[2Cool4Mewtwo]

Originally Posted by Landorus

You go through each route and do a set amount of encounters (that you can pick yourself) on any game until you find a Shiny.

I'm doing mine in White. I started on Route 1, did 150 encounters. Went to Route 2, did 150 encounters. Went the Dreamyard and did some. So on and so forth.

ooooohhh.... I get it now :D

I'm going to do this in my HeartGold version with 250 encounters per route down from Route 48 to Route 1. never found shinies from trying to do it from random encounter... (all of them were from dumb luck, when I never thought about it)