Getting ready #2

onadare_2-copyThis part two of the Onadare study that was started in the previous post. This time I’ll summarize the variatons for B, the “large avalanche turn outward”. Again we’ll start with the basic joseki sequence.

Basic sequence after B

Basic sequence after B

From here on out we have a whole lot of different variatons, I didn’t make the commentaries on them too detailed as you can figure out the value of the outcame for yourself.

basic continuation

basic continuation

The most common sequence after the the previous one. Black sacrifices 3 stones in order to gain outside-influence. A rather traditional way of playing it. Some might not be satisfied with giving up the corner, so there are some varitions.

taking the corner

taking the corner

Another joseki sequence. This time, black is getting the corner while white gets outside influence. From here, there are two possible joseki-sequences.

taking the corner (continuation)

taking the corner (continuation)

Very old-fashioned (popular during 1950 when the Joseki had just been invented). Black has to spend two more moves to kill the corner which seems kind of awkward. This is considered too much nowadays.

So a new approach was developed: “A”, the aim was to kill the corner in one single step.

taking the corner (modern approach)

taking the corner (modern approach)

This is the continuation to the newly developed joseki. White 4 was introduced as a countermeasure. It doesn’t stop Black from getting the corner, but he will be forced to add additional stones to his territory to kill the three white stones.

If Black plays 19 at A, White can create a Ko which would become rather troublesome. 21 is a necessary move, if it’s omitted, Black dies.

overprotective?

overprotective?

If White plays 1, Black will capture the corner.  Again there are some variations.

initating a fight

initating a fight

Like this Black gets a big corner, but the center groups are still unsettled. It will be troublesome for both players. There is however another possible continuation.

complicated

complicated

This one is also considered joseki, but White’s shape kind of creeps me out, so I probably wouldn’t play it, it just seems black can get away too easily.

So that was it for “B”, next time I’ll summarize C (the most common response).