EVENT
BOARDSIZE 19
SETUP W F17 J17 L16 O16 O17 
SETUP B D16 D14 J16 P17 Q16 Q14 
MARK 2@J17 1@J16
COM
Problem 48. Black to play.  

White attaches at 2, aiming to make sabaki. How should Black
respond ? 
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B 1 H17
USER
CORRECT ANSWER
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COM
Correct Answer.

Black should block at 1.
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W 2 H16
COM
White then crosscuts with 2, the usual way of making sabaki.
But, ...
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B 3 G16
COM
... Black counters White's plan by playing atari with 3 ...
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W 4 H15
B 5 J18
MARK \t@J16
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... and 5, discarding his marked stone.
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W 6 K17
B 7 G17
MARK A@C17
COM
Black is thick on the left, it will be hard for White to invade
the corner at A.
<=
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