(No. 194: Jan. 10, 2000)
Elementary level: Answer 1
Black 1 is the vital point to win the capturing race.
Elementary level: Answer 2
Black 1 is also correct. If White 2,
Black 3 is the vital point to win the race.
Elementary level: Wrong Answer 1
Black 1 is wrong. After White 2,
Black cannot win the race.
Elementary level: Wrong Answer 2
Black 1 allows White to get a Ko with 2 to 6.
Intermediate level: Answer
Black 1 is crucial to get a Seki with the moves to 7.
Intermediate level: Wrong Answer
Black 1 is wrong. White plays 2 to 14.
After Black 15, to the next diagram.
Intermediate level: Wrong Answer (Continued)
White wins the capturing race with 16 to 18.