EVENT
BOARDSIZE 19
SETUP W E17 D17 C16 B14 O18 O17 R17 Q17 N16 N15 L14 M14 L15 L12 Q2 O3 B4 C6 C9 M11 
SETUP B D14 E16 F17 G16 K15 L16 M17 N17 R16 Q16 P16 O16 K11 N14 N13 Q13 Q10 Q4 R6 C3 D4 F3 
MARK \t@L12
COM
Problem 131. Black to play.  

How should Black attack after White played the marked stone (White
4 in then Correct Answer of Problem 47) ? 
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B 1 M9
USER
CORRECT ANSWER
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COM
Correct Answer.

Black should cap with 1.
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W 2 K16
COM
White will play 2 ...
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B 3 K17
W 4 J16
COM
... and 4 to get some aji at the top, ...
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B 5 J17
W 6 J14
B 7 J15
W 8 K14
B 9 H15
W 10 J12
COM
... then run away with the sequence to 10.
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B 11 J11
COM
Black forcefully drives White to the left side with 11 ...
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W 12 H12
B 13 G10
W 14 F12
B 15 E10
W 16 D12
B 17 C10
COM
... to 17, then, ...
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W 18 C12
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... when White links up to the corner with 18, ...
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B 19 B9
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... the white stones in the lower left suddenly find themselves
in trouble.
<=
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