EVENT
BOARDSIZE 19
SETUP W K16 L16 M17 O16 
SETUP B D16 H17 L17 M16 Q16 Q14 
MARK 2@L16 1@L17
COM
Problem 9.Black to play.  

If you didn't like the result in Problem 6, there's an even stronger
way for Black to play. What is Black's strongest replay to White
2 ? 
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B 1 M15
USER
CORRECT ANSWER
ENDUSER
COM
Correct Answer.

Black 1 is a very strong move.
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W 2 N17
COM
If White draws back to 2, ...
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  VAR
  W 2 K17
  COM
  Variation.

  Against White 2 ...
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  B 3 N17
  W 4 L18
  COM
  ... and 4 ...
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  B 5 M18
  MARK 3@N17
  COM
  ... Black plays 3 and 5, taking a big chunk of territory on the
  right. It is going to be very hard for White to make sabaki now.
  <=
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  ENDVAR
B 3 K17
COM
... Black links up to his allies on the left with 3. White's
stones are now separated and Black has a superior position.
<=
ENDCOM