L19 2011/2012 tournament: PAIRINGS and RESULTS

User avatar
quantumf
Lives in sente
Posts: 844
Joined: Tue Apr 20, 2010 11:36 pm
Rank: 3d
GD Posts: 422
KGS: komi
Has thanked: 180 times
Been thanked: 151 times

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by quantumf »

gaius wrote:I think playing with the idea that you "should be leading" is a bad idea, even if your several stones stronger. At least for me, this nagging feeling that I should come out ahead of any battle against a weaker opponent is the number 1 reason for losing unnecessarily against weaker players. Sometimes, they just play good moves and 50/50 is OK :)


Note also that in a tournament players raise their game, particularly if they're the lower ranked player.
User avatar
Magicwand
Tengen
Posts: 4844
Joined: Wed Apr 21, 2010 5:26 am
Rank: Wbaduk 7D
GD Posts: 0
KGS: magicwand
Tygem: magicwand
Wbaduk: rlatkfkd
DGS: magicwand
OGS: magicwand
Location: Mechanicsburg, PA
Has thanked: 62 times
Been thanked: 504 times

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by Magicwand »

if white cut as below...black will be in trouble.
i will have to think about why...but i know the answer is to cut.
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 2 . . . . . . . . . . . X . . . |
$$ | . . O X . . . . . X . . . . . , . . . |
$$ | . . O X . O . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
"The more we think we know about
The greater the unknown"

Words by neil peart, music by geddy lee and alex lifeson
User avatar
gaius
Lives in gote
Posts: 476
Joined: Tue Apr 27, 2010 2:55 am
Rank: Dutch 2 dan
GD Posts: 56
KGS: hopjesvla
Has thanked: 193 times
Been thanked: 83 times

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by gaius »

Magicwand, I don't see the trouble yet... What can white do?
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 2 . . . . . . . . . . . X . . . |
$$ | . . O X . . . . . X . . . . . , . . . |
$$ | . . O X . O . . . . . . . . . . . . . |
$$ | . 4 3 5 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

Well, white can live in the corner. Woohoo, that's at least 2 points of cash in the pocket! ;)
Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 4 . . . . . . . . . . . . . . . . |
$$ | . 3 2 . . . . . . . . . . . . . . . . |
$$ | . 1 X O 6 . . . . . . . . . . X . . . |
$$ | . . O X . . . . . X . . . . . , . . . |
$$ | . . O X . O . . . . . . . . . . . . . |
$$ | . O X X . . . . . . . . . . . . . . . |
$$ | . 5 . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
My name is Gijs, from Utrecht, NL.

When in doubt, play the most aggressive move
User avatar
ez4u
Oza
Posts: 2414
Joined: Wed Feb 23, 2011 10:15 pm
Rank: Jp 6 dan
GD Posts: 0
KGS: ez4u
Location: Tokyo, Japan
Has thanked: 2351 times
Been thanked: 1332 times

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by ez4u »

Most analysis has White descending first and only cutting if Black descends in turn. See this page on SL. However the idea of blocking above and letting White turn is simply saying that Black blocked on the wrong side to begin with.
Dave Sigaty
"Short-lived are both the praiser and the praised, and rememberer and the remembered..."
- Marcus Aurelius; Meditations, VIII 21
User avatar
Magicwand
Tengen
Posts: 4844
Joined: Wed Apr 21, 2010 5:26 am
Rank: Wbaduk 7D
GD Posts: 0
KGS: magicwand
Tygem: magicwand
Wbaduk: rlatkfkd
DGS: magicwand
OGS: magicwand
Location: Mechanicsburg, PA
Has thanked: 62 times
Been thanked: 504 times

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by Magicwand »

that is why i told you that i have to think about it :)

your second diag is only possible in ddk relm.

so... how about below? i also have to think about this but..i am thinking it will be better for white than plain joseky.
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 2 6 . . . . . . . . . . X . . . |
$$ | . . O X . . . . . X . . . . . , . . . |
$$ | . . O X . O . . . . . . . . . . . . . |
$$ | . 4 3 5 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]



Click Here To Show Diagram Code
[go]$$Bc plain joseky
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 6 . . . . . . . . . . . . . . . . |
$$ | . . . 1 . . . . . . . . . . . X . . . |
$$ | . . O X . . . . . X . . . . . , . . . |
$$ | . . O X 5 O . . . . . . . . . . . . . |
$$ | . . 4 2 3 . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
"The more we think we know about
The greater the unknown"

Words by neil peart, music by geddy lee and alex lifeson
Marcus
Gosei
Posts: 1387
Joined: Tue Apr 20, 2010 8:51 am
GD Posts: 209
KGS: Marcus316
Has thanked: 139 times
Been thanked: 111 times

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by Marcus »

Magicwand wrote:if white cut as below...black will be in trouble.
i will have to think about why...but i know the answer is to cut.
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 2 . . . . . . . . . . . X . . . |
$$ | . . O X . . . . . X . . . . . , . . . |
$$ | . . O X . O . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


This is one of my favourite positions. There's one more thing to do before the cut, though. I know two variations (hidden for brevity):

Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 a . . . . . . . . . . . X . . . |
$$ | . . O X . . . . . X . . . . . , . . . |
$$ | . . O X . O . . . . . . . . . . . . . |
$$ | . . 2 b . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


If Black tries to separate (b), White can cut.

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


So, Black can protect the cut, and White gets a large(-ish) corner.

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


Second variation:
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 a . . . . . . . . . . . X . . . |
$$ | . . O X . . . . . X . . . . . , . . . |
$$ | . . O X . O . . . . . . . . . . . . . |
$$ | . . . 2 b . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


A similar position. Black can still protect the cut (a), and again, White gets a large corner:

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


The other option for Black is the following:

Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 6 . . . . . . . . . . . . . . . . |
$$ | . a 1 b . . . . . . . . . . . X . . . |
$$ | . . O X . . . . . X . . . . . , . . . |
$$ | . . O X 5 O . . . . . . . . . . . . . |
$$ | . . 4 2 3 . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


:w6: is a nice tesuji. Black can't play at 'a':

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


Black is in trouble here. Instead, Black should play at :w2: ...

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


In the typical joseki, Black does not exchange :bs: for :w2: ... a slight advantage for White over the usual joseki, as Black has wasted some aji.
User avatar
gaius
Lives in gote
Posts: 476
Joined: Tue Apr 27, 2010 2:55 am
Rank: Dutch 2 dan
GD Posts: 56
KGS: hopjesvla
Has thanked: 193 times
Been thanked: 83 times

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by gaius »

ez4u, of course I know that your analysis usually does apply, and usually the hane is bad. But how about this case? I see this:
1) :b1: and :b3: have a beautiful relationship with the marked stone.
2) Black has sente to play :b5:, which is huge and makes ALL black stones work together.
3) Black can still look forward to a move like 'a', to connect all the stones and make the moyo reach out over the whole board.
4) If black would've blocked on the other side to begin with, that would have been gote.

Is really everybody disagreeing with me here?
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 5 . . . |
$$ | . . . B . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 3 . . a . . . . . . . . X . . . |
$$ | . . O X . . . . . X . . . . . , . . . |
$$ | . . O X . O . . . . . . . . . . . . . |
$$ | . . 2 4 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


@Magicwand:
That second diagramme was more like a joke of course :)

But is your variation really playable?? I just see white dying with no compensation. There is not even a decent squeeze, I think.
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . 9 8 . . . . . . . . . . . . . . . . |
$$ | . 7 1 2 6 . . . . . . . . . . X . . . |
$$ | . . O X . . . . . X . . . . . , . . . |
$$ | . . O X . O . . . . . . . . . . . . . |
$$ | . 4 3 5 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
My name is Gijs, from Utrecht, NL.

When in doubt, play the most aggressive move
User avatar
HermanHiddema
Gosei
Posts: 2011
Joined: Tue Apr 20, 2010 10:08 am
Rank: Dutch 4D
GD Posts: 645
Universal go server handle: herminator
Location: Groningen, NL
Has thanked: 202 times
Been thanked: 1086 times

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by HermanHiddema »

I think the next round can start, right?
User avatar
topazg
Tengen
Posts: 4511
Joined: Wed Apr 21, 2010 3:08 am
Rank: Nebulous
GD Posts: 918
KGS: topazg
Location: Chatteris, UK
Has thanked: 1579 times
Been thanked: 650 times
Contact:

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by topazg »

gaius wrote:Is really everybody disagreeing with me here?


Sounds like it's a comparison between:

Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 5 . . . |
$$ | . . . B . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 3 . . a . . . . . . . . X . . . |
$$ | . . O X . . . . . X . . . . . , . . . |
$$ | . . O X . O . . . . . . . . . . . . . |
$$ | . . 2 4 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


and:

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


I'm not strong enough to say, but it feels like swings and roundabouts to me.
User avatar
perceval
Lives in gote
Posts: 312
Joined: Thu Aug 05, 2010 3:35 am
Rank: 7K KGS
GD Posts: 0
KGS: tictac
Has thanked: 52 times
Been thanked: 41 times

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by perceval »

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


I'm not strong enough to say, but it feels like swings and roundabouts to me.

why is :w2: needed in that situation? can B kill otherwise ?
sente seems pretty big here so i would be tempted to tenuki as W if my corner can stay alive
In theory, there is no difference between theory and practice. In practice, there is.
User avatar
topazg
Tengen
Posts: 4511
Joined: Wed Apr 21, 2010 3:08 am
Rank: Nebulous
GD Posts: 918
KGS: topazg
Location: Chatteris, UK
Has thanked: 1579 times
Been thanked: 650 times
Contact:

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by topazg »

It's not necessary in an absolute sense, but this is pretty painful locally:

Click Here To Show Diagram Code
[go]$$Bc (Ladder requirement notwithstanding)
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . X X 1 . . . . X . . . . . , . . . |
$$ | . . O O 3 O 9 . . . . . . . . . . . . |
$$ | . . 6 5 4 7 . . . . . . . . . . . . . |
$$ | . . . 8 . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]


Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . X . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . X . . . |
$$ | . . X X 1 . . . . X . . . . . , . . . |
$$ | . . O O 3 O . . . . . . . . . . . . . |
$$ | . . 7 5 4 6 . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
User avatar
ez4u
Oza
Posts: 2414
Joined: Wed Feb 23, 2011 10:15 pm
Rank: Jp 6 dan
GD Posts: 0
KGS: ez4u
Location: Tokyo, Japan
Has thanked: 2351 times
Been thanked: 1332 times

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by ez4u »

HermanHiddema wrote:I think the next round can start, right?

Before all the other questions, I think this is key. The rounds have been slower than expected. Can we make some progress before 2012 rolls around? :)
Dave Sigaty
"Short-lived are both the praiser and the praised, and rememberer and the remembered..."
- Marcus Aurelius; Meditations, VIII 21
User avatar
ez4u
Oza
Posts: 2414
Joined: Wed Feb 23, 2011 10:15 pm
Rank: Jp 6 dan
GD Posts: 0
KGS: ez4u
Location: Tokyo, Japan
Has thanked: 2351 times
Been thanked: 1332 times

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by ez4u »

gaius wrote:ez4u, of course I know that your analysis usually does apply, and usually the hane is bad. But how about this case? I see this:
1) :b1: and :b3: have a beautiful relationship with the marked stone.
2) Black has sente to play :b5:, which is huge and makes ALL black stones work together.
3) Black can still look forward to a move like 'a', to connect all the stones and make the moyo reach out over the whole board.
4) If black would've blocked on the other side to begin with, that would have been gote.

Is really everybody disagreeing with me here?
Click Here To Show Diagram Code
[go]$$Bc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 5 . . . |
$$ | . . . B . . . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . 1 3 . . a . . . . . . . . X . . . |
$$ | . . O X . . . . . X . . . . . , . . . |
$$ | . . O X . O . . . . . . . . . . . . . |
$$ | . . 2 4 . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]

...

I don't claim to really understand this stuff, but it seems to me that although Black has some nice frameworks here and there, he actually has no territory. Is it going to be enough? I think that White has all kinds of invasion points (see 'a' below). Also Black has some difficulty in how to close the bottom right - it has a poor relationship with the bottom left because White has an easy slide along the bottom. :b5: in the diagram above (marked stone below) might be better at 'b' because it would leave a follow-up play at 'c'. After :w1: below, I would not feel very worried as White, since the pressure would be on Black to show how to profit from the plays so far. (P.S. I just got back from dinner with a friend, so if none of this makes sense I blame it on the 2 1/2 bottles of wine consumed. :blackeye:)
Click Here To Show Diagram Code
[go]$$Wc
$$ ---------------------------------------
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . 1 . . . |
$$ | . . . O . O . . . , . . . . . , . . . |
$$ | . . . . . . . . . . . . . . . . O . . |
$$ | . . X . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . c . . |
$$ | . . a . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . B . . . |
$$ | . . . X . . . . . , . . . . . b . . . |
$$ | . . . . . . . . . . . . . . . a . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . a . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ | . . X X . . . . . . . . . . . X . . . |
$$ | . . O X . . . . . X . . . . . , . . . |
$$ | . . O X . O . . . . . . . . . a a . . |
$$ | . . O O . . . . . . . . . . . . . . . |
$$ | . . . . . . . . . . . . . . . . . . . |
$$ ---------------------------------------[/go]
Dave Sigaty
"Short-lived are both the praiser and the praised, and rememberer and the remembered..."
- Marcus Aurelius; Meditations, VIII 21
User avatar
Joaz Banbeck
Judan
Posts: 5546
Joined: Sun Dec 06, 2009 11:30 am
Rank: 1D AGA
GD Posts: 1512
Kaya handle: Test
Location: Banbeck Vale
Has thanked: 1080 times
Been thanked: 1434 times

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by Joaz Banbeck »

HermanHiddema wrote:I think the next round can start, right?


Yes, it can. But October 17th is a big day for taxes ( April 15 plus the standard 6-month extension plus a weekend ) So, I'll probably not have pairings up until the 18th or late on the 17th.
Help make L19 more organized. Make an index: https://lifein19x19.com/viewtopic.php?f=14&t=5207
User avatar
Aphelion
Lives in sente
Posts: 766
Joined: Thu Apr 22, 2010 12:14 pm
Rank: KGS 4 kyu
GD Posts: 227
KGS: Aphelion02
Has thanked: 24 times
Been thanked: 59 times

Re: L19 2011 tournament: PAIRINGS and RESULTS

Post by Aphelion »

Why aren't the pairings automated, like almost all tournaments are? I think this will do a great deal to minimize effort and have the tournament move along faster.
Post Reply