Page 4 of 14
Re: 103. EdLee vs topazg
Posted: Tue Mar 08, 2011 3:08 am
by topazg
$$Bm19
Click Here To Show Diagram Code [go]$$Bm19
I've been trying to decide whether that was a trick play, an overplay, aji-keshi, or just a good move. I think it's aji-keshi:
There's not enough theory for this to be a formal trick play. It's not thin or in danger of severe counter-attack, so I wouldn't call it overplay. It clearly makes miai of the following:
$$Bm19
Click Here To Show Diagram Code [go]$$Bm19"a" is downright frightening. Letting White play that is crazy (White gets to double hane in sente, then fix that cut I want to play at G16), and I can't afford to let that happen unless "b" is even worse. However, "b" doesn't worry me, it's entirely the wrong thing to be trying to do with this wall I think. For one thing, I can play as follows:
$$Bm19
Click Here To Show Diagram Code [go]$$Bm19Now, I still have the 3-3 invasion in the lower left, and I have a very hard to kill group. Morever, the marked White wall is now next to useless, and the cut at "a" is still awkward to handle. I may also inclined to simply ignore it if White plays there, or to do something in the lower left instead, as responding at all simply makes Black kind of semi-heavy, and my pincer stone will already have achieved it's purpose. I haven't decided, we'll see what he does.
So, why aji-keshi? Because he will never get to play this end-game now. It's not that big, but a loss of a few points is a loss of a few points, and he still has to come back and fix that cut at "a"
$$Bm19
Click Here To Show Diagram Code [go]$$Bm19The next few moves will really require some thought though.
Posted: Tue Mar 08, 2011 3:24 am
by EdLee
First feeling is the pincer
; have to think.
$$B
Click Here To Show Diagram Code [go]$$B
Posted: Tue Mar 08, 2011 8:06 pm
by EdLee
$$Wm20
Click Here To Show Diagram Code [go]$$Wm20
Posted: Tue Mar 08, 2011 8:38 pm
by EdLee
One of the first variations -- although W has (d), the top still feels a bit thin for W.
For example, if B (b), W (a); if B (a), W (c), B (b), etc.
$$W
Click Here To Show Diagram Code [go]$$WIn the following, since W has the
exchange, if
at (e), W has the strong cap at (f).
By comparison,
above seems a lot thinner (because of the (b) weakness).
$$B Reference variation
Click Here To Show Diagram Code [go]$$B Reference variation(p)
is lukewarm; it does not quite fix the weakness at (a),
and the outside influence is not very useful.
But if W just fixes (a) directly, it feels a bit slow:
$$W
Click Here To Show Diagram Code [go]$$WIf W pincers, then after
, (b) and (c) are miai:
if B jumps out to (b), W can connect with (c), then B has a floating group; or,
if B splits W with (d), and W caps with (b), then it does not look too good for B;
which means the original
may not be good:
$$W
Click Here To Show Diagram Code [go]$$WSimply connecting out with
is another idea --
it makes
not very severe, as W can fight;
two Chinese pros played this
in 2009:
$$W
Click Here To Show Diagram Code [go]$$W
Re: 103. EdLee vs topazg
Posted: Wed Mar 09, 2011 2:18 am
by topazg
$$Wm20
Click Here To Show Diagram Code [go]$$Wm20
Posted: Wed Mar 09, 2011 3:02 am
by EdLee
First feeling:
$$B
Click Here To Show Diagram Code [go]$$B
Re: 103. EdLee vs topazg
Posted: Wed Mar 09, 2011 6:53 am
by Magicwand
for obs only:
below is my first feeling.
going low will let him out too easy.
$$B
Click Here To Show Diagram Code [go]$$B
Re: 103. EdLee vs topazg
Posted: Wed Mar 09, 2011 9:24 am
by unkx80
$$B
Click Here To Show Diagram Code [go]$$BI would be inclined to play
here, and treat the marked black stone lightly.
Re: 103. EdLee vs topazg
Posted: Wed Mar 09, 2011 12:48 pm
by topazg
I've decided I probably should also post the moves I rejected. If anyone wants to ask why about any of them, please do
$$Wm20
Click Here To Show Diagram Code [go]$$Wm20
Posted: Wed Mar 09, 2011 2:59 pm
by EdLee
$$Wm22
Click Here To Show Diagram Code [go]$$Wm22(p)
- unkx80's idea for B to treat
lightly and jump to (a) instead of
is good;
- my first feeling of blocking at (b) was also better than
:
$$Bm21
Click Here To Show Diagram Code [go]$$Bm21
Re: 103. EdLee vs topazg
Posted: Wed Mar 09, 2011 3:13 pm
by topazg
$$Wm22
Click Here To Show Diagram Code [go]$$Wm22
Posted: Wed Mar 09, 2011 3:16 pm
by EdLee
Some ideas:
After
, the lower left becomes thin; e.g. (a), (b), etc.:
$$W
Click Here To Show Diagram Code [go]$$WSimilarly, after
, aji at (c),(d),(e), etc.:
$$W
Click Here To Show Diagram Code [go]$$WLocally, B has an open skirt:
$$W
Click Here To Show Diagram Code [go]$$WThe cut at
may be premature?
$$W
Click Here To Show Diagram Code [go]$$W
Re: 103. EdLee vs topazg
Posted: Wed Mar 09, 2011 3:21 pm
by Chew Terr
Ed: Topazg just gave a brief summary of how he felt about the game. Would you be willing to do the same (in a hide tag)? Would you mind explaining how you feel about the way the game is going and any concerns or goals you may have at the moment?
Posted: Wed Mar 09, 2011 3:40 pm
by EdLee
Chew Terr: Yes, let me gather my thoughts.
Posted: Wed Mar 09, 2011 3:47 pm
by EdLee
$$Wm24
Click Here To Show Diagram Code [go]$$Wm24
Seems a big shared area: either W can make eye space here, or B can.
Another idea is to try to fix the aji at (a), then
first, but it seems to let B off too easily:
$$W Variation
Click Here To Show Diagram Code [go]$$W Variation
; have to think. 
exchange, if 
at (e), W has the strong cap at (f).
above seems a lot thinner (because of the (b) weakness).
is lukewarm; it does not quite fix the weakness at (a),
may not be good:
is another idea --
not very severe, as W can fight;
here, and treat the marked black stone lightly.
is good;
:
, the lower left becomes thin; e.g. (a), (b), etc.:
first, but it seems to let B off too easily: