Since I have sente and the position is relatively stable, it is time to evaluate the position.
Weak groups: There are no real weak groups on the board.
The aji at K2 is very annoying however, and my lower left corner could become weak if he plays a move in the corner and I don't go back and fix.
Bank:If we're talking about cash, white's upper left is worth about 35 points if he plays one more move there. His lower left is about 20 points and his influence on the right can make 20 points easily. Let's say he has about 75 points.
I have 15 points on the lower left, 8 points on the lower right. Furthermore my top right is worth about 30 points. My left is worth about 10 points. Let's say I have 60 points.
This means I am behind by about ten points.
The last moves:
- Click Here To Show Diagram Code
[go]$$Bcm61 Prisoners: White stones:0 ; Black stones:2
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . 8 . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . 0 . . . . . X . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . 9 . . |
$$ | . . 7 . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 3 X . . . . . , . . . . . , . . . |
$$ | . . O 1 . 5 . . . . . . X O . . . . . |
$$ | . . 2 4 . . . . . . . . O . O O O . . |
$$ | . . . . . 6 . . . . . . . O X X O O . |
$$ | . . . . . . . . . . X . X X X O O X . |
$$ | . . O . . . . . . . . X O . X O X X . |
$$ | . . . , O O O . . , X O O . X O X . . |
$$ | . . X . X X X . . . X X O O O X X . . |
$$ | . . . . . . . . . . X O . O . O X . . |
$$ | . . . . . . . . . X O O . . O . . . . |
$$ ---------------------------------------[/go]
I was not so unhappy with the 61-67 exchange. I think his lower left is overconcentrated. My left group is almost as powerful as his left group. Maybe my 69 should have been around 70, because it is a perfect point for him. However, a play of him at 69 would also be very big, so this exchange seems even. Moves 71 to 76 definately favor me. His wall is not facing towards a potentially weak group, nor will it be easy for him to make center territory. However I am not sure what I would have played as 72 for white.
Potentially harmful or joyful points
- Click Here To Show Diagram Code
[go]$$Bcm71 Prisoners: White stones:0 ; Black stones:2
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . d . . . 6 3 1 5 . . . . . . |
$$ | . . . , . . . . . O 4 2 . . . X . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . 7 . . . . . . . . . . X . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . c . . |
$$ | . . . . . . . . . . . . . . . . c . . |
$$ | . . X X . . . . . , . . . . . , . . . |
$$ | . . O X . X . . . . . . X O . . . . . |
$$ | . . O O . . . . . . . . O . O O O . . |
$$ | . . . . . O . . . . . . . O X X O O . |
$$ | . . . . . . . . . . X . X X X O O X . |
$$ | . a O . . . . . . . . X O . X O X X . |
$$ | . . . , O O O . . , X O O . X O X . . |
$$ | . a X . X X X . . . X X O O O X X . . |
$$ | . . . . . . . . . b X O . O . O X . . |
$$ | . . . . . . . . . X O O . . O . . . . |
$$ ---------------------------------------[/go]
If I maintain sente, I would like to play at a to take some corner points and make sure my corner and middle group are absolutely safe. After that I can play freely with no concern.