . |
$$ | . O X , W X . . . X O . . O O X . . . |
$$ | . X X . W X . . . X O . . O X . . . . |
$$ | . . W 1 W X . . . X O . . . . . X . . |
$$ | . X . W X . . . . . . . . . . . . . . |
$$ | . . . W X . X . . . . . . . . . O . . |
$$ | . . X X O O . . . . . . . . . . X X . |
$$ | . . O O . . . . . , . . . . X X X O . |
$$ | . . . O . . . . . . . . . O . O O O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


Hmm do I need to push first, and then have to read b throw in...
Seems if we push first and b throws in then capture then the clamp works as b taking 2 stones we can recapture, and if he doesn't throw in then we connect.


Last edited by Uberdude on Sat May 18, 2013 5:13 pm, edited 2 times in total.
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Offline Splatted
 Post subject: Re: tesuji/tusmego from professional games
Post #3 Posted: Sat May 18, 2013 5:10 pm 
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This seems too easy but I'll bite. What's wrong with

Click Here To Show Diagram Code
[go]$$W white to save his stones
$$ +---------------------------------------+
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . X O . . . O X X O X . . . . . . . |
$$ | . X O X X . O . O O X O O O X X . . . |
$$ | . X O , . . . O . O X X . X O , X . . |
$$ | . O O . . . . . O X X . . X . . . . . |
$$ | . . O O . . . . O X . . . . . . . . . |
$$ | . X O X O O O O X O O . . . X . . . . |
$$ | . O X X X O X X X X O . . O X . . . . |
$$ | . O X . W X . . . . . . . O X . . . . |
$$ | . O X , W X . . . X O . . O O X . . . |
$$ | . X X . W X . . . X O . . O X . . . . |
$$ | 2 1 W . W X . . . X O . . . . . X . . |
$$ | . X . W X . . . . . . . . . . . . . . |
$$ | . . . W X . X . . . . . . . . . O . . |
$$ | . 3 X X O O . . . . . . . . . . X X . |
$$ | . . O O . . . . . , . . . . X X X O . |
$$ | . . . O . . . . . . . . . O . O O O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


or

Click Here To Show Diagram Code
[go]$$W white to save his stones
$$ +---------------------------------------+
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . X O . . . O X X O X . . . . . . . |
$$ | . X O X X . O . O O X O O O X X . . . |
$$ | . X O , . . . O . O X X . X O , X . . |
$$ | . O O . . . . . O X X . . X . . . . . |
$$ | . . O O . . . . O X . . . . . . . . . |
$$ | . X O X O O O O X O O . . . X . . . . |
$$ | . O X X X O X X X X O . . O X . . . . |
$$ | . O X . W X . . . . . . . O X . . . . |
$$ | . O X , W X . . . X O . . O O X . . . |
$$ | 4 X X . W X . . . X O . . O X . . . . |
$$ | 3 1 W . W X . . . X O . . . . . X . . |
$$ | 2 X . W X . . . . . . . . . . . . . . |
$$ | . . . W X . X . . . . . . . . . O . . |
$$ | . 5 X X O O . . . . . . . . . . X X . |
$$ | . . O O . . . . . , . . . . X X X O . |
$$ | . . . O . . . . . . . . . O . O O O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


etc
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Offline Kanin
 Post subject: Re: tesuji/tusmego from professional games
Post #4 Posted: Sat May 18, 2013 5:20 pm 
Dies in gote

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Liked others: 34
Was liked: 21
Rank: EGF 4d
DGS: XiaoTuzi
Universal go server handle: Kanin
Click Here To Show Diagram Code
[go]$$W +---------------------------------------+
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . X O . . . O X X O X . . . . . . . |
$$ | . X O X X . O . O O X O O O X X . . . |
$$ | . X O , . . . O . O X X . X O , X . . |
$$ | . O O . . . . . O X X . . X . . . . . |
$$ | . . O O . . . . O X . . . . . . . . . |
$$ | . X O X O O O O X O O . . . X . . . . |
$$ | . O X X X O X X X X O . . O X . . . . |
$$ | . O X . W X . . . . . . . O X . . . . |
$$ | . O X , W X . . . X O . . O O X . . . |
$$ | . X X . W X . . . X O . . O X . . . . |
$$ | . . W . W X . . . X O . . . . . X . . |
$$ | 1 X . W X . . . . . . . . . . . . . . |
$$ | . . . W X . X . . . . . . . . . O . . |
$$ | . . X X O O . . . . . . . . . . X X . |
$$ | . . O O . . . . . , . . . . X X X O . |
$$ | . . . O . . . . . . . . . O . O O O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

This post by Kanin was liked by: xed_over
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Offline amnal
 Post subject: Re: tesuji/tusmego from professional games
Post #5 Posted: Sat May 18, 2013 5:30 pm 
Lives in gote

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Splatted wrote:
This seems too easy but I'll bite. What's wrong with

Click Here To Show Diagram Code
[go]$$W white to save his stones
$$ +---------------------------------------+
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . X O . . . O X X O X . . . . . . . |
$$ | . X O X X . O . O O X O O O X X . . . |
$$ | . X O , . . . O . O X X . X O , X . . |
$$ | . O O . . . . . O X X . . X . . . . . |
$$ | . . O O . . . . O X . . . . . . . . . |
$$ | . X O X O O O O X O O . . . X . . . . |
$$ | . O X X X O X X X X O . . O X . . . . |
$$ | . O X . W X . . . . . . . O X . . . . |
$$ | . O X , W X . . . X O . . O O X . . . |
$$ | . X X . W X . . . X O . . O X . . . . |
$$ | 2 1 W . W X . . . X O . . . . . X . . |
$$ | . X . W X . . . . . . . . . . . . . . |
$$ | . . . W X . X . . . . . . . . . O . . |
$$ | . 3 X X O O . . . . . . . . . . X X . |
$$ | . . O O . . . . . , . . . . X X X O . |
$$ | . . . O . . . . . . . . . O . O O O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


Black 4 below causes problems...white can get a couple of stones, but black gets the important ones. Or if white connects, it seems black wins the capturing race due to white's shortage of liberties in the a and b areas.

Click Here To Show Diagram Code
[go]$$W white to save his stones
$$ +---------------------------------------+
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . X O . . . O X X O X . . . . . . . |
$$ | . X O X X . O . O O X O O O X X . . . |
$$ | . X O , . . . O . O X X . X O , X . . |
$$ | . O O . . . . . O X X . . X . . . . . |
$$ | . . O O . . . . O X . . . . . . . . . |
$$ | . X O X O O O O X O O . . . X . . . . |
$$ | . O X X X O X X X X O . . O X . . . . |
$$ | . O X . W X . . . . . . . O X . . . . |
$$ | a O X , W X . . . X O . . O O X . . . |
$$ | . X X . W X . . . X O . . O X . . . . |
$$ | 2 1 W . W X . . . X O . . . . . X . . |
$$ | . X 4 W X . . . . . . . . . . . . . . |
$$ | . . . W X . X . . . . . . . . . O . . |
$$ | . 3 X X O O . . . . . . . . . . X X . |
$$ | . b O O . . . . . , . . . . X X X O . |
$$ | . . . O . . . . . . . . . O . O O O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

This post by amnal was liked by: Splatted
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Offline illluck
 Post subject: Re: tesuji/tusmego from professional games
Post #6 Posted: Sat May 18, 2013 6:35 pm 
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Hehe, this was posted on baidu tieba. Very neat tesuji.
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Offline logan
 Post subject: Re: tesuji/tusmego from professional games
Post #7 Posted: Sat May 18, 2013 8:27 pm 
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This game is covered in Go World Iss. 108 where it says that the move was discovered by Tsuruyama Atushi 6-dan.

Anyway, even if Cho escapes he would still be behind on the board.

I'm more surprised that Cho may not have seen this move. It's an uncommon move, but Cho's reading is famously thorough.

Also, fun fact: This was Cho & Yi's first official game against each other.

Continuation:
Click Here To Show Diagram Code
[go]$$Wm1
$$ +---------------------------------------+
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . X O . . . O X X O X . . . . . . . |
$$ | . X O X X . O . O O X O O O X X . . . |
$$ | . X O , . . . O . O X X . X O , X . . |
$$ | . O O . . . . . O X X . . X . . . . . |
$$ | . . O O . . . . O X . . . . . . . . . |
$$ | . X O X O O O O X O O . . . X . . . . |
$$ | . O X X X O X X X X O . . O X . . . . |
$$ | . O X . O X . . . . . . . O X . . . . |
$$ | . O X , O X . . . X O . . O O X . . . |
$$ | 9 X X 7 O X . . . X O . . O X . . . . |
$$ | 5 3 O 6 O X . . . X O . . . . . X . . |
$$ | 1 X 0 O X . . . . . . . . . . . . . . |
$$ | 4 . 8 O X . X . . . . . . . . . O . . |
$$ | . 2 X X O O . . . . . . . . . . X X . |
$$ | . . O O . . . . . , . . . . X X X O . |
$$ | . . . O . . . . . . . . . O . O O O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


Click Here To Show Diagram Code
[go]$$Wm11 White is still behind
$$ +---------------------------------------+
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . X O . . . O X X O X . . . . . . . |
$$ | . X O X X . O . O O X O O O X X . . . |
$$ | . X O , . . . O . O X X . X O , X . . |
$$ | . O O . . . . . O X X . . X . . . . . |
$$ | . . O O . . . . O X . . . . . . . . . |
$$ | . X O X O O O O X O O . . . X . . . . |
$$ | . O X X X O X X X X O . . O X . . . . |
$$ | . O X . O X . . . . . . . O X . . . . |
$$ | . O X , O X . . . X O . . O O X . . . |
$$ | O X X O O X . . . X O . . O X . . . . |
$$ | O O O 1 O X . . . X O . . . . . X . . |
$$ | X X X O X . . . . . . . . . . . . . . |
$$ | X . X O X . X 6 . . . . . . . . O . . |
$$ | . X X X O O 5 . . . . . . . . . X X . |
$$ | 4 2 O O . . . . 7 , . . . . X X X O . |
$$ | . 3 . O . . . . . . . . . O . O O O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]

This post by logan was liked by: xed_over
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Offline Bill Spight
 Post subject: Re: tesuji/tusmego from professional games
Post #8 Posted: Sat May 18, 2013 8:31 pm 
Honinbo

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I guess something is wrong with this. Too easy, eh?

Click Here To Show Diagram Code
[go]$$Wc white to save his stones
$$ +---------------------------------------+
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . X O . . . O X X O X . . . . . . . |
$$ | . X O X X . O . O O X O O O X X . . . |
$$ | . X O , . . . O . O X X . X O , X . . |
$$ | . O O . . . . . O X X . . X . . . . . |
$$ | . . O O . . . . O X . . . . . . . . . |
$$ | . X O X O O O O X O O . . . X . . . . |
$$ | . O X X X O X X X X O . . O X . . . . |
$$ | . O X . W X . . . . . . . O X . . . . |
$$ | . O X , W X . . . X O . . O O X . . . |
$$ | . X X . W X . . . X O . . O X . . . . |
$$ | 0 9 W . W X . . . X O . . . . . X . . |
$$ | 8 X . W X . . . . . . . . . . . . . . |
$$ | 4 3 1 W X . X . . . . . . . . . O . . |
$$ | 6 2 X X O O . . . . . . . . . . X X . |
$$ | 7 5 O O . . . . . , . . . . X X X O . |
$$ | . . . O . . . . . . . . . O . O O O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


Click Here To Show Diagram Code
[go]$$Wcm11 white to save his stones (cont.)
$$ +---------------------------------------+
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . X O . . . O X X O X . . . . . . . |
$$ | . X O X X . O . O O X O O O X X . . . |
$$ | . X O , . . . O . O X X . X O , X . . |
$$ | . O O . . . . . O X X . . X . . . . . |
$$ | . . O O . . . . O X . . . . . . . . . |
$$ | 3 X O X O O O O X O O . . . X . . . . |
$$ | . O X X X O X X X X O . . O X . . . . |
$$ | . O X . W X . . . . . . . O X . . . . |
$$ | 1 O X , W X . . . X O . . O O X . . . |
$$ | 2 X X . W X . . . X O . . O X . . . . |
$$ | X O W . W X . . . X O . . . . . X . . |
$$ | X X . W X . . . . . . . . . . . . . . |
$$ | X O O W X . X . . . . . . . . . O . . |
$$ | X X X X O O . . . . . . . . . . X X . |
$$ | O O O O . . . . . , . . . . X X X O . |
$$ | . . . O . . . . . . . . . O . O O O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


Click Here To Show Diagram Code
[go]$$Bcm10 Variation
$$ +---------------------------------------+
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . X O . . . O X X O X . . . . . . . |
$$ | . X O X X . O . O O X O O O X X . . . |
$$ | . X O , . . . O . O X X . X O , X . . |
$$ | 4 O O . . . . . O X X . . X . . . . . |
$$ | 3 6 O O . . . . O X . . . . . . . . . |
$$ | . X O X O O O O X O O . . . X . . . . |
$$ | 5 O X X X O X X X X O . . O X . . . . |
$$ | 7 O X . W X . . . . . . . O X . . . . |
$$ | 1 O X , W X . . . X O . . O O X . . . |
$$ | . X X . W X . . . X O . . O X . . . . |
$$ | 2 O W . W X . . . X O . . . . . X . . |
$$ | X X . W X . . . . . . . . . . . . . . |
$$ | X O O W X . X . . . . . . . . . O . . |
$$ | X X X X O O . . . . . . . . . . X X . |
$$ | O O O O . . . . . . . . . O . O O O . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ +---------------------------------------+[/go]


:w18: = nakade

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Offline Splatted
 Post subject: Re: tesuji/tusmego from professional games
Post #9 Posted: Sun May 19, 2013 3:58 am 
Lives in sente

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amnal wrote:

Black 4 below causes problems...


I guess I'm not quite a 9p yet. :study:
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