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(No. 114: June 29, 1998)




Elementary level: Answer

The combinafion of Black's moves 1 and 3 is crucial.
After Black 5 White loses the race and dies.





Elementary level: Wrong Answer

Black 1 fails to win the race.






Intermediate level: Answer

Black 1 is the vital point of this shape.
If White 2, Black gets a Seki and lives with 3 to 13.
Black 1 may be a little difficult to discover.
It is a move that a pro-player once overlooked.



5 : connects under 1




Intermediate level: Variation

If White 2, Black lives with 3 and 5.





Intermediate level: Wrong Answer 1

Black 1 allows White to play at the vital point 2 and
fails to live. After Black 3, White kills Black with 4
to 10. If Black 5 at 8, White plays at 5 and Black is dead.





Intermediate level: Wrong Answer 2

If Black 3, White kills Black with 4 to 12.



6 : throws in under 2
7 : takes at 2
9 : connects under 2




Intermediate level: Wrong Answer 3

After Black 1 and White 2, Black's best choice is to
get a Ko with 3 to 9. Black cannot live unconditionally.
(This becomes the same shape as Problem 51 Elementary Level.)






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