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#179 - DJLLAP vs opex http://lifein19x19.com/viewtopic.php?f=37&t=6636 |
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Author: | DJLLAP [ Sat Jun 01, 2013 10:41 am ] |
Post subject: | Re: #179 - DJLLAP vs opex |
This is why I think his last move was a mistake.
This is worse for My eyespace, and ends in Sente |
Author: | The Intrepid [ Sat Jun 01, 2013 11:49 am ] |
Post subject: | Re: #179 - DJLLAP vs opex |
opex wrote: If not this move then which? Well, this move does not work so it was better to leave it as a ko threat. White's only chance left is to do massive damage to Black's territory on the bottom--by living there or by killing the bottom-left corner. Therefore, White should aim at the cut at "a." I did not read here, but perhaps White can start with some move in the marked area:
Wait, what is Black doing?
This move for White would not work either:
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Author: | Shinkenjoe [ Sat Jun 01, 2013 12:17 pm ] |
Post subject: | Re: #179 - DJLLAP vs opex |
The Intrepid wrote: Edit:Wait, what is Black doing?
Game line is different now. I guess something like that could happen, with connecting and maybe some other
Fighting for life at a to d. With this line the top looks dead to me the group below can connect or make two eyes |
Author: | Shinkenjoe [ Sat Jun 01, 2013 12:31 pm ] |
Post subject: | Re: #179 - DJLLAP vs opex |
I rather think he will try to save the whole group. Looks promising At d Black will get an eye and maybe at top. edit: oh Black must connect first at Hmmm |
Author: | opex [ Mon Jun 03, 2013 3:05 pm ] |
Post subject: | Re: #179 - DJLLAP vs opex |
Forced. I think it's better than d14:
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Author: | DJLLAP [ Tue Jun 04, 2013 7:33 am ] |
Post subject: | Re: #179 - DJLLAP vs opex |
I am trusting that this should be sente since now I can cut his group in half. |
Author: | The Intrepid [ Tue Jun 04, 2013 8:55 pm ] |
Post subject: | Re: #179 - DJLLAP vs opex |
This game's exciting! ... and to think opex was almost ready to throw in the towel at one point. Never give up, never surrender! There is a problem for Black here. Black intends to cut White if White tenukis. However, cutting takes away liberties from his own group on the right, potentially leading to a huge ko fight:
If Black responds to this move, then White lived in sente, letting him come back to defend his group on the left. In other words, this would mean that White tenukied and got away with it, absent consequence. If Black does not respond to , on the other hand, White will begin the ko:
I don't think Black can fight this ko. Therefore, this option is no good for Black, either ... and that's assuming White has to play and can't tenuki again at that point. In any case, Black suddenly seems to be in great deal of trouble. The blunder on move 145 may well come to cost Black the game. White might consider to play the following move, which completely cuts Black group off while defending the cutting point at "a":
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Author: | skydyr [ Wed Jun 05, 2013 7:01 am ] |
Post subject: | Re: #179 - DJLLAP vs opex |
The Intrepid wrote: Edit:White might consider to play the following move, which completely cuts Black group off while defending the cutting point at "a":
I was looking at this too, but with one space to the left. White would still have miai to connect after blocking below A if black tries to wedge in, either capturing black's wedging stone or the other stone in a very short ladder. On reflection, though, that doesn't work after black extends to your . With this, though, things get complicated after black tries to cut the keima. Lots of ko threats for the left, and black doesn't have time to both eliminate the ko and the cut/connection by white. Looking back, I think black should just have connected at 133 and then fought it out on the left without having to worry about his main group. I've copied that position below.
125 as well (marked) did not really pressure any of white's groups and allowed white the marked move to eliminate his group worries and allow a more severe attack, though I think black was still ahead. If anything, I'd be tempted to have played it a line deeper, to make it easier to live underneath if it is cut off. |
Author: | The Intrepid [ Wed Jun 05, 2013 9:58 am ] |
Post subject: | Re: #179 - DJLLAP vs opex |
skydyr wrote: On reflection, though, that doesn't work after black extends to your . Black may also consider this move, which threatens to live with "b".
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Author: | The Intrepid [ Wed Jun 05, 2013 10:06 am ] |
Post subject: | Re: #179 - DJLLAP vs opex |
Now that I look at the position, perhaps White should not allow Black to play , so maybe White should play there himself:
Alternatively, White may consider to deny Black an eye on top, via the following move:
However, then Black might threaten to connect:
I guess I need to try to read a bit deeper into the position. |
Author: | Shinkenjoe [ Thu Jun 06, 2013 2:09 am ] |
Post subject: | Re: #179 - DJLLAP vs opex |
The Intrepid wrote: This game's exciting! ... and to think opex was almost ready to throw in the towel at one point. Never give up, never surrender! There is a problem for Black here. Black intends to cut White if White tenukis. However, cutting takes away liberties from his own group on the right, potentially leading to a huge ko fight:
did you also have (a) Q15 in mind ? So answering the cut looks urgent and your edit - suggested looks promising, but i think black made it. edit: oops i misinterpreted your post. It's just that black*s cut ends gote. |
Author: | skydyr [ Thu Jun 06, 2013 6:48 am ] |
Post subject: | Re: #179 - DJLLAP vs opex |
Shinkenjoe wrote: oops i misinterpreted your post. It's just that black*s cut ends gote. Well, black can choose sente in exchange for the ko. Whether that's a good idea or not is a different story. |
Author: | opex [ Thu Jun 06, 2013 9:24 am ] |
Post subject: | Re: #179 - DJLLAP vs opex |
Once in eternity i could write a more malkovitchish post His move threatens the cut:
But it reveals that black can play c in sente:
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Author: | jts [ Thu Jun 06, 2013 9:31 am ] |
Post subject: | Re: #179 - DJLLAP vs opex |
skydyr wrote: Shinkenjoe wrote: oops i misinterpreted your post. It's just that black*s cut ends gote. Well, black can choose sente in exchange for the ko. Whether that's a good idea or not is a different story. |
Author: | DJLLAP [ Thu Jun 06, 2013 2:48 pm ] |
Post subject: | Re: #179 - DJLLAP vs opex |
What a flurry of comments! I am aiming to threaten two things here. Capture those 2 stones, or make an eye on the side. I am pretty sure I can't be killed here, but if I am not careful, I might be in trouble. |
Author: | The Intrepid [ Thu Jun 06, 2013 6:00 pm ] |
Post subject: | Re: #179 - DJLLAP vs opex |
Black's move looks to be a mistake. Now White can play the following eye-destroying move in sente:
Moreover, Black is probably misreading here as far as whether his move threatens to capture the two White stones or not:
This is not the time to play inaccurately. Black needs to focus, realize the grave danger he's in, and steel himself for rugged resistance. |
Author: | opex [ Fri Jun 07, 2013 9:32 am ] |
Post subject: | Re: #179 - DJLLAP vs opex |
I hope it's sente. If he ignores to play something like b9 and i proceed to cut him in two, complications arise, so i'm slightly worried. On the other hand, isn't i the one to be seeking complications? |
Author: | DJLLAP [ Fri Jun 07, 2013 9:37 am ] |
Post subject: | Re: #179 - DJLLAP vs opex |
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Author: | opex [ Sat Jun 08, 2013 4:31 am ] |
Post subject: | Re: #179 - DJLLAP vs opex |
What a quick reply.. It was a no-brainer for him. I hope my move isn't a not-enough-brainer So, he connected, he should play safe. How could i use this attitude... I like to be safe too. If he cuts me and then goes here, i might have troubles, so i opt to protect my skirt and a little territory. Let's look at his eyes now. |
Author: | DJLLAP [ Sun Jun 09, 2013 4:11 pm ] |
Post subject: | Re: #179 - DJLLAP vs opex |
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