Hi everyone!
I have some trouble with the evaluation of a corner sequence I never encountered before from a recent kgs game. It would be nice if some stronger players could comment on this. Although the result was not bad for me, it still somehow feels as if my opponent got away easy.
It started from here (I'm white):
- Click Here To Show Diagram Code
[go]$$W Starting position.
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . . . . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 1 . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X , . . . . . , . . . . . , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O , . . . . . , . . . . . X . . . |
$$ | . . . O . O . . . . . . . X . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
My idea was this (5 could also be at a):
- Click Here To Show Diagram Code
[go]$$W The plan.
$$ ----------------
$$ . . . . . . . |
$$ . . . . . . . |
$$ . 2 . . 4 . . |
$$ . . . X . 3 . |
$$ . . . . . . . |
$$ . . 5 . 1 . . |
$$ . . . . . . . |
$$ . . . a . . . |
$$ . . . . . . . |
$$ . . . , O . . |
$$ . . . . . . . |[/go]
Instead it went like this, which felt good for w:
- Click Here To Show Diagram Code
[go]$$W Black overplay?
$$ ----------------
$$ . . . . . . . |
$$ . . . . . . . |
$$ . 2 . . 7 . . |
$$ . . . X . 3 . |
$$ . . . . . . . |
$$ . . 5 . 1 . . |
$$ . . . . . . . |
$$ . . 6 . 4 . . |
$$ . . . . . . . |
$$ . . . , O . . |
$$ . . . . . . . |[/go]
Now black surprised me with 1. In retrospect, I think I should have resisted strongly with a. In the game I wanted to keep things simple but it seems white can handle the fight.
- Click Here To Show Diagram Code
[go]$$B unusual...
$$ ----------------
$$ . . . . . . . |
$$ . . . . . . . |
$$ . X . . O . . |
$$ . . . X . O . |
$$ . . . . 1 . . |
$$ . . O . O a . |
$$ . . . . . . . |
$$ . . X . X . . |
$$ . . . . . . . |
$$ . . . , O . . |
$$ . . . . . . . |[/go]
continuation:
- Click Here To Show Diagram Code
[go]$$B conclusion
$$ ----------------
$$ . . . . . . . |
$$ . . . . . . . |
$$ . X . . O . . |
$$ . . . X . O . |
$$ . . . 5 1 2 . |
$$ . 9 O 3 O . . |
$$ . . 7 4 6 . . |
$$ . . X 8 X . . |
$$ . . . . . . . |
$$ . . . , O . . |
$$ . . . . . . . |[/go]
The result is very peaceful (maybe too much so?). White is not small and has swallowed the marked stone while black has considerable thickness, but white has sente. I probably should have played at a next. Instead I wanted too much with b and got seperated while facing blacks aforementioned thickness. Won the fight with a bit of luck though...
- Click Here To Show Diagram Code
[go]$$W Whole board end position.
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . a . . . . . . X . . O . . |
$$ | . . . O . . . . . , . . . . . X . O . |
$$ | . . . . . . . . . . . . . . . X X O . |
$$ | . . . . . . . . . . . . . X O X O . . |
$$ | . . . . . . . . . . . . . . X O O . . |
$$ | . . b . . . . . . . . . . . X O B . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X , . . . . . , . . . . . , O . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X X . . . . . . . . . . . . . . . |
$$ | . . O X . . . . . . . . . . . . . . . |
$$ | . . O , . . . . . , . . . . . X . . . |
$$ | . . . O . O . . . . . . . X . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
What is your opinion? Is this result equal? Should white fight with a as mentioned in the 4th diagram? Are there other options for either player?