Capturing Race Exercise 11 / Solution


Qi: White wins the race.

ChrisSchack: Doesn't status imply either player might move first, and part of the question is if either side needs a move? Looks to be unsettled, whoever plays first wins.

White first  

Dieter: That's right. If White goes first, it becomes a fight between two "blind" groups. White has one liberty more - an outside liberty in fact - making him the favourite and capture Black.

Black first  

If Black goes first, he decides the liberty race in his favour.

"Hidden liberty"  

Bill: It is worth pointing out that a is a liberty for Black, in the sense that if White had a stone there she could escape or capture.

Dieter: Right. Which goes to show that liberties is a "case-sensitive" concept. Can we rephrase the above as "... escape AND kill" ?

Bill: Rephrased. :-)

Capturing Race Exercise 11 / Solution last edited by Unkx80 on May 18, 2008 - 10:57
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