jeromie
Lives in sente
Posts: 902 Joined: Fri Jan 31, 2014 7:12 pmRank: AGA 3kGD Posts: 0Universal go server handle: jeromieLocation: Fort Collins, COHas thanked: 319 times Been thanked: 287 times
Post
by jeromie Mon Nov 06, 2017 1:42 pm
$$Bcm33
Click Here To Show Diagram Code [go]$$Bcm33
The primary moves I am considering at this point are a and b. a has the advantage of connecting my stone with my group on the side, at which point I can launch a fairly aggressive attempt to reduce the center. If he makes a move that will protect the center I can follow up with the cut at b without too much concern about 34 being cut off (though I do have to look out for the forcing move at E14).
b makes the cut I am aiming at directly. I'm concerned that black might be able to defend the center and the cut with a dual purpose move, and I want to make the cut while black's kings in the upper right are still something he has to concern himself with. However, if black defends with M15 I risk strengthening the center while making only a small gain along the top.
I think the strategic question to ask is: if black fixes the cut after I play a, can I invade / reduce enough to win?
jeromie
Lives in sente
Posts: 902 Joined: Fri Jan 31, 2014 7:12 pmRank: AGA 3kGD Posts: 0Universal go server handle: jeromieLocation: Fort Collins, COHas thanked: 319 times Been thanked: 287 times
Post
by jeromie Mon Nov 06, 2017 9:21 pm
$$Bcm33
Click Here To Show Diagram Code [go]$$Bcm33
hyperpape
Tengen
Posts: 4382 Joined: Thu May 06, 2010 3:24 pmRank: AGA 3kGD Posts: 65OGS: Hyperpape 4kLocation: Caldas da Rainha, PortugalHas thanked: 499 times Been thanked: 727 times
Post
by hyperpape Sat Nov 11, 2017 1:49 pm
$$Bcm33
Click Here To Show Diagram Code [go]$$Bcm33
White has 14 LL, 10 UR, 16 UL or so, plus komi, minus group tax of 6, plus 9 kings on the board = 45 points showing? There's some room to grow for White in the upper left, and not much else. I have an enormous moyo. White should easily be able to live somewhere in the lower right, but this begins to sketch out two big areas I could try to enclose in spite of that. I don't feel too bad about the position.
Also,
and
are not fully connected to the left, but I can't hope to exploit that unless I get other stones nearby.
Edit: corrected move numbers in the commentary.
jeromie
Lives in sente
Posts: 902 Joined: Fri Jan 31, 2014 7:12 pmRank: AGA 3kGD Posts: 0Universal go server handle: jeromieLocation: Fort Collins, COHas thanked: 319 times Been thanked: 287 times
Post
by jeromie Mon Nov 13, 2017 8:27 pm
I think I need to go ahead and make an approach in the lower right before that gets closed off. I want to approach the corner, but I'm a little concerned about a move like 39 below allowing black to consolidate too much territory, but I can't find a better way for white to handle that area. I want to think on it a little more before I jump in rashly. Is there an outside move to disrupt the moyo that I can play first?
$$Bcm33
Click Here To Show Diagram Code [go]$$Bcm33
jeromie
Lives in sente
Posts: 902 Joined: Fri Jan 31, 2014 7:12 pmRank: AGA 3kGD Posts: 0Universal go server handle: jeromieLocation: Fort Collins, COHas thanked: 319 times Been thanked: 287 times
Post
by jeromie Tue Nov 14, 2017 10:03 pm
jeromie
Lives in sente
Posts: 902 Joined: Fri Jan 31, 2014 7:12 pmRank: AGA 3kGD Posts: 0Universal go server handle: jeromieLocation: Fort Collins, COHas thanked: 319 times Been thanked: 287 times
Post
by jeromie Wed Nov 15, 2017 10:49 pm
$$Bcm33
Click Here To Show Diagram Code [go]$$Bcm33
Last time I described black as thick. That's not quite right - black has a lot of weaknesses. The problem is that if I take advantage of one weakness, black will inevitably shore up others while attacking my stone. I think I've made a mistake to let the tengen stone get in place.
I considered moves at all the circled points below. Really this is too many candidate moves, but I'm having trouble figuring out the best way to attack. I think I may be overcomplicating things and trying to get too fancy. Common sense says playing right in the middle of black's moyo is a bad idea, though it does look enticing since both sides are still open. But black would get to pick the direction of attack then, and I would loose the initiative. In the end, I think a simple move is best. The low approach is the most common move with the black configuration on the sides (Waltheri), and I don't think I should let the tengen stone make me throw that out completely. I do think I need to treat it lightly, almost as a probe, and see what black does next.
$$B
Click Here To Show Diagram Code [go]$$B
hyperpape
Tengen
Posts: 4382 Joined: Thu May 06, 2010 3:24 pmRank: AGA 3kGD Posts: 65OGS: Hyperpape 4kLocation: Caldas da Rainha, PortugalHas thanked: 499 times Been thanked: 727 times
Post
by hyperpape Sun Nov 19, 2017 8:19 am
$$Bcm33
Click Here To Show Diagram Code [go]$$Bcm33 Initial thoughts: I'm considering the four moves shown below. I'm still not sure,
but I think
b and
d are the most compelling.
Edit: corrected diagram
hyperpape
Tengen
Posts: 4382 Joined: Thu May 06, 2010 3:24 pmRank: AGA 3kGD Posts: 65OGS: Hyperpape 4kLocation: Caldas da Rainha, PortugalHas thanked: 499 times Been thanked: 727 times
Post
by hyperpape Wed Nov 29, 2017 5:23 am
Hey, I know I’m way behind on a move. I’ll hopefully have time today or tomorrow to choose and/or write up a post.
jeromie
Lives in sente
Posts: 902 Joined: Fri Jan 31, 2014 7:12 pmRank: AGA 3kGD Posts: 0Universal go server handle: jeromieLocation: Fort Collins, COHas thanked: 319 times Been thanked: 287 times
Post
by jeromie Wed Nov 29, 2017 10:12 am
Thanks for the update. Play whenever you’re ready; I’m in no hurry!
hyperpape
Tengen
Posts: 4382 Joined: Thu May 06, 2010 3:24 pmRank: AGA 3kGD Posts: 65OGS: Hyperpape 4kLocation: Caldas da Rainha, PortugalHas thanked: 499 times Been thanked: 727 times
Post
by hyperpape Mon Dec 04, 2017 7:07 pm
jeromie
Lives in sente
Posts: 902 Joined: Fri Jan 31, 2014 7:12 pmRank: AGA 3kGD Posts: 0Universal go server handle: jeromieLocation: Fort Collins, COHas thanked: 319 times Been thanked: 287 times
Post
by jeromie Mon Dec 11, 2017 12:30 pm
Bill Spight wrote: $$Wcm10
Click Here To Show Diagram Code [go]$$Wcm10
I don't know about AlphaGo, but this is a position about which Go Seigen was ambivalent. In his 10 book set,
21st Century Go , there is one place where he likes it for White, one place where he doesn't.
$$Wcm10
Click Here To Show Diagram Code [go]$$Wcm10
My sealed move.
Edit: Unhidden.
Now we do know about AlphaGo! It also preferred the cut.
In fact, it would have cut immediately at 10 (and connected for 9).
hyperpape
Tengen
Posts: 4382 Joined: Thu May 06, 2010 3:24 pmRank: AGA 3kGD Posts: 65OGS: Hyperpape 4kLocation: Caldas da Rainha, PortugalHas thanked: 499 times Been thanked: 727 times
Post
by hyperpape Mon Dec 11, 2017 8:04 pm
$$Bcm33
Click Here To Show Diagram Code [go]$$Bcm33
I decided that if White does a double approach, both the pincer and the descent into the corner look rather promising. I think that if White plays at
, I'm happy enough to continue at b . As White, I don't think I'd play that way, but that may be my greed/jealousy speaking. $$Bcm33
Click Here To Show Diagram Code [go]$$Bcm33 Of the two double approaches, the distant one at
c was harder to think about a next move against. I'm not sure that makes it good, but I'm most uncertain about it.
jeromie
Lives in sente
Posts: 902 Joined: Fri Jan 31, 2014 7:12 pmRank: AGA 3kGD Posts: 0Universal go server handle: jeromieLocation: Fort Collins, COHas thanked: 319 times Been thanked: 287 times
Post
by jeromie Tue Dec 12, 2017 3:00 pm
$$Bcm33
Click Here To Show Diagram Code [go]$$Bcm33
I tend to move fast in these games (relatively speaking) because I struggle to use the extra thinking time of a correspondence game. There aren’t any immediate life and death concerns for me right now, so it’s mostly evaluating the result of the position. But that is hard to do, and I’m not sure I do it more effectively when I spend more than about 15 minutes in the problem. Mostly it comes down to intuition and thinking about my strategic goals.
$$Bcm33
Click Here To Show Diagram Code [go]$$Bcm33
I considered all of a-e. I didn’t really look at jumping into the corner right now because it would basically remove all of the weaknesses in black’s position. I felt b is too low; I could get pressed down very easily. c doesn’t feel right yet; black’s last move doesn’t make me want to abandon my stone. E starts a fight that will also remove weaknesses in black’s position. I think the move I chose threatens the big center while leaving enough weakness on the right /in the corner that I may be able to make a follow up move there after settling my group. It also threatens a move at the marked point in the future that could potentially help me break into the center or make a big territory on the bottom.
hyperpape
Tengen
Posts: 4382 Joined: Thu May 06, 2010 3:24 pmRank: AGA 3kGD Posts: 65OGS: Hyperpape 4kLocation: Caldas da Rainha, PortugalHas thanked: 499 times Been thanked: 727 times
Post
by hyperpape Tue Dec 12, 2017 9:29 pm
$$Bcm39
Click Here To Show Diagram Code [go]$$Bcm39
jeromie
Lives in sente
Posts: 902 Joined: Fri Jan 31, 2014 7:12 pmRank: AGA 3kGD Posts: 0Universal go server handle: jeromieLocation: Fort Collins, COHas thanked: 319 times Been thanked: 287 times
Post
by jeromie Tue Dec 12, 2017 9:40 pm
$$Bcm39
Click Here To Show Diagram Code [go]$$Bcm39
and 
are not fully connected to the left, but I can't hope to exploit that unless I get other stones nearby.