Joseki Every DDK Should Know

    Keywords: Opening, Joseki

This is the page where I Eaglehelm will post the Joseki that every DDK should know. Everyone who reads this page must take the Caveat:

Especially in DDK games Joseki are rarely played out, use these to get a feel for the opening, variate from them so you can learn, almost always your opponent will variate from them. These are merely a tool to learn with, not an end-all-be-all of go, try to see what the moves do, this will help you learn to think for your self.

Now for the credits: Major help was provided by KGS user Cookies, he created the list, I thought of the page. When this page is complete there should be about 10-20. Now I just got to get around to entering them in.

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First one.

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Second one. Pt. 1

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Second one. Pt. 2


If black has the Stone with the square he can try this

[Diagram]

Second one. Variation 1.

[Diagram]

Third one.

unkx80: This isn't joseki!
anon: or is it? [1]
Anonymous: No it isn't. Many DDK's think any sequence of moves in a corner is a joseki but that's not the case. Joseki are special sequences of moves which are judged by professional players to give equal results locally. The sequence here in number 3 is clearly better for White, hence not a joseki. White has ideal shape and Black's corner is vulnerable to a 3-3 point invasion. See this SL page 44PointDiagonalAttachmentOneSpaceJumpWithoutPincer

[Diagram]

Fourth one.

[Diagram]

Fifth one.

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Sixth one.

[Diagram]

Seventh one. Part 1.

[Diagram]

Seventh one. Part 2.

[Diagram]

Eighth one.

[Diagram]

Ninth one.

[Diagram]

Tenth one.

[Diagram]

Eleventh one.

[Diagram]

Twelfth one.

[Diagram]

Thirteenth one.


Ten could also be at A.

[Diagram]

Fourteenth one.

[Diagram]

Fifteenth one.

[Diagram]

Sixteenth one.


Andy: Is the third one really joseki? White gets an ideal base and black's corner still has a lot of aji. B3 is the weak player's diagonal and seems only good when there is already a black stone that doesn't allow white to make the full three line extension.

Cookies: Yes, it is usually used when there is a black stone stopping white from having the extension, or a stone that will let black easily go into white's base. Black also took sente and can secure the corner now if he wants, although it is small at the moment.

Eaglehelm: ok, first of all, whoever deleted this comment before, don't do it again, its rude. two, its not called the weak players diagonal when its a connection, only when it is a cut.

Phelan: I checked the page history, and didn't see any deletion of comments.

ThorAvaTahr: Please remove the third sequence it is not joseki and bad for black. Andy is right.

Tapir: Actually you seem to agree on the issue... it is a sequence black should know - because it is bad to play this if black has nothing along the side to restrict whites extension. But an one-sided sequence shouldn't be called joseki but ???.

tapir: I'm EGF 2k but I don't know the seventh and the eighth here. So I doubt every DDK should know those joseki, at least I say he/she need not to :) (In the 7th W8 is played at B9 most of the time, afaik.) + I doubt anyone should now the 4th one before he knows the reason for B5 at exactly this point. Do u know HermanHiddema/JosekiLearningOrder? He tries to do sth. similar like this page. Welcome to SL, btw.

unkx80: The eighth is joseki, as far as I know.

Tapir: Yeah, I believe. But you can go a long way in SDK ranks without knowing it :P Regarding the 5th, I've recently seen a tsumego (follow up after white 3-3 invasion - do we have it here?) in which B5 is right in place - ok this may not be the only reason. But we all - including our local 2 dan were a bit surprised to learn about that.

[Diagram]

The problem I referred to


Andy: The twelfth one doesn't look good for black for similar reasons to why the third one doesn't look good for black. Twelfth is better for white than eleventh so they can't both be joseki.

maruseru: I agree that the third one is not joseki, but if the eighth one is, that means that the exchange of 3 for 4 in the eighth one, preventing the 3-3 invasion, makes it joseki. Maybe then this is a useful exercise when considering shapes that aren't joseki (i.e., that are not considered locally equal): Which further moves would be necessary to make it considered locally equal? Once you've found those: Could you reverse the order of moves to get that joseki shape?

[1]anon: The third one may not be "joseki" according to our Western definition, but at least its a common sequence that we should probably be familiar with and know when to play it.

The sequence was played by Furuya Yutaka 7d and Akiyama Jiro 8d in [ext] game 13 of the 1st round of the 57th NHK broadcasted on 28th June 2009

And according to the book, All About Joseki, by Mingjiu Jiang 7d and Guo Juan 5d, on page 72 its referred to as joseki.

And its listed in the [ext] Joseki midlet application provided by gofans ([ext] incorrectly referred to as a Life and Death program)

maruseru: The Furuya-Akiyama game you link to does not have this sequence. There is something similar-looking in the lower right corner, but Black only gets to make a two-space extension from his two stones, so White wants to overconcentrate Black.


This is a copy of the living page "Joseki Every DDK Should Know" at Sensei's Library.
(OC) 2009 the Authors, published under the OpenContent License V1.0.
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