EVENT
BOARDSIZE 19
SETUP W D16 D4 K4 
SETUP B Q3 Q9 Q16 
MARK 1@K4
COM
Problem 67. Black to play.  

In this variation of the Chinese opening, White takes the star
point in the middle of the lower side. How should  Black respond
? 
ENDCOM
B 1 K16
USER
CORRECT ANSWER
ENDUSER
COM
Correct Answer.

Black should take the bit point at 1 to map out a large-scale
moyo in the upper right.
<=
ENDCOM
  VAR
  B 1 C10
  COM
  Failure.

  Jumping in between White's two star-point stones on the left
  side is not good.
  ENDCOM
  W 2 O17
  COM
  Black's natural strategy of making a large-scale moyo at the
  top is thwarted by White 2 ...
  ENDCOM
  B 3 Q14
  W 4 K16
  COM
  ... and 4.
  <=
  ENDCOM
  ENDVAR
  VAR
  B 1 F17
  COM
  Failure.

  There are many examples in professional games of Black approaching
  with 1, but when he plays this way, ...
  ENDCOM
  W 2 K16
  COM
  ... White will pincer at 2 and Black can no longer play a moyo
  strategy.
  <=
  ENDCOM
  ENDVAR