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BOARDSIZE 19
SETUP W F17 G16 G15 F15 C6 E6 B4 Q4 R10 Q16 Q14 
SETUP B D16 E16 E17 F16 D14 D9 D4 C3 F3 O17 L16 
MARK \t@R10
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Problem 71. Black to play.  

White has just played a big point on the right side with the
marked stone. Where should Black attack ? 

[You will find a supplement to this Problem Diagram as "Problem 141"]
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B 1 D7
USER
CORRECT ANSWER
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Correct Answer.

Black should destroy the shape of White's stones by peeping with
1, ...
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W 2 D6
B 3 C7
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... then blocking with 3. Besides making the white stones heavy,
Black has reinforced his position on the left. If White again
plays elsewhere ...
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W 4 O3
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Suppose that White reinforces her position in the lower right
with 4.
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B 5 B6
W 6 B5
B 7 B7
MARK 5@B6
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Black will hane and connect with 5 and 7.
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W 8 B3
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If White crawls to 8, ...
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B 9 J3
MARK A@C5
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... Black will strengthen his position by extending to 9 and
wait for a chance to cut at A.
<=
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