Board Problem #1

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Wessik
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Board Problem #1

Post by Wessik »

Click Here To Show Diagram Code
[go]$$Bc
$$---------------------
$$|...................|
$$|...................|
$$|...XO......XXX.....|
$$|..X.O....O.OOO.X...|
$$|...................|
$$|...X...............|
$$|...................|
$$|..O................|
$$|...................|
$$|..OX...........1...|
$$|..OX...............|
$$|..OX...............|
$$|..OX...............|
$$|...................|
$$|..X.XO.............|
$$|.....O.X.......O...|
$$|...O..OX....X......|
$$|...................|
$$|...................|
$$---------------------[/go]


White to Play.
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Solomon
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Re: Board Problem #1

Post by Solomon »

I would play at :w1: . Then, after Black protects, the points 'a' and 'b' look appetizing.
Click Here To Show Diagram Code
[go]$$Wc
$$---------------------
$$|...................|
$$|...................|
$$|...XO.....1XXX.....|
$$|..X.O....O.OOO.X...|
$$|..b................|
$$|...X...............|
$$|...................|
$$|..O................|
$$|...a...............|
$$|..OX...........X...|
$$|..OX...............|
$$|..OX...............|
$$|..OX...............|
$$|...................|
$$|..X.XO.............|
$$|.....O.X.......O...|
$$|...O..OX....X......|
$$|...................|
$$|...................|
$$---------------------[/go]
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Magicwand
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Re: Board Problem #1

Post by Magicwand »

Araban wrote:I would play at :w1: . Then, after Black protects, the points 'a' and 'b' look appetizing.
Click Here To Show Diagram Code
[go]$$Wc
$$---------------------
$$|...................|
$$|...................|
$$|...XO.....1XXX.....|
$$|..X.O....O.OOO.X...|
$$|..b................|
$$|...X...............|
$$|...................|
$$|..O................|
$$|...a...............|
$$|..OX...........X...|
$$|..OX...............|
$$|..OX...............|
$$|..OX...............|
$$|...................|
$$|..X.XO.............|
$$|.....O.X.......O...|
$$|...O..OX....X......|
$$|...................|
$$|...................|
$$---------------------[/go]

i agree with above but a and b is not urgent.
see below sequence i expect. i think white need to play 5 to stop invasion at a
Click Here To Show Diagram Code
[go]$$Wc
$$---------------------
$$|...................|
$$|...................|
$$|...XO...a.1XXX.....|
$$|..X.O....O.OOO2X...|
$$|...................|
$$|...X.5.............|
$$|...............4...|
$$|..O................|
$$|...................|
$$|..OX...........X...|
$$|..OX...............|
$$|..OX...............|
$$|..OX...............|
$$|................3..|
$$|..X.XO.............|
$$|.....O.X.......O...|
$$|...O..OX....X......|
$$|...................|
$$|...................|
$$---------------------[/go]
"The more we think we know about
The greater the unknown"
Words by neil peart, music by geddy lee and alex lifeson
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mitsun
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Re: Board Problem #1

Post by mitsun »

:w1: seems necessary, to preserve the usefulness of the two stones to the left.

I would be tempted to continue with :w3: directly in the diagram below to probe B response. If B defends as shown below, W gets to make a nice framework, and the B corner still has cutting points. I do not think B can invade at (a) after this sequence.

Click Here To Show Diagram Code
[go]$$Wc
$$---------------------
$$|...................|
$$|...................|
$$|...XO...a.1XXX.....|
$$|..X.O....O.OOO2X...|
$$|.635...............|
$$|..4X7..............|
$$|...................|
$$|..O................|
$$|...................|
$$|..OX...........X...|
$$|..OX...............|
$$|..OX...............|
$$|..OX...............|
$$|...................|
$$|..X.XO.............|
$$|.....O.X.......O...|
$$|...O..OX....X......|
$$|...................|
$$|...................|
$$---------------------[/go]


If B counter-attacks as in the diagram below, W can handle the fight. While B runs with the cutting stones and lives in the corner, W should be able to make territory and protect the weakness at (a).

Click Here To Show Diagram Code
[go]$$Wc
$$---------------------
$$|...................|
$$|...................|
$$|..6XO...a.1XXX.....|
$$|..X5O....O.OOO2X...|
$$|..34...............|
$$|..7X...............|
$$|...................|
$$|..O................|
$$|...................|
$$|..OX...........X...|
$$|..OX...............|
$$|..OX...............|
$$|..OX...............|
$$|...................|
$$|..X.XO.............|
$$|.....O.X.......O...|
$$|...O..OX....X......|
$$|...................|
$$|...................|
$$---------------------[/go]


:w3: in the diagram below is a huge point for both sides, but I think the unsettled upper left situation takes precedence. If B gets a chance to invade first, the two W stones to the left could turn from strength into weakness.

Click Here To Show Diagram Code
[go]$$Wc
$$---------------------
$$|...................|
$$|...................|
$$|...XO...4.1XXX.....|
$$|..X.O....O.OOO2X...|
$$|...................|
$$|...X...............|
$$|...................|
$$|..O................|
$$|...................|
$$|..OX...........X...|
$$|..OX...............|
$$|..OX...............|
$$|..OX...............|
$$|................3..|
$$|..X.XO.............|
$$|.....O.X.......O...|
$$|...O..OX....X......|
$$|...................|
$$|...................|
$$---------------------[/go]
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Wessik
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Re: Board Problem #1

Post by Wessik »

The sgf file got corrupted somehow. :( So I had to create a diagram showing the rest of the game. White played an interesting tesuji that wins her the game. I have decided to show that tesujii in board diagram.

Click Here To Show Diagram Code
[go]$$Wc
$$---------------------
$$|...................|
$$|...................|
$$|..XXO.....OXXXX9...|
$$|..XOO....O.OOOOX7..|
$$|..OXOX........21X..|
$$|..OXOO........X356.|
$$|..OXOX.........48..|
$$|..OXO.........O....|
$$|.OXXXOO............|
$$|..OX.XO........X...|
$$|..OX.X.............|
$$|..O............XO..|
$$|..O................|
$$|.....X........X.X..|
$$|..X.XO.......O.....|
$$|.....O.X..X....O...|
$$|...O..OX....X.O....|
$$|...................|
$$|...................|
$$---------------------[/go]


Also, Mitsun, you were correct.

After white nine, black connects, and then white played R17, at which point black resigns.
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