OCA's log

ez4u · Post by **ez4u** » Thu Jul 03, 2014 3:39 am

oca wrote:Hi, two games for me yesterday ! I'm black in both game.

...

I'm more interessed on game 2, an 8 stones handicap, where invaders killed me !

...
I handeled white 263 with success, but failed to reply to the final invasion at move white 279 and finaly lose the game (I think 282 at S6 may save the group ).

I'm still happy of my seki at 228, which finally was not a seki anymore...
I had a lot of fun in that game

Any comments very welcome.

If you tenuki after 263, what can White do? If answering is not necessary, we can't call it success. ;-)

You are correct that 282 at S6 would have left White unable to continue. Black would have more liberties than White. :tmbup:

Your comment on 228 isn't clear. Do you realize that you killed the corner with 242? :tmbup:

Click Here To Show Diagram Code: [go]$$Bc $$ --------------------------------------- $$ | . . . . . . . X X O . O O X . X X X X | $$ | . O X O X . . X O O . O X X . X O O O | $$ | . X . X . . . X O . . O X . X X O . O | $$ | . X . X . . X O O X . O . X . X X O . | $$ | X . X . X X X X X O O . O X X O O O X | $$ | O X . X O O O . X X O . O X O X X X 2 | $$ | O O X X X X O O O X O O X O O O O X O | $$ | . . O O X X X X O X X O X X . . O X O | $$ | O . O X X O . X O O O O O X . . O O . | $$ | . . O X X O O O O O O O X X X X X O O | $$ | O . O O O X X X O X X X O O O X . X X | $$ | X O . O X O . X X O . O O O X X . . . | $$ | X O . O X O O O X O X O X O O X . . . | $$ | X X O O X O X X X O . O X X X O O 1 . | $$ | X X X X X X . X . X O O X . . . X X X | $$ | X O O X X X X . X X O O O X X X X O X | $$ | O O . O X O O X X X X O O O X O O O O | $$ | . . O O O O X O O O X O O X O O 3 X X | $$ | . . . . . O X . . O X X X X O 4 X X X | $$ ---------------------------------------[/go]

White's shortage of liberties means death...

Click Here To Show Diagram Code: [go]$$W $$ --------------------------------------- $$ | . . . . . . . X X O . O O X . X X X X | $$ | . O X O X . . X O O . O X X . X O O O | $$ | . X . X . . . X O . . O X . X X O . O | $$ | . X . X . . X O O X . O . X . X X O . | $$ | X . X . X X X X X O O . O X X O O O X | $$ | O X . X O O O O X X O . O X O X X X . | $$ | O O X X X X O O O X O O X O O O O X O | $$ | . . O O X X X X O X X O X X . . O X O | $$ | O . O X X O . X O O O O O X . . O O . | $$ | . . O X X O O O O O O O X X X X X O O | $$ | O . O O O X X X O X X X O O O X . X X | $$ | X O . O X O . X X O . O O O X X . . . | $$ | X O . O X O O O X O X O X O O X . . . | $$ | X X O O X O X X X O . O X X X O O X . | $$ | X X X X X X . X . X O O X . . . X X X | $$ | X O O X X X X . X X O O O X X X X O X | $$ | O O . O X O O X X X X O O O X O O O O | $$ | . . O O O O X O O O X O O X O O . 2 4 | $$ | . . . . . O X . . O X X X X O 1 . 3 . | $$ ---------------------------------------[/go]

oca · Post by **oca** » Thu Jul 03, 2014 4:44 am

Hi Uberdude,

"Don't forget to think about the basics: connect your stones, separate your opponent's."

Sure, I will try to improve that. I think 9x9 is also a good exercice for that.

Hi ez4u,

"If you tenuki after 263, what can White do? If answering is not necessary, we can't call it success."

That's just I usually die at each invasion, but that's right 246 was needed... so that's more a fail in this case ...

"Do you realize that you killed the corner with 242?"

Of course... Not... :shock:

That was seki for me... I was thinking that 6 was unconditionally alive... but not so in the corner... as you showed in your post.

@Edlee

Lots of things for me to look at

...
Let's start with that "connect/separte" topic.

So in Game 1 :

65 - bad shape: W hits the vital point, the elephant's eye.
77 - very bad. See Post 5 again, same note again.

I can see the separation and the elephant's eye, but I don't see what would be better :scratch:

...

Tryed that but that don't look any better to me...

Click Here To Show Diagram Code: [go]$$Wcm64 still separated... $$ ---------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . O . 1 X . . . . . . X O X X X X | $$ | . . . , . O X . . , . . . X O X O O X | $$ | . . . X . O 3 4 6 . . . . X O O O X X | $$ | . . . . . . 7 5 . . . . . . X O O O O | $$ | . . . . X 2 8 . . . . . . . X . O . . | $$ | . . . . . . . . . . . . . . . X X O . |[/go]

Now about these moves :
73 - bad habit. You should have tenuki'd.
91 - same bad habit as

I tryed to avoid that situation :

Click Here To Show Diagram Code: [go]$$Wcm72 73 tenuki $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X 6 . . . . . . . . . . O . | $$ | . . . . . O X 5 . . 7 . . . . . . . . | $$ | . . . . . 1 4 3 . . . . . . . . . . . | $$ ----------------------------------------[/go]

I don't know exactly what to do in that case...
maybe that :b4:

?

Click Here To Show Diagram Code: [go]$$Wcm72 73 tenuki $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X , . . . . . . . . . . O . | $$ | . . . . 7 O X 4 8 . . . . . . . . . . | $$ | . . . . . 1 5 3 6 . . . . . . . . . . | $$ ----------------------------------------[/go]

EdLee · Post by **EdLee** » Thu Jul 03, 2014 3:04 pm

Hi oca,

oca wrote:I can see the separation and the elephant's eye, but I don't see what would be better ...

Good observation.

There are two different issues here: (1) recognition; (2) finding a better move.

Please see also posts 41 and 43 of this thread.

oca wrote:
$$B
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . O . O . . |
$$ . . . . . . . X a . |
$$ , . . X . . X . O . |
$$ . . . . . . . . O . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ --------------------

Click Here To Show Diagram Code
[go]$$B $$ . . . . . . . . . . | $$ . . . . . . . . . . | $$ . . . . . O . O . . | $$ . . . . . . . X a . | $$ , . . X . . X . O . | $$ . . . . . . . . O . | $$ . . . . . . . . . . | $$ . . . . . . . . . . | $$ --------------------[/go]
I considered at "a" but I didn't like it as I was thinking...

Currently, the recognition phase is to help you see that (a) is the only move.

EdLee · Post by **EdLee** » Thu Jul 03, 2014 3:20 pm

oca wrote:Tryed that but that don't look any better to me...
$$Wm64 still separated...
$$ ----------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . X . . . . |
$$ | . . . O . 1 X . . . . . . X O X X X X |
$$ | . . . , . O X . . , . . . X O X O O X |
$$ | . . . X . O 3 4 6 . . . . X O O O X X |
$$ | . . . . . . 7 5 . . . . . . X O O O O |
$$ | . . . . X 2 8 . . . . . . . X . O . . |
$$ | . . . . . . . . . . . . . . . X X O . |

Click Here To Show Diagram Code
[go]$$Wm64 still separated... $$ ---------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . O . 1 X . . . . . . X O X X X X | $$ | . . . , . O X . . , . . . X O X O O X | $$ | . . . X . O 3 4 6 . . . . X O O O X X | $$ | . . . . . . 7 5 . . . . . . X O O O O | $$ | . . . . X 2 8 . . . . . . . X . O . . | $$ | . . . . . . . . . . . . . . . X X O . |[/go]

Hi oca, you are correct: this is not better, since you are still making bad shape for Black.

EdLee · Post by **EdLee** » Thu Jul 03, 2014 3:23 pm

oca wrote:I tryed to avoid that situation:
$$Wm72 73 tenuki
$$ | . . X X . . . . . . . . . . O O O . . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . O O X X . . . , . . X . . X . O . |
$$ | . . . O O X 6 . . . . . . . . . . O . |
$$ | . . . . . O X 5 . . 7 . . . . . . . . |
$$ | . . . . . 1 4 3 . . . . . . . . . . . |
$$ ----------------------------------------

Click Here To Show Diagram Code
[go]$$Wm72 73 tenuki $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X 6 . . . . . . . . . . O . | $$ | . . . . . O X 5 . . 7 . . . . . . . . | $$ | . . . . . 1 4 3 . . . . . . . . . . . | $$ ----------------------------------------[/go]

Hi oca, this is also bad. You are still making bad shape for White.

EdLee · Post by **EdLee** » Fri Jul 04, 2014 12:23 am

Hi oca,

We start from a basic example of a broken shape:

Click Here To Show Diagram Code: [go]$$B Broken shape for B $$ . . . . . . . . . . $$ . . . . O . . . . . $$ . . . . O X . . . . $$ . . . X O . . . . . $$ . . . . O . . . . . $$ . . . . . . . . . .[/go]

oca wrote:
$$B
$$ . . . . . . . . . . |
$$ . . . . . O . O . . |
$$ . . . . . . . X a . |
$$ , . . X . . X . O . |
$$ . . . . . . . . O . |
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ --------------------

Click Here To Show Diagram Code
[go]$$B $$ . . . . . . . . . . | $$ . . . . . O . O . . | $$ . . . . . . . X a . | $$ , . . X . . X . O . | $$ . . . . . . . . O . | $$ . . . . . . . . . . | $$ . . . . . . . . . . | $$ --------------------[/go]
I considered at "a" but I didn't like it as I was thinking...

Here, (a) is the only move. Recognition: B (a) makes a broken shape for W.

EdLee · Post by **EdLee** » Fri Jul 04, 2014 12:34 am

Hi oca,

Here is another basic example of a broken shape:

Click Here To Show Diagram Code: [go]$$W Broken shape for B $$ . . . . . . . . . . $$ . . . . O . . . . . $$ . . . X O X . . . . $$ . . . . O . . . . . $$ . . . . . . . . . .[/go]

oca wrote:I tryed to avoid that situation:
$$Wm72 73 tenuki
$$ | . . X X . . . . . . . . . . O O O . . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . O O X X . . . , . . X . . X . O . |
$$ | . . . O O X 6 . . . . . . . . . . O . |
$$ | . . . . . O X 5 . . 7 . . . . . . . . |
$$ | . . . . . 1 4 3 . . . . . . . . . . . |
$$ ----------------------------------------

Click Here To Show Diagram Code
[go]$$Wm72 73 tenuki $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X 6 . . . . . . . . . . O . | $$ | . . . . . O X 5 . . 7 . . . . . . . . | $$ | . . . . . 1 4 3 . . . . . . . . . . . | $$ ----------------------------------------[/go]

Recognition: do you see the broken shape for W in your variation ?

RBerenguel · Post by **RBerenguel** » Fri Jul 04, 2014 12:44 am

Oca, see this. It will be very handy

oca · Post by **oca** » Fri Jul 04, 2014 12:55 am

EdLee wrote:Hi oca,

Here is another basic example of a broken shape:
$$W Broken shape for B
$$ . . . . . . . . . .
$$ . . . . O . . . . .
$$ . . . X O X . . . .
$$ . . . . O . . . . .
$$ . . . . . . . . . .

Click Here To Show Diagram Code
[go]$$W Broken shape for B $$ . . . . . . . . . . $$ . . . . O . . . . . $$ . . . X O X . . . . $$ . . . . O . . . . . $$ . . . . . . . . . .[/go]
oca wrote:I tryed to avoid that situation:
$$Wm72 73 tenuki
$$ | . . X X . . . . . . . . . . O O O . . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . O O X X . . . , . . X . . X . O . |
$$ | . . . O O X 6 . . . . . . . . . . O . |
$$ | . . . . . O X 5 . . 7 . . . . . . . . |
$$ | . . . . . 1 4 3 . . . . . . . . . . . |
$$ ----------------------------------------

Click Here To Show Diagram Code
[go]$$Wm72 73 tenuki $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X 6 . . . . . . . . . . O . | $$ | . . . . . O X 5 . . 7 . . . . . . . . | $$ | . . . . . 1 4 3 . . . . . . . . . . . | $$ ----------------------------------------[/go]
Recognition: do you see the broken shape for W in your variation ?

Hi Edlee,
Yes I see that broken shape for white

Click Here To Show Diagram Code: [go]$$Wc $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X # . . . . . . . . . . O . | $$ | . . . . a Q # Q . . 1 . . . . . . . . | $$ | . . . . . Q # Q . . . . . . . . . . . | $$ ----------------------------------------[/go]

I showed that situation to show what I was afraid of if I was black... white to invade and live [edit] or at least try to...[/edit]. but I just saw that :w1:

doesn't work... white should at least fix "a" first...

Click Here To Show Diagram Code: [go]$$Wc $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X # . 2 . . . . . . . . O . | $$ | . . . . 1 Q # Q . . . . . . . . . . . | $$ | . . . . . Q # Q . . . . . . . . . . . | $$ ----------------------------------------[/go]

and here I suppose I can somehow manage the invaders with a move like :b2:

@RBerenguel, Hi, thanks for the link !

Uberdude · Post by **Uberdude** » Fri Jul 04, 2014 2:58 am

oca wrote:
$$Wc
$$ | . . X X . . . . . . . . . . O O O . . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . O O X X . . . , . . X . . X . O . |
$$ | . . . O O X # . . . . . . . . . . O . |
$$ | . . . . a Q # Q . . 1 . . . . . . . . |
$$ | . . . . . Q # Q . . . . . . . . . . . |
$$ ----------------------------------------

Click Here To Show Diagram Code
[go]$$Wc $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X # . . . . . . . . . . O . | $$ | . . . . a Q # Q . . 1 . . . . . . . . | $$ | . . . . . Q # Q . . . . . . . . . . . | $$ ----------------------------------------[/go]

I showed that situation to show what I was afraid of if I was black... white to invade and live [edit] or at least try to...[/edit]. but I just saw that doesn't work... white should at least fix "a" first...

$$Wc
$$ | . . X X . . . . . . . . . . O O O . . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . O O X X . . . , . . X . . X . O . |
$$ | . . . O O X # . 2 . . . . . . . . O . |
$$ | . . . . 1 Q # Q . . . . . . . . . . . |
$$ | . . . . . Q # Q . . . . . . . . . . . |
$$ ----------------------------------------

Click Here To Show Diagram Code
[go]$$Wc $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X # . 2 . . . . . . . . O . | $$ | . . . . 1 Q # Q . . . . . . . . . . . | $$ | . . . . . Q # Q . . . . . . . . . . . | $$ ----------------------------------------[/go]

and here I suppose I can somehow manage the invaders with a move like

Actually white doesn't need to fix "a" first: those stones are no longer important and can be sacrificed: helping the invaders is a much better idea.

Btw it's interesting that you feared that 1st line invasion of white as it's not something I would even consider. I'm not even sure cutting it off is a good idea for black: it might be better to just fall back or tenuki as it's small.

Click Here To Show Diagram Code: [go]$$Wcm72 73 tenuki $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X , . . . . . . . . . . O . | $$ | . . . . . O X 4 6 8 0 . . . . . . . . | $$ | . . . . . 1 5 3 7 9 . . . . . . . . . | $$ ----------------------------------------[/go]

Note in your variation you played hane with 77 at 78: that doesn't work as white cuts. I hope you can see that just extending is BRILLIANT for black. What is white achieving with this crawling? Trying to win five-in-row?

Something to note is your n4 q4 stones are weak and vulnerable because you missed the hugely important separation at s5 for move 19 so getting them connected and strong like this whilst white crawls along the 1st line is great for you. That 1st line move is an underplay for white and he could do much more severe things like L3 invasion to attack n4 and maybe even g3 cut later or h3 peep.

EdLee · Post by **EdLee** » Fri Jul 04, 2014 3:28 am

oca wrote:I tryed to avoid that situation:
$$Wm72 73 tenuki
$$ | . . X X . . . . . . . . . . O O O . . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . O O X X . . . , . . X . . X . O . |
$$ | . . . O O X 6 . . . . . . . . . . O . |
$$ | . . . . . O X 5 . . 7 . . . . . . . . |
$$ | . . . . . 1 4 3 . . . . . . . . . . . |
$$ ----------------------------------------

Click Here To Show Diagram Code
[go]$$Wm72 73 tenuki $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X 6 . . . . . . . . . . O . | $$ | . . . . . O X 5 . . 7 . . . . . . . . | $$ | . . . . . 1 4 3 . . . . . . . . . . . | $$ ----------------------------------------[/go]

Hi oca,

Another question/problem with your variation
is :w72:

— this is a standard bad habit.
Better is connect directly. See post 26.

Click Here To Show Diagram Code: [go]$$W $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X . . . . . . . . . . . O . | $$ | . . . . 1 O X . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . . . . . . | $$ ----------------------------------------[/go]

oca · Post by **oca** » Fri Jul 04, 2014 3:53 am

Uberdude wrote:...
$$Wcm72 73 tenuki
$$ | . . X X . . . . . . . . . . O O O . . |
$$ | . . . . . . . . . . . . . . . . X O . |
$$ | . . O O X X . . . , . . X . . X . O . |
$$ | . . . O O X , . . . . . . . . . . O . |
$$ | . . . . . O X 4 6 8 0 . . . . . . . . |
$$ | . . . . . 1 5 3 7 9 . . . . . . . . . |
$$ ----------------------------------------

Click Here To Show Diagram Code
[go]$$Wcm72 73 tenuki $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X , . . . . . . . . . . O . | $$ | . . . . . O X 4 6 8 0 . . . . . . . . | $$ | . . . . . 1 5 3 7 9 . . . . . . . . . | $$ ----------------------------------------[/go]

Note in your variation you played hane with 77 at 78: that doesn't work as white cuts. I hope you can see that just extending is BRILLIANT for black. What is white achieving with this crawling? Trying to win five-in-row?

Something to note is your n4 q4 stones are weak and vulnerable because you missed the hugely important separation at s5 for move 19 so getting them connected and strong like this whilst white crawls along the 1st line is great for you. That 1st line move is an underplay for white and he could do much more severe things like L3 invasion to attack n4 and maybe even g3 cut later or h3 peep.

Oh... yes, I start to understand where the problem is...
so back to the original game 1 :

Click Here To Show Diagram Code: [go]$$Wcm72 $$ ---------------------------------------- $$ | . . . . . . . . . . . . . . . . . . . | $$ | . . . . . . . . . . . . . . X . . . . | $$ | . . . O . O X . . . . . . X O X X X X | $$ | . . . , . O X . . , . . . X O X O O X | $$ | . . . X . O X . . . . . . X O O O X X | $$ | . . . . . O a . . . . . . . X O O O O | $$ | . . . . X . . . . . . . . . X . O . . | $$ | . . . . . . . . . . . . . . . X X O . | $$ | . . . . . . . . . . . . . . . X O . O | $$ | . . . , . . . . . , . . . . . , O O . | $$ | . . . . . . . . . . . . . . . X X O . | $$ | . . . . . . . . . . . . . . . . X X . | $$ | . . . . . . . . . . . . . . . X O . . | $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X . b . . . . . . . . . @ . | $$ | . . . 3 . O X . . . . . . . . 4 . 5 . | $$ | . . . . . 1 2 . . . . . . . . . . . . | $$ ----------------------------------------[/go]

I was thinking :b73:

was good move as it secured territory in the bottom... more and more I understand :b73:

secured... pretty much nothing :lol:

I mean I played :b73:

thinking it was sente as white needed to reply with D2, what he did. But then what... If I want to secure territory in the bottom, I still need to fix the other side with something like :b75:

which is gote I think... but my opponenent replyed with that :w76:

so that I can keep sente... but what if he played at :w76:

at "a" ? Then that would be a very different game.... And sure, even after :b75:

, there are still good ways to reduce that bottom like you suggested for example with that peep at "b"...

So given all that, I understand :b73:

is very questionable...
and that tenuki would have been bigger here as once again, :b73:

didn't secure the whole bottom... (if that was the case, I assume that it would be a good move, but not in this case)

Uberdude · Post by **Uberdude** » Fri Jul 04, 2014 4:19 am

Just something else about 73: it can remove your own liberties and become an empty triangle later if white cuts. If black doesn't have the ladder (or doesn't want to give a ladder breaker) then he can extend at 75 rather than ladder at 76. Then if white crawls black 77 is a pleasing hane at head of 2 shape: this fighting is comfortable for black.

Click Here To Show Diagram Code: [go]$$Wcm72 73 tenuki $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X 3 5 6 . . . . . . . . O . | $$ | . . . . . O X 4 . . . . . . . . . . . | $$ | . . . . . 1 . . . . . . . . . . . . . | $$ ----------------------------------------[/go]

If you get the block in sente then you can't hane:

Click Here To Show Diagram Code: [go]$$Wcm72 75 tenuki OOOPS! $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X 5 7 8 . . . . . . . . O . | $$ | . . . . 3 O X 6 9 . . . . . . . . . . | $$ | . . . . . 1 2 . . . . . . . . . . . . | $$ ----------------------------------------[/go]

So black can only extend which could still be ok for him but it's better to be able to hane and reduce white's liberties and get your stones up off the 2nd line.

Click Here To Show Diagram Code: [go]$$Wcm72 75 tenuki $$ | . . X X . . . . . . . . . . O O O . . | $$ | . . . . . . . . . . . . . . . . X O . | $$ | . . O O X X . . . , . . X . . X . O . | $$ | . . . O O X 5 7 . . . . . . . . . O . | $$ | . . . . 3 O X 6 8 . . . . . . . . . . | $$ | . . . . . 1 2 . . . . . . . . . . . . | $$ ----------------------------------------[/go]

oca · Post by **oca** » Fri Jul 04, 2014 6:05 am

So far on game 1 :

Things that I understand :

:b15:

is thin. Jump 1-space to O4 is better.
-> ok just a wrong click.
:w18:

Ridiculous. Huge thank-you move. W should just block S5.
-> I agree

:b19:

equally ridiculous.

There is only one move here.
-> ok (still need to apply)

:w72:

bad habit. Correct local move is just connect E2.
:b73:

bad habit. You should have tenuki'd.
:w90:

same bad habit as :w72:

.

same bad habit as :b73:

.
-> got it (still need to apply)

:b65:

bad shape: W hits the vital point, the elephant's eye.
:b77:

very bad. See Post 5 again, same note again.
-> I recognize these boken shape, still need to find better answers to avoid.

Still to check :

- :b17:

does not work. The move is S4. Study this contact fight.
- :b29:

strange shape. What's your plan if W ataris Q17 ? (Did you read W Q17 atari ? )
- :b41:

to

is not small, but wrong technique.
Maybe wrong plan: what are you trying to accomplish here ?
Can you find the correct move, instead of your :b41:

?

So let's contine with the first one : :b17: does not work. The move is S4. Study this contact fight.

That was allready difficult for me, here are a few ideas, starting with move 17 at S4

Uberdude · Post by **Uberdude** » Fri Jul 04, 2014 7:25 am

What is the purpose of s4? That should help you find the answer to "then I don't really know... that looks complex to me.."

Life In 19x19

OCA's log

Re: OCA's log

Re: OCA's log

Re: OCA's log

Re:

Re: Re:

Re: Re:

Re: OCA's log

Re: OCA's log

Re: OCA's log