EVENT
BOARDSIZE 19
SETUP W D17 C15 Q3 R5 
SETUP B J17 Q16 O17 E3 C4 
COM
Problem 84. White to play.  

Black has extended to 1. Where should White play so as to maintain
the balance of territories ? 
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W 1 R11
USER
CORRECT ANSWER
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COM
Correct Answer.

It is imperative that White extends along the right side with
1.
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  VAR
  W 1 C9
  COM
  Failure.

  If White extends to 1, ...
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  B 2 R10
  COM
  ... Black will make a double-wing formation from his corner enclosure
  in the upper right with 2. This in considered to be advantageous
  for Black.
  <=
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  ENDVAR
B 2 L3
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The remaining big points at 2 ...
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W 3 C9
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... and 3 will now be shared by Black and White.
<=
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