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BeginnerExercise10

 

Beginner Exercise 10 Solution
   

Solution by lavalyn 17k:

[Diagram]
Diag.: Tsuke tesuji

This is a fairly common first move in these semeais - it doesn't take up internal liberties and it prevents black from moving at the marked point before defending that stone - 1 turn. Thus white wins the semeai by one turn.

Complete diagram:


[Diagram]
Diag.: White wins the race


lavalyn has posted the correct solution. --unkx80

unkx80 adding failure diagrams.

[Diagram]
Diag.: Failure 1

White 1 here loses the capturing race. Note that black 2 is the only correct play.


[Diagram]
Diag.: Failure 2

This fails as well.


[Diagram]
Diag.: Failure 3

White 1 and 3 appears to create a seki, but this is not a seki. Because the group of stones containing white 3 is dead, so all the white stones are dead.

In fact, black 2 can even tenuki. The reason behind this is left as an exercise for the reader.





This is a copy of the living page "Beginner Exercise 10 Solution" at Sensei's Library.
(C) the Authors, published under the OpenContent License V1.0.