Horibe wrote:
Your thinking is not bad, but the answer is b3
Is that one of those "basics"?
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| Simple connection question http://www.lifein19x19.com/viewtopic.php?f=11&t=6901 |
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| Author: | PeterPeter [ Fri Oct 05, 2012 11:54 am ] |
| Post subject: | Simple connection question |
I want to protect the marked Black stone. The computer is suggesting A, but I feel that B is better as it is closer to the important centre. Any thoughts? |
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| Author: | Horibe [ Fri Oct 05, 2012 11:59 am ] |
| Post subject: | Re: Simple connection question |
Your thinking is not bad, but the answer is b3 |
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| Author: | jts [ Fri Oct 05, 2012 12:00 pm ] |
| Post subject: | Re: Simple connection question |
B3 is best. If you need to connect, connecting by capturing enemy stones is always preferable to playing inside your territory. As for d2 versus d3... this is a matter of taste and circumstance. The question comes up a lot. D3 is a "hanging connection". It normally stretches out further to affect points further away, but it leaves ko threats (the atari at e1), peeps (at e2), and various other weaknesses that the the "direct" or "solid" connection at d2 doesn't have. |
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| Author: | p2501 [ Fri Oct 05, 2012 12:01 pm ] |
| Post subject: | Re: Simple connection question |
b) helps more in the center but also leaves a ko threat at the bottom. If a) or b) would make no difference in territory, a) would be clearly better. |
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| Author: | PeterPeter [ Fri Oct 05, 2012 12:09 pm ] |
| Post subject: | Re: Simple connection question |
I did look briefly at b3, and rejected it due to White connecting on a3, but I have now seen that Black can play a2 and win the corner through a snapback! |
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| Author: | Bill Spight [ Fri Oct 05, 2012 1:36 pm ] |
| Post subject: | Re: Simple connection question |
Horibe wrote: Your thinking is not bad, but the answer is b3 Is that one of those "basics"?
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| Author: | jts [ Fri Oct 05, 2012 2:29 pm ] |
| Post subject: | Re: Simple connection question |
PeterPeter wrote: I did look briefly at b3, and rejected it due to White connecting on a3, but I have now seen that Black can play a2 and win the corner through a snapback! Yes, but knowing the answer, it might be fun for you to read through it to make sure. It's a good readin exercise. |
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| Author: | Bonobo [ Fri Oct 05, 2012 2:37 pm ] |
| Post subject: | Re: Simple connection question |
Bill Spight wrote: Horibe wrote: Your thinking is not bad, but the answer is b3 Is that one of those "basics"?  fundamentally, essentially basic.
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| Author: | jts [ Mon Oct 08, 2012 12:32 pm ] |
| Post subject: | Re: Simple connection question |
Another connection problem. B is a mess - four cutting points, no less. What's the best way for B to connect? |
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| Author: | PeterPeter [ Mon Oct 08, 2012 1:11 pm ] |
| Post subject: | Re: Simple connection question |
This protects 2 of the cutting points with one stone: Or you could occupy one and protect the other using a ladder: There are a few places to set up a similar ladder, you would choose one based on the rest of the board? |
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| Author: | EdLee [ Mon Oct 08, 2012 1:17 pm ] |
| Post subject: | |
Peter,  |
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| Author: | PeterPeter [ Mon Oct 08, 2012 1:29 pm ] |
| Post subject: | Re: Simple connection question |
1. Oh yes, you can win the white group 2. Not as good as winning the group, but the ladders at A and B look OK, as far as we can see of the board? |
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| Author: | EdLee [ Mon Oct 08, 2012 1:34 pm ] |
| Post subject: | |
PeterPeter wrote: 2. Not as good as winning the group, but the ladders at A and B look OK, as far as we can see of the board? W can kill  with  IN SENTE, and B still has to deal with all his weaknesses.(For example, if the situation changes later, a local vital point for W to annoy B is (c).) |
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| Author: | jts [ Mon Oct 08, 2012 2:03 pm ] |
| Post subject: | Re: Simple connection question |
PeterPeter wrote: Not as good as winning the group, but the ladders at A and B look OK, as far as we can see of the board? No, those ladders/nets/whatever look painful. I'd rather capture!Have you seen a ladder breaker played? In most problems we don't show the other corners, but we know that ladders are really painful so a solution with a ladder is worse than a solution without a ladder. (Likewise, we don't show ko threats in most games, but if you've fought through a lot of kos you know that an unconditional solution is always much better than a ko, and making a ko is better than a kick in the face.) |
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| Author: | xed_over [ Mon Oct 08, 2012 3:05 pm ] |
| Post subject: | Re: Simple connection question |
jts wrote: making a ko is better than a kick in the face. hahaha... someone needs to take this as their sig. |
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| Author: | Mef [ Mon Oct 08, 2012 5:15 pm ] |
| Post subject: | Re: Simple connection question |
jts wrote: making a ko is better than a kick in the face.) How hard of a kick are we talking about? |
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| Author: | jts [ Tue Oct 09, 2012 5:57 am ] |
| Post subject: | Re: Simple connection question |
Mef wrote: jts wrote: making a ko is better than a kick in the face.) How hard of a kick are we talking about? Well, it really depends who takes the ko first, doesn't it? Having dodged the most difficult question, here's another connection problem for Peter. Now, I know that there are many players on this forum who know how to fix a cutting point, so lets give Peter (or any other interested beginners) a few cracks at it first. Black to move. |
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| Author: | PeterPeter [ Tue Oct 09, 2012 6:07 am ] |
| Post subject: | Re: Simple connection question |
I have learnt what to look for now |
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| Author: | jts [ Tue Oct 09, 2012 6:11 am ] |
| Post subject: | Re: Simple connection question |
Very good! Now what if we change it a little bit? |
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| Author: | PeterPeter [ Tue Oct 09, 2012 6:45 am ] |
| Post subject: | Re: Simple connection question |
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looks to be vital for Black to stop White connecting everything with 2 eyes. Now if White replies at A, Black wins the group via a snapback. If White tries to cause trouble at B, it looks like Black can contain it and then extinguish the White group.