Understanding and applying the Tsuke Nobi Joseki
As much as I have received counsel to not bother with josekis at this early a level, I have continued to study them (becuase it's fun) and the one I am focused on these days is the tsuke nobi. I've been opting for high(er) handicap games in order to test my understanding.
In my second game of the day, White played the joseki out perfectly up to move number 7. With the right tactical skill, an invasion around the vicinity of Q14 to R13 is still possible but, in this particular handicap position, it would serve to strengthen Black's position in the lower right. The corner will live easily. A tenuki is generally the next move after B-R10.
Instead, White opted to push and hane with P16 and Q15 (moves which Yoshio Ishida calls "reckless"). Black Q14 and Q18 ensure the defensibility of the corner and certainty of White dying if the corner is sought and if the vital points are understood. After Black Q18, White must protect with N17 as it becomes a weak point.
White opted instead to play R14, allowing Black to make the cutting move.
As the game progressed, the O17 group died, Black lived in the corner and got outside influence after containing White.
It might have been possible for Black to better contain White to the side but I was trying to keep it simple for myself. If anyone has some ideas, I'd really like to hear them.
My understanding of this joseki is based on Ishida's writings from 1977. There's always the possibility that the Koreans may have discovered new countermeasures in their own jeong-seok (정석). Among the current crop of English Go bloggers, Mr. Ooijer would likely be the most knowledgable of Korean improvements to joseki. It would be interesting to see if something new exists.