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Offline Gomoto
 Post subject: White to kill
Post #1 Posted: Tue Jan 14, 2020 4:24 pm 
Gosei

Posts: 1733
Location: Earth
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Was liked: 310
White to continue and kill the lower left:
Or not?
Click Here To Show Diagram Code
[go]$$W
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . O . . . . . |
$$ | . . O X X . . X . . . . O . O . . . . |
$$ | . . X O O X . . O . O . . O X O O . . |
$$ | . . O O . X . . . O . X X O X X O . . |
$$ | . . . . . . . . X O X . . X X X X O . |
$$ | . . O . . X . X . O O X X O . X O X . |
$$ | . . . . . . . . O O X X . . . X . . . |
$$ | . . . . . O X X O X . X . O O X . . . |
$$ | . . O O . O O X X . X . . . X . X . . |
$$ | . . O X O . . O X X X . O O X X . O . |
$$ | . . O X O X . O . O . X . X O X O . . |
$$ | . . O X X O . . . O O O X X O O O . O |
$$ | . X O X 1 . . O . X O O O X O . . O X |
$$ | . . X 2 . . . O X . X O X X O X O X X |
$$ | . . . X X X . O . . . X . X O . O O X |
$$ | . . . , O X O . . , . . X O O , O X X |
$$ | . X X O . O X X X X X . X X X X X X . |
$$ | . O O . . . O O O O . . X O X . . . . |
$$ | . . . . . . . . . . . O O . . . . . . |
$$ +---------------------------------------+[/go]
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Offline Uberdude
 Post subject: Re: White to kill
Post #2 Posted: Tue Jan 14, 2020 5:56 pm 
Judan

Posts: 6727
Location: Cambridge, UK
Liked others: 436
Was liked: 3720
Rank: UK 4 dan
KGS: Uberdude 4d
OGS: Uberdude 7d
3 is shape intuition and seems to kill. Black can make one eye in sente in centre with a-f. 7 is the key move, my first idea (actually before that was C4 before I noticed 4 sente) was hane A3 but that's a mistake as it allows a6 sente to make the second eye
Click Here To Show Diagram Code
[go]$$Wc
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . O . . . . . |
$$ | . . O X X . . X . . . . O . O . . . . |
$$ | . . X O O X . . O . O . . O X O O . . |
$$ | . . O O . X . . . O . X X O X X O . . |
$$ | . . . . . . . . X O X . . X X X X O . |
$$ | . . O . . X . X . O O X X O . X O X . |
$$ | . . . . . . . . O O X X . . . X . . . |
$$ | . . . . . O X X O X . X . O O X . . . |
$$ | . . O O . O O X X . X . . . X . X . . |
$$ | . . O X O . . O X X X . O O X X . O . |
$$ | . . O X O X . O . O . X . X O X O . . |
$$ | . . O X X O b . . O O O X X O O O . O |
$$ | . X O X 1 a . O . X O O O X O . . O X |
$$ | . 6 X 2 f . e O X . X O X X O X O X X |
$$ | . 3 . X X X c O . . . X . X O . O O X |
$$ | 7 . . 4 O X O d . , . . X O O , O X X |
$$ | . X X O 5 O X X X X X . X X X X X X . |
$$ | . O O . . . O O O O . . X O X . . . . |
$$ | . . . . . . . . . . . O O . . . . . . |
$$ +---------------------------------------+[/go]

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Offline Kirby
 Post subject: Re: White to kill
Post #3 Posted: Tue Jan 14, 2020 6:26 pm 
Honinbo

Posts: 9552
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KGS: Kirby
Tygem: 커비라고해
The sequence I thought of was similar to Uberdude’s, except a little bit worse: I had :w7: at b4 instead of a4. But it doesn’t work since black can use a6 on sente..

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be immersed

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Offline Bill Spight
 Post subject: Re: White to kill
Post #4 Posted: Tue Jan 14, 2020 6:58 pm 
Honinbo

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I did not see how Black to play could kill White. :oops: :lol:

_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.

This post by Bill Spight was liked by 2 people: Gomoto, xela
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Offline Bill Spight
 Post subject: Re: White to kill
Post #5 Posted: Tue Jan 14, 2020 7:02 pm 
Honinbo

Posts: 10905
Liked others: 3651
Was liked: 3374
Uberdude wrote:
3 is shape intuition and send to kill. Black can make eye in sente in centre with a-f. 7 is the key move, my first idea (actually before that was C4 before I noticed 4 sente) was hane A3 but that's a mistake as it allows a5 sente to make the second eye
Click Here To Show Diagram Code
[go]$$Wc
$$ +---------------------------------------+
$$ | . . . . . . . . . . . . . O . . . . . |
$$ | . . O X X . . X . . . . O . O . . . . |
$$ | . . X O O X . . O . O . . O X O O . . |
$$ | . . O O . X . . . O . X X O X X O . . |
$$ | . . . . . . . . X O X . . X X X X O . |
$$ | . . O . . X . X . O O X X O . X O X . |
$$ | . . . . . . . . O O X X . . . X . . . |
$$ | . . . . . O X X O X . X . O O X . . . |
$$ | . . O O . O O X X . X . . . X . X . . |
$$ | . . O X O . . O X X X . O O X X . O . |
$$ | . . O X O X . O . O . X . X O X O . . |
$$ | . . O X X O b . . O O O X X O O O . O |
$$ | . X O X 1 a . O . X O O O X O . . O X |
$$ | . 6 X 2 f . e O X . X O X X O X O X X |
$$ | . 3 . X X X c O . . . X . X O . O O X |
$$ | 7 . . 4 O X O d . , . . X O O , O X X |
$$ | . X X O 5 O X X X X X . X X X X X X . |
$$ | . O O . . . O O O O . . X O X . . . . |
$$ | . . . . . . . . . . . O O . . . . . . |
$$ +---------------------------------------+[/go]


Aficionados of Sonoda will note that :w7: has a diagonal relationship to :w3:. A-03 does not. :)

_________________
The Adkins Principle:
At some point, doesn't thinking have to go on?
— Winona Adkins

Visualize whirled peas.

Everything with love. Stay safe.

This post by Bill Spight was liked by: Gomoto
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