Instructions
Catch a Pikachu and Raichu of opposite genders, then obtain a Light Ball by trading with another player or checking the items of a captured Pikachu and removing it. Give the Light Ball to the male Raichu or Pikachu by opening the "Items" tab and selecting "Hold."
Travel to the Breeding Center on Route 110. Leave the two breeding Pokemon there and walk around for a while, then return to retrieve the egg from the "Old Man." Walk 2,560 steps to hatch the egg into a Pichu.
Raise the Pichu's happiness level until it evolves into Pikachu. Open the main menu and choose "Pokemon," then select the new Pikachu and examine its "Abilities" to ensure that Volt Tackle is present.