EdLee wrote:I think either A or B, but not C.Kirby wrote:maybe it would have been fine to do even this:$$W Var C
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X 2 X . . |
$$. X X X O X O X 1 . . |
$$. . X O O . O O 3 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
- Click Here To Show Diagram Code
[go]$$W Var C
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X 2 X . . |
$$. X X X O X O X 1 . . |
$$. . X O O . O O 3 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------[/go]$$W Var A
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X . X . . |
$$. X X X O X O X . . . |
$$. . X O O . O O 1 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
- Click Here To Show Diagram Code
[go]$$W Var A
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X . X . . |
$$. X X X O X O X . . . |
$$. . X O O . O O 1 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------[/go]$$W Var B
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X 2 X . . |
$$. X X X O X O X 1 . . |
$$. . X O O . O O . 3 . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
- Click Here To Show Diagram Code
[go]$$W Var B
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X 2 X . . |
$$. X X X O X O X 1 . . |
$$. . X O O . O O . 3 . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------[/go]
"Var B" is a good sequence sometimes, but I don't think that it's a good move here. If we play "Var C", we threaten to link up with the single stone, later:
$$W Var C
$$. . . . . . X . . . . |
$$. . . . X X . . W . . |
$$. . . O X . X 2 X 5 . |
$$. X X X O X O X 1 . . |
$$. . X O O . O O 3 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
$$. . . . . . X . . . . |
$$. . . . X X . . W . . |
$$. . . O X . X 2 X 5 . |
$$. X X X O X O X 1 . . |
$$. . X O O . O O 3 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
- Click Here To Show Diagram Code
[go]$$W Var C
$$. . . . . . X . . . . |
$$. . . . X X . . W . . |
$$. . . O X . X 2 X 5 . |
$$. X X X O X O X 1 . . |
$$. . X O O . O O 3 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------[/go]
"Var B" makes things harder for white:
$$W Var C
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X 2 X . . |
$$. X X X O X O X 1 4 . |
$$. . X O O . O O 5 3 . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X 2 X . . |
$$. X X X O X O X 1 4 . |
$$. . X O O . O O 5 3 . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
- Click Here To Show Diagram Code
[go]$$W Var C
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X 2 X . . |
$$. X X X O X O X 1 4 . |
$$. . X O O . O O 5 3 . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------[/go]
Above, if black does tenuki, the same move that was good for "Var C" doesn't work as well in "Var B":
$$W Var C - black 6 is tenuki
$$. . . . . . X . . . . |
$$. . . . X X . . W 8 . |
$$. . . O X . X 2 X 7 . |
$$. X X X O X O X 1 4 . |
$$. . X O O . O O 5 3 . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
$$. . . . . . X . . . . |
$$. . . . X X . . W 8 . |
$$. . . O X . X 2 X 7 . |
$$. X X X O X O X 1 4 . |
$$. . X O O . O O 5 3 . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
- Click Here To Show Diagram Code
[go]$$W Var C - black 6 is tenuki
$$. . . . . . X . . . . |
$$. . . . X X . . W 8 . |
$$. . . O X . X 2 X 7 . |
$$. X X X O X O X 1 4 . |
$$. . X O O . O O 5 3 . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------[/go]
The marked stone gets cut off. In "Var B", there is no such problem, unless black moves first in "Var C", in which case we get the same result:
$$W Var C
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X 2 X . . |
$$. X X X O X O X 1 4 . |
$$. . X O O . O O 3 5 . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X 2 X . . |
$$. X X X O X O X 1 4 . |
$$. . X O O . O O 3 5 . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
- Click Here To Show Diagram Code
[go]$$W Var C
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X 2 X . . |
$$. X X X O X O X 1 4 . |
$$. . X O O . O O 3 5 . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------[/go]
So I think that for the differentiating case, "Var C" is better than "Var B". The only exception to this might be if black simply played down:
$$W Var C
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X 2 X 4 . |
$$. X X X O X O X 1 . . |
$$. . X O O . O O 3 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X 2 X 4 . |
$$. X X X O X O X 1 . . |
$$. . X O O . O O 3 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
- Click Here To Show Diagram Code
[go]$$W Var C
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X 2 X 4 . |
$$. X X X O X O X 1 . . |
$$. . X O O . O O 3 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------[/go]
In which case, "Var C" is pretty much the same as "Var A":
$$W Var A
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X . X 4 . |
$$. X X X O X O X . . . |
$$. . X O O . O O 1 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X . X 4 . |
$$. X X X O X O X . . . |
$$. . X O O . O O 1 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
- Click Here To Show Diagram Code
[go]$$W Var A
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X . X 4 . |
$$. X X X O X O X . . . |
$$. . X O O . O O 1 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------[/go]
I think that the move in "Var B" is a good one to remember, but I do not see a reason that "Var B" is better than "Var C" in this case. In fact, I think that "Var C" is better than "Var B", for the reason mentioned above. I'm actually inclined to prefer "Var C" to "Var A" as well if I am going to give up sente.
So I guess I don't see a reason that "Var C" is inferior in any real way, except for your stating it.
Also, the difference between D and E (the game) is huge-- 20+ points??$$W Var D:tenuki
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X . X 3 . |
$$. X X X O X O X . . . |
$$. . X O O . O O 1 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------
- Click Here To Show Diagram Code
[go]$$W Var D:tenuki
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X . X 3 . |
$$. X X X O X O X . . . |
$$. . X O O . O O 1 . . |
$$. . . . . . . . . . . |
$$. . . . . . . . . . . |
$$-----------------------[/go]$$B Var E: The game
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X X X . . |
$$. X X X O X O X W 3 . |
$$. . X O O . O O 1 . . |
$$. . . . . . . . 2 4 . |
$$. . . . . . . . . . . |
$$-----------------------
- Click Here To Show Diagram Code
[go]$$B Var E: The game
$$. . . . . . X . . . . |
$$. . . . X X . . O . . |
$$. . . O X . X X X . . |
$$. X X X O X O X W 3 . |
$$. . X O O . O O 1 . . |
$$. . . . . . . . 2 4 . |
$$. . . . . . . . . . . |
$$-----------------------[/go]
I agree that it's big. I thought breaking into the moyo was also big. It's possible that breaking into the moyo was not as big as I had thought, but it's hard for me to calculate the value of the sente that I got.
But if I should have responded locally, I'm still inclined to respond as in "Var C", above.
tenuki
, below, also threatens to connect, just as "Var C" did, above;
... but it's a well placed stone so that's going to be difficult.