- Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . , O . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . 1 3 . . . . . . . . . . . . O . . |
$$ | . . . 2 4 . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . O O . 5 . . . . . . . . . . . . |
$$ | . . X X O . . . . . . . . . . . X . . |
$$ | . X X O X X . X . , . . . . O , . . . |
$$ | . X O O O . . . X . . . . . . O . . . |
$$ | . O 6 . . . O . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Wow,
is actually a very elegant move that I never would have thought of. It's important to look at the next diagram on the page to see it's true meaning.
- Click Here To Show Diagram Code
[go]$$Wcm7
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . , O . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . O O . . . . . . . . . . . . O . . |
$$ | . . . X X . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . O O . O . . . . . . . . . . . . |
$$ | . . X X O . . . . . . . . . . . X . . |
$$ | . X X O X X . X . , . . . . O , . . . |
$$ | . X O O O . . . X . . . . . . O . . . |
$$ | 4 O X 1 . . O . . . . . . . . . . . . |
$$ | . 2 3 . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
If white attempts to capture it with
and
,
sets up a ko which could rob white of his two eyes on the bottom while simultaneously giving the black corner group two eyes.
- Click Here To Show Diagram Code
[go]$$Wcm7
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . , O . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . O O . . . . . . . . . . . . O . . |
$$ | . . . X X . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . O O . O . . . . . . . . . . . . |
$$ | . . X X O . . . . . . . . . . . X . . |
$$ | . X X O X X . X . , . . . . O , . . . |
$$ | b X O O O 4 . . X . . . . . . O . . . |
$$ | 3 O X 1 a 5 O . . . . . . . . . . . . |
$$ | . 2 . 6 . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
However, if white extends with
, black's moves force a gigantic ko. Note that if white plays at 'a', black will play at 'b', and it is unclear how white will live if black wins the ko.
- Click Here To Show Diagram Code
[go]$$Wcm7
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . , O . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . O O . . . . . . . . . . . . O . . |
$$ | . . . X X . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . W W . W . . . . . . . . . . . . |
$$ | . . X X W . . . . . . . . . . . X . . |
$$ | . X X O B B . B . , . . . . O , . . . |
$$ | . X O O O 4 . . B . . . . . . O . . . |
$$ | 3 O X 1 . 6 O . . . . . . . . . . . . |
$$ | . 2 5 . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
This is clearly unplayable, as white gets sealed into a tiny corner and the marked black group gains a ton of strength, which would make it very hard for Jowa to justify trying to save the marked white group.
- Click Here To Show Diagram Code
[go]$$Wcm7
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . , O . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . O O . . . . . . . . . . . . O . . |
$$ | . . . X X . . . . . . . . . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . O O . Q . . . . . . . . . . . . |
$$ | . . X X O . 4 . . . . . . . . . X . . |
$$ | . X X O X X . X . , . . . . O , . . . |
$$ | . X O O O 3 . . X . . . . . . O . . . |
$$ | 5 O X 1 . . O . . . . . . . . . . . . |
$$ | . 2 . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
So, to prevent the diagram two up from here, white takes the key point of
first. Note that this threatens to capture black's two cutting stones, which is unacceptable for black. So black saves them with
, which also applies a lot of pressure to the
stone. However, white has more pressing matters to attend to, and must take
to live happily in the corner (and prevent black from doing the same). Now, however, black gains a tactical advantage on the outside, as white failed to respond to his contact move at
. The game shows this advantage being manifest:
- Click Here To Show Diagram Code
[go]$$Bcm12
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . , O . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . O O 5 . . . . . . . . . . . O . . |
$$ | . . . X X . 4 . . . . . . . . . . . . |
$$ | . . X . . . 2 3 . . . . . . . . . . . |
$$ | . . . W W . W 1 . . . . . . . . . . . |
$$ | . . X X W . X . . . . . . . . . X . . |
$$ | . X X O X X . X . , . . . . O , . . . |
$$ | . X O O O O . . X . . . . . . O . . . |
$$ | O O X O . . O . . . . . . . . . . . . |
$$ | . X . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Notice how weak the white cutting stones feel.
- Click Here To Show Diagram Code
[go]$$Wcm17
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . 0 . . . . . . . X . . . . |
$$ | . . 7 , O . . . . , . . . . . , X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 6 . . . . . . . . . . . . . . . . |
$$ | . . . 2 . . . . . . . . . . . . X . . |
$$ | . . . , . . . . . , . . . . . , . . . |
$$ | . . O O X . . . . . . . . . . . O . . |
$$ | . . . X X . O 1 . . . . . . . . . . . |
$$ | . . X . . . O X . . . . . . . . . . . |
$$ | . . . O O . O X . . . . . . . 9 . . . |
$$ | . . X X O 5 X 4 3 . . . . . . . X . . |
$$ | . X X O X X . X . , . . . . O , . . . |
$$ | . X O O O O . . X . . 8 . . . O . . . |
$$ | O O X O . . O . . . . . . . . . . . . |
$$ | . X . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Black is successfully able to capture white's iron pillar on the left side, securing a good amount of profit there. With
, black continues to put pressure on white.
Anyway, that's my understanding of black's throw in 20 moves ago. Someone else will have to explain the "ghost moves."