deja wrote:daniel_the_smith wrote:Right, so white makes a ko threat...
But wherever white moves next, black just takes that group, no?
What if white's next move threatens to capture 40 stones? Do you still just take the lower right group?
Here's a more quantitative way to look at it than just "killing is better than ko":
In your solution, the sequence goes bwbWbW, where uppercase letters are moves played elsewhere on the board.
In the correct solution, the sequence goes bwbW (or bW, if White stops thrashing).
In both cases, both players have played the same number of moves as each other. But in your solution, white has gotten to play an extra stone somewhere else on the board for free (two capital W's instead of one).
from either side.