(No. 130: Oct. 19, 1998)
Elementary level: Answer
Black 1 is the vital point. If White 2, Black wins with 3.
Elementary level: Variation
If White 2, Black 3 captures the White stones in a Snapback.
Elementary level: Wrong Answer
Black 1 is wrong. White takes the vital point 2.
After Black 3, the next diagram.
Elementary level: Wrong Answer (Continued)
White retakes at 4 and gets a Ko.
Intermediate level: Answer
Black 1 is the vital point to take advantage of White's
shortage of liberties. There is no way that White can live.
Intermediate level: Wrong Answer
Black 1 allows White to play at the vital point 2 and live.
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