punishing joseki

If you're new to the game and have questions, post them here.
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: punishing joseki

Post by HermanHiddema »

A few points:

  1. Just because you have never seen a certain move before does not mean it is not joseki
  2. Sometimes, a move that is not normally considered joseki is playable due to unusual circumstances.
  3. For some joseki deviations, the "punishment" is a one or two point gain in the endgame.
  4. Other deviations are inferior only because they leave more aji. Trying to punish them immediately is probably aji-keshi.
hyperpape
Tengen
Posts: 4382
Joined: Thu May 06, 2010 3:24 pm
Rank: AGA 3k
GD Posts: 65
OGS: Hyperpape 4k
Location: Caldas da Rainha, Portugal
Has thanked: 499 times
Been thanked: 727 times

Re: punishing joseki

Post by hyperpape »

malweth wrote:CXUD - at 20k, if you know 10 basic joseki you're ahead of the game. Don't worry about joseki until you're at least SDK. Punishing joseki is easily a dan level topic.
I don't get these kinds of comments. Easy example: 5 kyus should know the following :b5: is bad and the punishment.

Click Here To Show Diagram Code
[go]$$B
$$ --------------------
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . 5 4 2 . . |
$$ , . . . . . X X . . |
$$ . . . . . . . . . . |
$$ . . . . . . . O . . |
$$ . . . . . . . . . . |
$$ . . . . . . . 1 . . |
$$ . . . . . . . . . . |
$$ , . . . . . , . . . |[/go]
p2501
Lives in gote
Posts: 598
Joined: Tue Jul 26, 2011 8:25 am
Rank: 4 kyu
GD Posts: 0
Universal go server handle: p2501
Location: Germany, Berlin
Has thanked: 331 times
Been thanked: 101 times

Re: punishing joseki

Post by p2501 »

hyperpape wrote:
malweth wrote:CXUD - at 20k, if you know 10 basic joseki you're ahead of the game. Don't worry about joseki until you're at least SDK. Punishing joseki is easily a dan level topic.
I don't get these kinds of comments. Easy example: 5 kyus should know the following :b5: is bad and the punishment.

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


Sorry for being off topic, but is this correct? :
Click Here To Show Diagram Code
[go]$$B
$$ --------------------
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . 5 4 2 6 . |
$$ , . . . . 8 X 3 7 . |
$$ . . . . . . . . . . |
$$ . . . . . . . O . . |
$$ . . . . . . . . . . |
$$ . . . . . . . 1 . . |
$$ . . . . . . . . . . |
$$ , . . . . . , . . . |[/go]

After white 8 black has failed confining white into the corner and will lose either 5 or 3+7.
hyperpape
Tengen
Posts: 4382
Joined: Thu May 06, 2010 3:24 pm
Rank: AGA 3k
GD Posts: 65
OGS: Hyperpape 4k
Location: Caldas da Rainha, Portugal
Has thanked: 499 times
Been thanked: 727 times

Re: punishing joseki

Post by hyperpape »

It's just now occurring to me that there was an in depth discussion of this move here on L19, and that it's actually quite complicated. But that's one punishment.

Maybe a bad example.
gowan
Gosei
Posts: 1628
Joined: Thu Apr 29, 2010 4:40 am
Rank: senior player
GD Posts: 1000
Has thanked: 546 times
Been thanked: 450 times

Re: punishing joseki

Post by gowan »

p2501 wrote:
hyperpape wrote:
malweth wrote:CXUD - at 20k, if you know 10 basic joseki you're ahead of the game. Don't worry about joseki until you're at least SDK. Punishing joseki is easily a dan level topic.
I don't get these kinds of comments. Easy example: 5 kyus should know the following :b5: is bad and the punishment.

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


Sorry for being off topic, but is this correct? :
Click Here To Show Diagram Code
[go]$$B
$$ --------------------
$$ . . . . . . . . . . |
$$ . . . . . . . . . . |
$$ . . . . . 5 4 2 6 . |
$$ , . . . . 8 X 3 7 . |
$$ . . . . . . . . . . |
$$ . . . . . . . O . . |
$$ . . . . . . . . . . |
$$ . . . . . . . 1 . . |
$$ . . . . . . . . . . |
$$ , . . . . . , . . . |[/go]

After white 8 black has failed confining white into the corner and will lose either 5 or 3+7.


There is a lot of material on this on Sensei's Library: http://senseis.xmp.net/?44PointOneSpace ... terception See the section on "Mistakes" towards the bottom of the page. Part of the problem is that the hane at b5 is the "mistake" but it has been played in pro games (see remark at the top of the SL page). The moral of this story is that mistakes might not be mistakes, and punishment of even fairly simple mistakes can be very complicated.
User avatar
daniel_the_smith
Gosei
Posts: 2116
Joined: Wed Apr 21, 2010 8:51 am
Rank: 2d AGA
GD Posts: 1193
KGS: lavalamp
Tygem: imapenguin
IGS: lavalamp
OGS: daniel_the_smith
Location: Silicon Valley
Has thanked: 152 times
Been thanked: 330 times
Contact:

Re: punishing joseki

Post by daniel_the_smith »

hyperpape wrote:
malweth wrote:CXUD - at 20k, if you know 10 basic joseki you're ahead of the game. Don't worry about joseki until you're at least SDK. Punishing joseki is easily a dan level topic.
I don't get these kinds of comments. Easy example: 5 kyus should know the following :b5: is bad and the punishment.

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


I was kinda hoping someone would bring this up as an example. The thing is, 5 is not always a mistake, and if it is, the punishment is only worth a couple points (assuming black doesn't play the disastrous continuation that 5k's like to play).
That which can be destroyed by the truth should be.
--
My (sadly neglected, but not forgotten) project: http://dailyjoseki.com
hyperpape
Tengen
Posts: 4382
Joined: Thu May 06, 2010 3:24 pm
Rank: AGA 3k
GD Posts: 65
OGS: Hyperpape 4k
Location: Caldas da Rainha, Portugal
Has thanked: 499 times
Been thanked: 727 times

Re: punishing joseki

Post by hyperpape »

Fair. Even 5kyus should know the disastrous continuation?

I'd also claim that the people playing it aren't playing it because they have any idea that it's appropriate. It's almost always a mistake when we see it. At best it's an ok play that the player doesn't understand.
User avatar
Chew Terr
Gosei
Posts: 2060
Joined: Mon Apr 19, 2010 12:45 pm
Rank: KGS 3k
GD Posts: 264
KGS: Chew
Location: Texas
Has thanked: 546 times
Been thanked: 172 times
Contact:

Re: punishing joseki

Post by Chew Terr »

hyperpape wrote:Fair. Even 5kyus should know the disastrous continuation?


I'd say it's more a matter of knowing there IS a disastrous continuation. If you know that one is there, then you'll only play it when you have a real reason to prefer it, like 'Oh, I have this stone really close, so it looks like my stones won't be able to be split/cut off too badly (ideally if you can read the followup, but regardless)'. For novices, I think it's better to play the wrong moves with good ideas behind them than to play the right moves without at least thinking about why.
Someday I want to be strong enough to earn KGS[-].
User avatar
Shaddy
Lives in sente
Posts: 1206
Joined: Sat Apr 24, 2010 2:44 pm
Rank: KGS 5d
GD Posts: 0
KGS: Str1fe, Midorisuke
Has thanked: 51 times
Been thanked: 192 times

Re: punishing joseki

Post by Shaddy »

I'm just gonna leave this game between AGA high-dans here...

User avatar
daniel_the_smith
Gosei
Posts: 2116
Joined: Wed Apr 21, 2010 8:51 am
Rank: 2d AGA
GD Posts: 1193
KGS: lavalamp
Tygem: imapenguin
IGS: lavalamp
OGS: daniel_the_smith
Location: Silicon Valley
Has thanked: 152 times
Been thanked: 330 times
Contact:

Re: punishing joseki

Post by daniel_the_smith »

I think Shaddy just blew my mind while making my own point for me...
That which can be destroyed by the truth should be.
--
My (sadly neglected, but not forgotten) project: http://dailyjoseki.com
xed_over
Oza
Posts: 2264
Joined: Mon Apr 19, 2010 11:51 am
Has thanked: 1179 times
Been thanked: 553 times

Re: punishing joseki

Post by xed_over »

hyperpape wrote: Even 5kyus should know the disastrous continuation?

I guess that's whats holding me back from crossing that line... I don't know it.
aconley
Dies in gote
Posts: 45
Joined: Sat Jun 05, 2010 8:20 am
Rank: KGS 4k
GD Posts: 0
KGS: Baldanders
Has thanked: 2 times
Been thanked: 12 times

Re: punishing joseki

Post by aconley »

I do see this happen a lot in my games (right around that 5-7k level),
so it is worth knowing. Sometimes Black even tries to save the cutting
stones and ends up losing the stones at the top.

Click Here To Show Diagram Code
[go]$$B
$$---------------
$$| . . . . . . . . .
$$| . . O O X . . X .
$$| . . O X X O . . .
$$| . . O X . . . . .
$$| . 1 X 2 . . . . .
$$| . . O . . . . . .
$$| . . . . . . . . .[/go]
User avatar
EdLee
Honinbo
Posts: 8859
Joined: Sat Apr 24, 2010 6:49 pm
GD Posts: 312
Location: Santa Barbara, CA
Has thanked: 349 times
Been thanked: 2070 times

Post by EdLee »

aconley wrote:
Click Here To Show Diagram Code
[go]$$B
$$---------------
$$| . . . . . . . . .
$$| . . O O X . . B .
$$| . . O X X O . a .
$$| . . O X . . . . .
$$| . 1 X 2 . . . . .
$$| . . O . . . . . .
$$| . . . . . . . . .[/go]
You probably meant :bc: at (a) ? :)
aconley
Dies in gote
Posts: 45
Joined: Sat Jun 05, 2010 8:20 am
Rank: KGS 4k
GD Posts: 0
KGS: Baldanders
Has thanked: 2 times
Been thanked: 12 times

Re: punishing joseki

Post by aconley »

Oops, yes.
User avatar
malweth
Dies in gote
Posts: 62
Joined: Sat Jul 17, 2010 3:04 am
Rank: 0k
GD Posts: 2308
OGS: Kabit
Location: Boston, MA
Has thanked: 20 times
Been thanked: 14 times

Re: punishing joseki

Post by malweth »

xed_over wrote:
hyperpape wrote: Even 5kyus should know the disastrous continuation?

I guess that's whats holding me back from crossing that line... I don't know it.


I have crossed that line and don't know it.

I still think an intensive study of Joseki is significantly less helpful to the DDK than the SDK. I also think it's somewhat less helpful to the SDK than the dan player. (And continuing that line of thought, it's a bit less helpful to the dan player than the pro player, but that may not be true - I have no basis).

hyperpape wrote:
malweth wrote:CXUD - at 20k, if you know 10 basic joseki you're ahead of the game. Don't worry about joseki until you're at least SDK. Punishing joseki is easily a dan level topic.
I don't get these kinds of comments. Easy example: 5 kyus should know the following :b5: is bad and the punishment.

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


Understand that:

:b1: The only advice any of us can give is based on our own personal experience (there's no rulebook here).
:w2: Two players of the same level can have widely varying experiences. This is especially true in the kyu ranks.
:b3: The OP was listed as 20k, not 5k. Further, after CXUD clarified his rank, he is still not 5k. A 5k player can certainly engage in "dan level topics." Perhaps levels of SDK are determined by how many higher level topics have been studied.

Even when referring to books on the subject, pro players or scientists do not always agree.

My overall advice: listen to everyone, ignore everyone, and make a plan that you'll enjoy the most.

Code: Select all

  ()()
=(-,-)=
(")_(")      ~ Tarah ~
Post Reply