(No. 192: Dec. 27, 1999)
Black 1 is the vital point. If White 2,
Black plays 3 to win the capturing race.

Elementary level: Wrong Answer
Black 1 lets White get a Ko with 2.

The order of Black's moves 1 and 3 is crucial.
White dies.

Intermediate level: Wrong Answer 1
Black 1 allows White to live with 2 to 6.

Intermediate level: Wrong Answer 2
Black 1 to 3 also lets White live with 2 to 8.

Intermediate level: Wrong Answer 3
Black 1 first allows White to get a Ko with 2 and 4.
