Elom wrote:
On move 141, if white plays at B11 first, as far as I can tell, it seems that C8 and the kosumi at C14 become miai).
How would you answer
? 
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| The way to BlackBelt http://lifein19x19.com/viewtopic.php?f=48&t=10687 |
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| Author: | skydyr [ Sat Mar 07, 2015 11:02 pm ] |
| Post subject: | Re: The way to BlackBelt |
I think, following the suggestion for 141, black gets out of trouble by playing an extension to B9? |
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| Author: | Elom [ Sun Mar 08, 2015 11:58 am ] |
| Post subject: | Re: The way to BlackBelt |
skydyr wrote: I think, following the suggestion for 141, black gets out of trouble by playing an extension to B9? Oh, the note was ambiguous, sorry-- what I meant to say was the black then has to cover two weakness. If black extends to B9, I think that after white plays at C14, black has no choice but to sacrifice four stones (in gote! Thanks to the C3 stone), becuase it doesn't seem black can resist... |
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| Author: | skydyr [ Mon Mar 09, 2015 10:49 am ] |
| Post subject: | Re: The way to BlackBelt |
Elom wrote: skydyr wrote: I think, following the suggestion for 141, black gets out of trouble by playing an extension to B9? Oh, the note was ambiguous, sorry-- what I meant to say was the black then has to cover two weakness. If black extends to B9, I think that after white plays at C14, black has no choice but to sacrifice four stones (in gote! Thanks to the C3 stone), becuase it doesn't seem black can resist... I thought black should be able to manage, but it's complicated so I'm not confident of that assessment. |
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| Author: | Sennahoj [ Tue Mar 10, 2015 7:55 am ] |
| Post subject: | Re: The way to BlackBelt |
Elom wrote: On move 141, if white plays at B11 first, as far as I can tell, it seems that C8 and the kosumi at C14 become miai). How would you answer ? |
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| Author: | Elom [ Tue Mar 10, 2015 12:25 pm ] |
| Post subject: | Re: The way to BlackBelt |
skydyr wrote: Elom wrote: skydyr wrote: I think, following the suggestion for 141, black gets out of trouble by playing an extension to B9? Oh, the note was ambiguous, sorry-- what I meant to say was the black then has to cover two weakness. If black extends to B9, I think that after white plays at C14, black has no choice but to sacrifice four stones (in gote! Thanks to the C3 stone), becuase it doesn't seem black can resist... I thought black should be able to manage, but it's complicated so I'm not confident of that assessment. Yes, the position has turned out to be quite interesting Sennahoj wrote: Elom wrote: On move 141, if white plays at B11 first, as far as I can tell, it seems that C8 and the kosumi at C14 become miai). How would you answer ? Thanks for your suggestion, Sennahoj! Hmm, it seems that if white plays above... I'm most likely missing something fundamental though# 
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| Author: | skydyr [ Tue Mar 10, 2015 1:15 pm ] |
| Post subject: | Re: The way to BlackBelt |
Elom wrote: Is  here necessary, helpful, neutral, poor, or actively harmful?
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| Author: | Sennahoj [ Wed Mar 11, 2015 2:00 am ] |
| Post subject: | Re: The way to BlackBelt |
Elom wrote: And if black continues? |
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| Author: | Elom [ Thu Mar 12, 2015 7:45 am ] |
| Post subject: | Re: The way to BlackBelt |
skydyr wrote: Elom wrote: Is here necessary, helpful, neutral, poor, or actively harmful?Neutral (if black plays at 4 directly, the double empty triangle move works(!) and it transposes back to this position, if black thinks the four stones need not be sacrificed, I believe), but yes, it would be better form to play at directly Sennahoj wrote: Elom wrote: Yes, I overlooked this! However, after seeing this move, I'm struggling to find a way to kill white (my feeling is that it's a ko). Sorry for the two-day reply (the connection went out) |
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| Author: | Sennahoj [ Fri Mar 13, 2015 2:13 am ] |
| Post subject: | Re: The way to BlackBelt |
I guess black can just finish things on this side with , for white to connect under with  is endgame |
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| Author: | Elom [ Wed Mar 25, 2015 9:42 am ] |
| Post subject: | Re: The way to BlackBelt |
Sennahoj wrote: I guess black can just finish things on this side with , for white to connect under with is endgame Sorry for the long delay! Yes, this seems to be the correct result .White seems to only accquire around ten points in gote, so it's unlikely it would have changed the course of the game .After three months of litte over-the-board combat, the somewhat ridiculous (arrogant? ) 4d goal is still being chased, so far through study, although the main problem to cure may be tackling the disorganisation of my stones. While one doesn't want to start making statements about being so much more fearsome after training for a minute or two, I do feel just a little stronger. Best to balance this off with a hayago game (I can flood the sgf, yay!) illustrating just how much work that needs to be done: |
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| Author: | Elom [ Sat Apr 11, 2015 2:45 am ] | ||
| Post subject: | Re: The way to BlackBelt | ||
It has taken a while to organise my play, hoping for better quality games. This is short game, but situations like the one at move 82 aren't easy, so I put it up in spite of that. (added some notes)
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| Author: | Uberdude [ Sat Apr 11, 2015 5:23 am ] |
| Post subject: | Re: The way to BlackBelt |
If you play atari you should have a good plan for if your opponent extends. |
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| Author: | Bill Spight [ Sat Apr 11, 2015 9:11 am ] |
| Post subject: | Re: The way to BlackBelt |
A couple of comments. Main focus: Play more solidly. |
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| Author: | Elom [ Sun Apr 12, 2015 4:19 am ] |
| Post subject: | Re: The way to BlackBelt |
Thanks for the comments! It seems I'm not searching for calmer, solid moves enough. You're right about 84, it was a complete concentration lapse (one silently exclaims after clicking the mouse!) |
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| Author: | Elom [ Sat Apr 25, 2015 10:00 am ] |
| Post subject: | Re: The way to BlackBelt |
A rather interesting thing happened in this game. I hadn't played in a small while, and just played two games, this is the second one: This once happened in a game when I was ddk, before I learned the importance of counting. My opponent had to point it out after I resigned! |
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| Author: | Elom [ Sat May 16, 2015 5:02 am ] |
| Post subject: | Re: The way to BlackBelt |
Today an interesting position came up, it now becoming one of the few times I remember having to play a reducing move-- Usually it's the other way around. /rant alert/ At this point in the game, it appears to be the case that white must play a move to counter the black moyou. However, I can't decide exactly which move is best, even up untill now. It feels as if there are many options for white. In the actuall game, I did something unforgivable on the right side ! And if that wasn't enough, white took gote for seven points! On the bright side, another interesting position arose.In the post-mortem I considered a and b as possibly being miai or complementary, but in the actual game I touched down upon z (!) worried that my previous plays had allowed black to take back 1-2 handicap stones, which ended in disasater when white made an overplay on the upper side. /end of unnecessary rant about mistakes/ So, where would you consider playing? Hopefully I can pick up some of the wisdom relatin to Positional Judgment
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| Author: | Bki [ Sat May 16, 2015 5:13 am ] |
| Post subject: | Re: The way to BlackBelt |
I am weaker than you, but for the first diagram I would play somewhere around tengen, as it would have to direction to connect with a strong white group, and then you may be able to aim at further reduction once you don't have to worry about life anymore. On the second, z will likely have trouble living, as there's absolutely no aji to be found in black's wall. a can aim at a further invasion on the bottom side, but b would likely induce less damage to white's own position on the left. Alternatively, I think an invasion of the bottom may be possible, as you can threaten to connect with the bottom right white group, and there seems to be a few forcing moves against the bottom left black group. Then simply expend into the centre from the top and the left and this should be enough to win. |
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| Author: | Elom [ Sun May 17, 2015 8:46 am ] |
| Post subject: | Re: The way to BlackBelt |
Bki wrote: I am weaker than you, but for the first diagram I would play somewhere around tengen, as it would have to direction to connect with a strong white group, and then you may be able to aim at further reduction once you don't have to worry about life anymore. On the second, z will likely have trouble living, as there's absolutely no aji to be found in black's wall. a can aim at a further invasion on the bottom side, but b would likely induce less damage to white's own position on the left. Alternatively, I think an invasion of the bottom may be possible, as you can threaten to connect with the bottom right white group, and there seems to be a few forcing moves against the bottom left black group. Then simply expend into the centre from the top and the left and this should be enough to win. Thanks for your notes! Yes, z was in all probability an overplay, as far as I'm currently able to tell. It seems very difficult to find a way to invade on the bottom directly, but playing near a first seems to make it possible. It seems that if all of the centre became black, black would win by approximately 20 points, so a feels playable. For the first diagram, it does seem that one could play in the centre, as black's lead doesn't seem too large
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| Author: | Charles Matthews [ Mon May 18, 2015 8:02 am ] |
| Post subject: | Re: The way to BlackBelt |
Elom wrote: At this point in the game, it appears to be the case that white must play a move to counter the black moyou. However, I can't decide exactly which move is best, even up untill now. It feels as if there are many options for white. Indeed. But it is not a straightforward "reduction problem" issue, quite. White appears to have conventional plays like ''a'', ''b'' and ''c''. Black has options on ''p'' (gote), and ''q'' (very likely sente, i.e. kikashi). The virtue of ''a'', which I would look at first, is that it stops Black pushing along for further influence, and even an attack against the upper side group. A straight reduction play around ''b'' is kind of the textbook thing, but the position is sensitive to other things. Besides, what is the score right now? The trouble with this position, to me, is that this sequence looks winning for Black. Black having 10+ in the top left, needs only to aim for 25+ on the lower side, 20+ in the top right, to win. In other words here may be open ended, but not enough so.This might be about what White can do, but it will be a hard struggle in the centre, and Black likely gets to play the ''p''+''q'' combination on the right side for territory there. Well, anyway, my judgement is that White doesn't have enough territory to play calmly. |
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| Author: | Bill Spight [ Mon May 18, 2015 9:08 am ] |
| Post subject: | Re: The way to BlackBelt |
To second what Charles says: Remember the saying that the second line is the line of defeat? Black has played 3 stones on the second line, 1 on the first; White has played 12, count'em, 12 stones on the second line. In addition  is very well placed. In short, White is playing catch up against an opponent with few chinks in his armor.A center reduction at or around  is fairly normal play, as is "a", as Charles indicates. But things are more desperate. is an overplay, but normal play is a loser.A play like may evoke a passive response. Things are desperate.
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, it seems that white can use the sequence a-b-c, and if black cuts white off with d or k, I think white can come back to e, and in response to black f, I [i]think[i] that white can use the g-h exchange before coming back to i. therefore, according to the above, black should respond to 