Things You'll Need
Instructions
Walk into any large field of grass in the game, and use a repel. This keeps you from experiencing random Pokemon encounters.
Activate your pokeradar. You will see certain patches of grass move. Walk to one of the moving patches of grass to start a battle with a Pokemon.
Defeat or catch the Pokemon in battle by using the attacks of your own Pokemon. After winning the battle, you will see several more patches of grass move. Approach a patch of grass to get into another battle with the same type of Pokemon.
Continue battling and defeating Pokemon 40 times, to achieve a chain of 40. Your chances of encountering a Shiny Pokemon are now only 1 in 200.