EVENT
BOARDSIZE 19
SETUP W C14 H17 O17 
SETUP B D16 F16 Q16 Q14 R10 
COM
Problem 38. Black to play.  

Here is a position that often occurs in handicap games. Where
should  Black invade ? 
ENDCOM
B 1 L16
USER
CORRECT ANSWER
ENDUSER
COM
Correct Answer.

The high invasion of Black 1 is correct.
<=
ENDCOM
  VAR
  B 1 L17
  COM
  Dangerous.

  Invading deeply at 1 is also possible, but this could be risky
  because White would have many chances to seize the initiative.
  <=
  ENDCOM
  ENDVAR