For lessons, as well as threads about specific moves, and anything else worth studying.
jts
Oza
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by jts » Wed Jul 25, 2012 7:01 pm
Black to move. Is the group on the bottom alive?
$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X . X O X O O . . . . . . . |
$$ | . . O . O . . . X X X X O . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------
Click Here To Show Diagram Code [go]$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X . X O X O O . . . . . . . |
$$ | . . O . O . . . X X X X O . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Dusk Eagle
Gosei
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by Dusk Eagle » Wed Jul 25, 2012 7:10 pm
You're evil.
We don't know who we are; we don't know where we are.
Each of us woke up one moment and here we were in the darkness.
We're nameless things with no memory; no knowledge of what went before,
No understanding of what is now, no knowledge of what will be.
Boidhre
Oza
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by Boidhre » Wed Jul 25, 2012 8:36 pm
speedchase
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by speedchase » Wed Jul 25, 2012 9:56 pm
how does white kill
$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X . X O X O O . . . . . . . |
$$ | . . O . O 1 . . X X X X O . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------
Click Here To Show Diagram Code [go]$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X . X O X O O . . . . . . . |
$$ | . . O . O 1 . . X X X X O . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Boidhre
Oza
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Post
by Boidhre » Wed Jul 25, 2012 10:25 pm
I couldn't find a good answer to:
$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X . X O X O O . . . . . . . |
$$ | . . O . O 1 2 . X X X X O . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------
Click Here To Show Diagram Code [go]$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X . X O X O O . . . . . . . |
$$ | . . O . O 1 2 . X X X X O . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
I'd be delighted to be shown a refutation.
Edit:
I think I see one:
$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X . X O X O O . . . . . . . |
$$ | . . O . O 1 2 . X X X X O . . . . . . |
$$ | . . . . . 5 3 4 . . . . . . . . . . . |
$$ ---------------------------------------
Click Here To Show Diagram Code [go]$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X . X O X O O . . . . . . . |
$$ | . . O . O 1 2 . X X X X O . . . . . . |
$$ | . . . . . 5 3 4 . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Never mind:
$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X 7 X O X O O . . . . . . . |
$$ | . . O . O 1 2 6 X X X X O . . . . . . |
$$ | . . . . . 5 3 4 0 . 9 8 . . . . . . . |
$$ ---------------------------------------
Click Here To Show Diagram Code [go]$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X 7 X O X O O . . . . . . . |
$$ | . . O . O 1 2 6 X X X X O . . . . . . |
$$ | . . . . . 5 3 4 0 . 9 8 . . . . . . . |
$$ ---------------------------------------[/go]
$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X . X O X O O . . . . . . . |
$$ | . . O . O X . 2 X X X X O . . . . . . |
$$ | . . . . . X X . . 1 X O . . . . . . . |
$$ ---------------------------------------
Click Here To Show Diagram Code [go]$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X . X O X O O . . . . . . . |
$$ | . . O . O X . 2 X X X X O . . . . . . |
$$ | . . . . . X X . . 1 X O . . . . . . . |
$$ ---------------------------------------[/go]
Last edited by
Boidhre on Wed Jul 25, 2012 10:38 pm, edited 1 time in total.
speedchase
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by speedchase » Wed Jul 25, 2012 10:35 pm
Boidhre wrote:
Edit:
I think I see one:
$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X . X O X O O . . . . . . . |
$$ | . . O . O 1 2 . X X X X O . . . . . . |
$$ | . . . . . 5 3 4 . . . . . . . . . . . |
$$ ---------------------------------------
Click Here To Show Diagram Code [go]$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X . X O X O O . . . . . . . |
$$ | . . O . O 1 2 . X X X X O . . . . . . |
$$ | . . . . . 5 3 4 . . . . . . . . . . . |
$$ ---------------------------------------[/go]
that is what I was thinking
Boidhre
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by Boidhre » Wed Jul 25, 2012 10:39 pm
speedchase
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by speedchase » Wed Jul 25, 2012 10:42 pm
Boidhre
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by Boidhre » Wed Jul 25, 2012 10:47 pm
$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X 7 X O X O O . . . . . . . |
$$ | . . O . O 1 2 6 X X X X O . . . . . . |
$$ | . . . . . 5 3 4 9 . . 8 . . . . . . . |
$$ ---------------------------------------
Click Here To Show Diagram Code [go]$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X 7 X O X O O . . . . . . . |
$$ | . . O . O 1 2 6 X X X X O . . . . . . |
$$ | . . . . . 5 3 4 9 . . 8 . . . . . . . |
$$ ---------------------------------------[/go]
Black lives?
Edit: I guess so.
speedchase
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by speedchase » Wed Jul 25, 2012 10:53 pm
ez4u
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by ez4u » Thu Jul 26, 2012 2:59 am
@Herman - What happens if B cuts at H5 instead of L4 in yours?
Dave Sigaty
"Short-lived are both the praiser and the praised, and rememberer and the remembered..."
- Marcus Aurelius; Meditations, VIII 21
HermanHiddema
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by HermanHiddema » Thu Jul 26, 2012 3:40 am
ez4u wrote: @Herman - What happens if B cuts at H5 instead of L4 in yours?
H6, then L4 if black extends and it doesn't look good?
But really, you would have to ask:
Click to show
ez4u
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by ez4u » Thu Jul 26, 2012 4:31 am
Ha! Ha! When you posted your variation I thought, "Wow! This is as bad as the 'Big Fight' game". But I never considered that it might actually be so.
@jts - You rat!
Dave Sigaty
"Short-lived are both the praiser and the praised, and rememberer and the remembered..."
- Marcus Aurelius; Meditations, VIII 21
speedchase
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by speedchase » Thu Jul 26, 2012 8:01 am
$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X . X O X O O . . . . . . . |
$$ | . . O . O 1 3 2 X X X X O . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------
Click Here To Show Diagram Code [go]$$B 19x19 board
$$ | . . . , . . . . . , . . . . . , O X . |
$$ | . . X . . . . . . . . . . . O . . . . |
$$ | . . . . . . . . . . . . . . O X X . . |
$$ | . . . . . . . . . . . . . O X . X . . |
$$ | . . . X X . . . . . . . . O . X . . . |
$$ | . . . X O O O . . . . . . . . . . . . |
$$ | . . X O . . X O O O . . . . O , O . . |
$$ | . . X O . X . X O X O O . . . . . . . |
$$ | . . O . O 1 3 2 X X X X O . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Black at least has this ko variation right? he also has the local threats on the outside