Life In 19x19

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A review would be appreiciated

https://lifein19x19.com/viewtopic.php?t=17067

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A review would be appreiciated

Posted: Tue Nov 19, 2019 2:57 pm
by Echia
I would appreiciate a review of this game I lost. I was black


[sgf]https://lifein19x19.com/download/file.php?id=12098[/sgf]

Re: A review would be appreiciated

Posted: Tue Nov 19, 2019 3:27 pm
by Bill Spight
Sorry, I don't know how to link to eidogo.

This doesn't work.

{sgf}http://eidogo.com/ALWDP5d.sgf{/sgf}

Posted: Tue Nov 19, 2019 3:41 pm
by EdLee
Hi Echia -- it takes a few moments and is worth it to learn how to use the [SGF] tags --
include the entire SGF text here; don't rely on external links because then you're at the mercy of one additional failure:

Re:

Posted: Tue Nov 19, 2019 4:07 pm
by Bill Spight
EdLee wrote:Hi Echia -- it takes a few moments and is worth it to learn how to use the [SGF] tags --
include the entire SGF text here; don't rely on external links because then you're at the mercy of one additional failure:
Thanks, Ed. :)

Unfortunately, the first post in the topic of posting SGF files says this:
The preferred method is to refer to the SGF file by URL. For example, you can link to a game from the KGS archives.
That works for KGS, because the link is to an SGF file. That detail might well be lost on a new member. Curiously, you can download an SGF file from Eidogo but you can't link to one. I guess they produce the SGF file on the fly when you download.

Anyway, things could be made clearer.

Posted: Tue Nov 19, 2019 4:35 pm
by EdLee
Hi Bill, Thanks. :)

I know. The whole give one fish or teach fishing thing. :batman: :mrgreen:

Re: A review would be appreiciated

Posted: Tue Nov 19, 2019 6:35 pm
by Bill Spight
Hi, Ed. :)

That's not what I had in mind.

Re: A review would be appreiciated

Posted: Wed Nov 20, 2019 2:01 am
by jlt
A few remarks, with the assistance of Katago:

At move 15, approaching the corner (a or b) is 2-3 points better than playing on the side. Generally speaking, if there is no urgent move on the board, approaching a 3-4 point is often the best move.
Click Here To Show Diagram Code
[go]$$B
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . X . . |
$$ | . . a b . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . O . . . . . O . . . O . . X . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
At move 19, hane is 3 points better then extend, see the proverb https://senseis.xmp.net/?RespondToAttachmentWithHane (however, beware that proverbs don't always work).
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . . . . . . . |
$$ | . . O . . X . . X . . . . . . . . . . |
$$ | . . . O . O B . . , . . . . . X . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |[/go]
Move 27: the double hane joseki is 4.5 points better. You keep the corner territory, and your opponent gets a ponnuki which is not that useful.
Click Here To Show Diagram Code
[go]$$B
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . 6 . . . . . |
$$ | . . . X . . . . . . . . 4 1 O 5 7 . . |
$$ | . . O . . X X . X . . . . 2 X O O . . |
$$ | . . . O . O O . . , . . . . 3 X X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |[/go]
The sequence after move 41 was catastrophic. Here is a better variation:
Click Here To Show Diagram Code
[go]$$B
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O 5 . . . . . . . . . . . . X . . |
$$ | . 3 1 . . . . . . . . . . . . . . . . |
$$ | . 2 O X X O . . . , . . . . . X . . . |
$$ | . 4 X O O . . . . O . . . O . . X . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Re: A review would be appreiciated

Posted: Wed Nov 20, 2019 2:32 am
by Knotwilg
A few questions:

- what did you learn from this game before offering it for review?
- what did you not understand about this game, so that you offered it for review?
- which kind of things do you want to learn?

Here's what I can offer, based on this game alone, in terms of meaningful takeaways for your next games:
1 - think and take your time

As you probably knew and as mentioned before, :b41: is disastrous. Having your cutting stones captured in a ladder is a major tactical error. There's no point in learning direction of play if you spoil the game this way. In this case, the ladder is very close, so it should have been easy to calculate it. So, I guess you didn't really calculated anything and just cut by instinct. Hence, my first advice is: "in fights, take time to read". This generalizes into "don't play without thinking" or positively stated "think about every move, compute a few alternatives, read a few moves deep".

If the game is played in real life, you can sit on your hands instead of holding a stone. If online, you can sit on your hands instead of holding the mouse. Maybe the game was blitz? Then my recommendation is to stop playing blitz games and go for time settings that allow you to think.

2 - count and fight

After :b41: the game was played out without any visible attempt to come back into the game. White kept a comfortable advantage of 10-20 points. So it seems as if you were either unaware of the score, or you were aware but didn't have the spirit to do something about it. In the first case, take time to count the score. You can do this by visualizing the borders of territories and count the points inside, or by roughly assessing in multiples of 5, or even more roughly by comparing territories on both sides. Even by the latter method, you would have noticed that White was ahead by a major amount.

Maybe you knew this, but then why did you not make an attempt to get back into the game by fighting? Were you waiting for the opponent to blunder? Or did you hope to gradually come back, point by point? In short: what was your strategy after :b41:?
Cheers!

Re: A review would be appreiciated

Posted: Wed Nov 20, 2019 4:15 am
by Uberdude
To link to an sgf file on eidogo with browsing url such as http://eidogo.com/#1qaQKFXsI you need to change it to http://eidogo.com/sgf/1qaQKFXsI.sgf ie add an intermediate sgf directory, remove the leading # from the alphanumeric id, and append '.sgf'.

Then stick that url within 'sgf' tags.

Code: Select all

[sgf]http://eidogo.com/sgf/1qaQKFXsI.sgf[/sgf]
In action:

Re: A review would be appreiciated

Posted: Wed Nov 20, 2019 12:24 pm
by Joaz Banbeck
The decision to invade in the lower left seems poorly timed and small.

At the time that you choose to do it, there are three weak groups on the board:
Click Here To Show Diagram Code
[go]$$ Position at move 34
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . a X . . . . . . . . . O O . . . . |
$$ | . . W . . X X . X . . . X X X O O O . |
$$ | . . . W . W W . . , . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . W . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . @ . . . . . . |
$$ | . . B . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . B . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O b . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . O . . . . . O . . . O . . X . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
1) The circled white group is not precarious, but if you ever play 'a', it is floating. Any move that you make that tends to lock it in turns 'a' into a big sente move.

2) Your circled black group has maybe one eye. If you invade in the corner and compel him to play moves around 'b', it could be in trouble.

3) His stone marked with a square is weak, but if it gets a little support it will neutralize your walls in the upper right.

So I would play something like this:
Click Here To Show Diagram Code
[go]$$ Position at move 34
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . . . . . O O . . . . |
$$ | . . O . . X X . X . . . X X X O O O . |
$$ | . . . O . O O . . , . . . . . X X O . |
$$ | . . . . . . . . . . . . . . . . . X . |
$$ | . . O . . . . 1 . . . . . . . . X . . |
$$ | . . . . . . . . . . . . O . . . . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . O . . . . . . . . . . . . . X . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . , . . . . . , . . . . . X . . . |
$$ | . . . O . . . . . O . . . O . . X . . |
$$ | . . . . . . . . . . . . . . . O . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Note how it changes the status of all of the aforementioned groups: it makes his worse and yours better.
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