On Thu, 2007-03-29 at 11:08 -0700, Jim O'Flaherty, Jr. wrote: > What's a pseudo-liberty? And how can there be more of them than there > are empty intersections (81) on the board?
That's why they are pseudo - they may not be real :-) Actually, a pseduo-liberty is an actual liberty, but it can be counted multiple time. Since an empty point can be surrounded by up to 4 stones, it can get counted 4 times. It's really a way to incrementally update liberties in a fast way - each stone keeps it's own count of liberties and it is summed - but of course it doesn't represent the true number of liberties since a point can get counted 2 or more times. However, if the count goes to zero, the count is correct. - Don _______________________________________________ computer-go mailing list computer-go@computer-go.org http://www.computer-go.org/mailman/listinfo/computer-go/
