| Life In 19x19 http://lifein19x19.com/ |
|
| #205: The Intrepid vs. topazg: The Pistols http://lifein19x19.com/viewtopic.php?f=37&t=7716 |
Page 7 of 9 |
| Author: | topazg [ Wed Feb 13, 2013 4:46 pm ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
Connecting first before working more with the lower right corner. |
|
| Author: | The Intrepid [ Wed Feb 13, 2013 6:19 pm ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
Oh, wow, that was topazg's plan ... and here I thought he wanted to fight!  I'll probably jump next, as shown below, but I'll think about it first.
|
|
| Author: | The Intrepid [ Thu Feb 14, 2013 12:09 am ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
I believe I might be able to do the following:
Next, if Black jumps from his lone stone, White has this variation:
Needless to say, this would be a fantastic result for White. However, if Black were to prevent this variation, White could capture the lone Black stone. The following move should work, although there could be other (greedier) ones, as well. This would be a loss of around 20-25 points for Black (although Black did get around 7 points on the right side). Thus, Black would likely fall further behind.
That said, I have a feeling topazg's whole plan is to sacrifice this one stone in exchange for profit on the top-right. Thus, I'll need to think some more. Maybe I can come up with something cleverer. In retrospect, why not try to capture the Black stone right away any be done with it? 
Actually, looks like I was miscalculating:
|
|
| Author: | The Intrepid [ Thu Feb 14, 2013 11:00 pm ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
In retrospect, maybe I should have played at O13 instead of P13. Now, the cut at O14 might remain a problem for a long time. As for the aji of R12 which I was looking at in my previous post, I can't make anything work there, yet. Also, I was incorrect in thinking that I could kill the Black stone in the bottom-right via a shoulder attachment. I cannot see how to kill Black after the following variation:
Given this, it's better to encourage Black to jump instead, gaining White points along the side.
|
|
| Author: | topazg [ Fri Feb 15, 2013 8:10 am ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
Contact plays strengthen both sides - he's made enough moves around here that I'm more than happy playing this way. |
|
| Author: | The Intrepid [ Sun Feb 17, 2013 3:06 am ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
topazg intends to exchange  and  for  and  before he jumps.
I am unlikely to deviate from the sequence I indicated above, but I'll double-check if there aren't any cleverer tries for White. |
|
| Author: | topazg [ Sun Feb 17, 2013 9:01 am ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
As I've been quite poor at keeping my thoughts posted due to limited time at the moment, I've put some of the random spare time I've had in the last couple of days writing my thoughts up a bit. Any thoughts, questions or comments you want me to see are welcome  |
|
| Author: | The Intrepid [ Sun Feb 17, 2013 2:52 pm ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
If I haned, I was worried that I'd give Black too many cuts, cross-cuts, and whatnot. This could let Black live too easily. The solid extension, by contrast, reduces Black's options and leaves Black with only one eye on the side, forcing a running battle. The following is a possible sequence:
|
|
| Author: | topazg [ Sun Feb 17, 2013 4:15 pm ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
|
|
| Author: | The Intrepid [ Mon Feb 18, 2013 9:31 pm ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
The order of moves is important. For instance, if hane first, Black could choose this variation, essentially guaranteeing life to the Black group.
|
|
| Author: | topazg [ Mon Feb 18, 2013 9:38 pm ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
That looks like a White mistake to me... life is now guaranteed locally, which is handy!
I don't see it as possible for White to prevent Black getting an eye at "a" and another at "b", which means I'll probably think about playing  around "c" |
|
| Author: | The Intrepid [ Mon Feb 18, 2013 9:58 pm ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
Change of plans. There probably isn't much substantive difference between the moves, hopefully, but I better check. |
|
| Author: | The Intrepid [ Mon Feb 18, 2013 10:26 pm ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
I guess topazg could try to live here--but only at the cost of harming the two Black stones above. The price for life might be too steep. Naturally, he might simply jump, leaving the aji in the position for when he truly needs it. |
|
| Author: | topazg [ Tue Feb 19, 2013 1:22 am ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
|
|
| Author: | The Intrepid [ Tue Feb 19, 2013 1:54 am ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
Black threatens to connect, as the cutting stone at  has nowhere to run and, thus, would get captured in short order (and, besides, Black would already be alive on both sides even if were to survive).
However, I think I can simply extend downward. This move not only prevents the connection, but also threatens to cut off Black's two stones from the stones above them.
To be honest, I am a bit surprised that topazg has, so far, refused so strongly and sternly to jump and fight. I surmise that he worries about giving me too much territory along the bottom, but living small (like he seems intent on doing)--and at the expense of the other stones on the right side--might turn out to be a significantly worse choice. Well, we'll see. |
|
| Author: | The Intrepid [ Wed Feb 20, 2013 12:54 pm ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
A Notice of Delay topazg, I'll be travelling during the next two weeks, and it's unlikely I'll have time to make moves during that time. Hence, should you fancy taking 14 days to think over your next move, let nothing stop you from doing so.
I briefly looked at a few alternatives, but the simple descent seems easily best. Killing the group outright (with something akin to "a") seems impossible. I also looked at moves like "b" with the intent to give easy life to the group below in exchange for additional strength against the two Black stones above. However, the simple descent should be sufficient against the two stones above, while there is more benefit still to be had from attacking the Black group below.
I expect a sequence akin to this one:
|
|
| Author: | topazg [ Wed Feb 20, 2013 4:10 pm ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
I don't think White can kill with one move, so I'm going to extend along the bottom after he responds:
Now "a" makes a serious cutting threat of the shape points at "b". I can't take  first happily because White will just extend at the bottom, which is big, and much though I don't like to get sealed in, White hasn't got any points at my central stone is at least somewhat supported by Next, I want to cut at "c" if I can, hopefully either settling the marked Black stones or taking a large territory at the top. Optimistic and greedy? Me? |
|
| Author: | The Intrepid [ Wed Feb 20, 2013 5:01 pm ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
14-day thinking time not required?  topazg is playing with fire. The idea behind his move, I believe, is to reduce my territory in sente (I have to respond if I want to deny Black easy life). However, don't I get to play the following eye-space-reducing move in sente?
This small detail could be the difference between Black group having two eyes on the side and not having them there. |
|
| Author: | The Intrepid [ Thu Mar 14, 2013 7:45 pm ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
topazg, sorry that I'm taking such a long time to play. I ought to be able to uncork a move soon. I've looked at the position briefly just now, and I wonder what would happen if I played the following move:
|
|
| Author: | The Intrepid [ Sat Mar 16, 2013 11:12 pm ] |
| Post subject: | Re: #205: The Intrepid vs. topazg: The Pistols |
All right, here we go! One of the two marked groups will die--and if neither of them do, I will get sufficient compensation elsewhere ... or so I think.
Sample variations:
|
|
| Page 7 of 9 | All times are UTC - 8 hours [ DST ] |
| Powered by phpBB © 2000, 2002, 2005, 2007 phpBB Group http://www.phpbb.com/ |
|
tenuki