Questions tagged [joseki-deviation]

Deviating from joseki means playing an unusual move that is not part of a joseki. Typically, it is a mistake, though actually refuting it can be very difficult. It could also be part of a rare joseki that is not well known because it is only applicable on special boards.

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1 answer
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Having started a small avalanche, what does one do with an undefended cutting stone?

Having just looked at the small avalanche (nadare / konadare) in 38 Basic Joseki I tried it out as White in a 2-stone game against GNU Go and was surprised that it left out the move at a, immediately ...
PJTraill's user avatar
  • 1,358
2 votes
1 answer
346 views

Overplay in orthodox fuseki - Leela AI fails miserably?

I'm not sure how much go is discussed on StackExchange, but currently I prefer trying it here than an actual go forum. This question concerns two topics: Recently the free go AI Leela has been ...
Adomas Baliuka's user avatar
5 votes
2 answers
355 views

Trick Joseki? Shoulder hit after keima to 3-4-stone

In a game I played, the following "Joseki" occurred: I played the low keima against the 3-4-point, and Black responded with a shoulder hit. This move is not in the book by Takao Shinji. In the game ...
Sir Cornflakes's user avatar
1 vote
4 answers
410 views

Why is this NOT joseki?

Why is white 4 in this diagram not joseki? How can it be punished by black and how bad is it compared to standard joseki play? $$ ---------- $$ ..........| $$ ..........| $$ ..3.2.....| $$ ...4..1...|...
Sir Cornflakes's user avatar
1 vote
2 answers
158 views

4-4 high approach joseki question

I have a question about 4-4 high approach joseki. Everything is clear until move 4. I don't know how to respond if black plays C15 instead of the expected C17 (stone number 5). It leads to the ...
Tomas's user avatar
  • 651
6 votes
4 answers
458 views

Magic Sword: Peaceful Variation or is Punishment Possible?

In a game earlier today I encountered a deviation from the Magic Sword pattern that I haven't been able to find anywhere. Instead of cutting, White seemed to offer a peaceful trade of influence for ...
Gregor Thomas's user avatar
11 votes
4 answers
1k views

Corner variation which is not in Josekipedia

$$Bcm1 $$ ------------------- $$ . . . . . . . . . | $$ . . . . . . . . . | $$ . . . . a 0 4 8 . | $$ . . . . . 1 5 6 . | $$ . . . . . . 9 7 . | $$ . . . . . . 2 . . | $$ . . . . . . . . . | $$ . . . ....
Xavier Combelle's user avatar
9 votes
1 answer
1k views

Deviation of 3-3 invasion - how to live/kill?

I know the following is joseki for an approach of the 4-4 stone followed by a 3/3 invasion... $$cm1 A normal 3/3 invasion joseki (incomplete) $$ +---------------------------------------+ $$ | . . . . ...
Frank's user avatar
  • 522
6 votes
3 answers
484 views

Komoku-Oogeima joseki order variation

In a game my opponent deviated from the joseki line I was familiar with. $$W Actual game $$ ------------ $$ -........... $$ -.94........ $$ -.5128O..... $$ -..X36...0,. $$ -...7....... $$ -..............
mafu's user avatar
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