Life In 19x19

Double ko goes away, so some standard positions change from alive to ko.

jts wrote:Tibetan ko turns lots of standard l&d into ko (bulky eye spaces and so on). Luigi ko hugely changes situation where multiple strings of stones are in Atari, and turns a lot of them into ko. Both very broad, but different.

I must admit reading this thread I have learned a new respect for the Tibetan rule set. I thought it was simply about playing on hoshi points and 17x17 grids, but extended ko fights over the bulky five are pretty cool, now I know why all the traditionalist want to play that way.