EVENT
BOARDSIZE 19
SETUP W D16 D4 K16 O17 
SETUP B Q16 Q14 Q9 Q3 
MARK 1@O17 2@Q14 3@K16
COM
Problem 7. Black to play.  

How should Black play after White extends to 3 ? 
ENDCOM
B 1 K4
USER
CORRECT ANSWER
ENDUSER
COM
Correct Answer.

Black's aim in playing the Chinese opening is both to take territory
and to make a moyo. Therefore, Black extends to 1, mapping out
a moyo in the lower right.
<=
ENDCOM
  VAR
  B 1 C10
  COM
  Too flat.

  Black 1 is contrary to the spirit of  the Chinese opening.
  ENDCOM
  W 2 K4
  COM
  White will extend to 2 and Black's formation on the right side
  is too flat.
  <=
  ENDCOM
  ENDVAR
  VAR
  B 1 F3
  COM
  A little unsatisfactory.

  No one can say that the approach move of Black 1 is bad, but
  ...
  ENDCOM
  W 2 K4
  MARK A@C6 B@D6 C@C3
  COM
  ... White will pincer with 2 and, whether Black plays A, B, or
  C next, he must give up any hope of building a moyo.
  <=
  ENDCOM
  ENDVAR