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See your listing of Pokemon. Assess those that you have duplicates of and those you want to evolve. For example, if you've two Pikachus, plus you've got 2 1 CP as well as the other has 11 CP, you'll probably want to keep/develop the one with 2-1 CP and move the one with 11 CP. The one with more Hewlett-Packard and CP will be stronger in the battlefield. Homepage for more information about pokemon world map serebii right now.