EVENT
BOARDSIZE 19
SETUP W D18 F17 H16 K16 N17 N15 P15 R17 
SETUP B C17 D16 D14 C10 P17 Q17 R16 Q14 Q12 
MARK 1@Q17
COM
Problem 102. White to play.  

You must also be prepared for Black's move at 1. How should White
respond ? 
ENDCOM
W 1 S16
USER
CORRECT ANSWER
ENDUSER
COM
Correct Answer.

The hane of White 1 is the correct move.
ENDCOM
B 2 R15
COM
If Black 2, ...
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  VAR
  B 2 R18
  COM
  Variation.

  If Black takes the corner with 2, ...
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  W 3 R15
  COM
  ... White ataris with 3 and ...
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  B 4 S17
  W 5 Q15
  COM
  ... connects with 5. Black gets the corner, but White has invaded
  the right side.
  <=
  ENDCOM
  ENDVAR
W 3 R18
COM
... White lives in the corner by extending to 3.
<=
ENDCOM