EVENT
BOARDSIZE 19
SETUP W C16 D13 H16 J15 K14 L14 N13 N14 M13 P16 C5 
SETUP B C18 E17 F16 M14 M15 L15 K15 N15 M16 K17 N17 R16 Q4 
COM
Problem 85. Black to play.  

How should Black play in this position ? 
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B 1 J14
USER
CORRECT ANSWER
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COM
Correct Answer.

Black should cut at 1.
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W 2 H14
COM
White ataris with 2 to rescue her stones at the top.
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B 3 J13
W 4 L13
COM
After White connects with 4, ...
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B 5 E13
COM
... Black leans on the left-side stones by attaching with 5.
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W 6 H13
COM
White must push out with 6, ...
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  VAR
  W 6 D12
  MARK \t@E13
  COM
  If White defends against the attachment of the marked stone by
  extending to 6, ...
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  B 7 D14
  COM
  ... Black will exchange 7 ...
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  W 8 C14
  COM
  ... for 8, ...
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  B 9 H13
  W 10 G14
  B 11 G13
  W 12 F14
  B 13 E14
  W 14 F13
  B 15 F12
  W 16 E12
  B 17 F15
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  ... then trap the white stones at the top with the sequence to
  17.
  <=
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  ENDVAR
B 7 D12
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... and Black takes the initiative on the left with 7 ...
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W 8 C12
B 9 C11
COM
... and 9.
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W 10 C13
B 11 D11
W 12 E15
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White expands her eye space with 12 ...
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B 13 F15
W 14 E14
COM
... and 14, ...
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B 15 F14
W 16 J12
COM
... then secures the center with 16. See Problem 129 for Black's
continuation.
<=
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