Accompanying materials of The Art of 9x9 Go:
MONTEO BEAT 4 DAN KKK1024 (R1997)
W+T, komi 7.
A common response to is to extend from . The matter is the length of the extension in response to the approach distance. If you are approached closely, you should extend closely. If you are approached far away, you can extend far away. So, White answered with , which looks more balance than a.
White played not well in this game and would give you no good lessons. He made the game so complex that Black was defeated by time: Black spent more than maximum available 3 min of his. Playing 9x9 go at GoQuest, you have to be not only smart, but also quick.