Probably because you don't have the national dex yet get it then try again.
instead of evolving it get the evolved form chansey at solocian town
The only Pokemon is Happiny>Chansey.
No
Give them a everstone or press b when they are evolving ;)
well, don't you read the trainer tips? not to be mean or anything. to stop your Pokemon from evolving, press B until it says "Huh? *Pokemon's name* stopped evolving!" and there you go.
No, it will most likely keep evolving and getting more advanced.
The everstone stops evolving all Pokemon that evolve in the first place.
If you stop a Pokemon from evolving, it`ll try to evolve every level after that unless it`s holding an everstone.
First you need to have a Chansey in your party. Chansey has to be the first one in your Pokemon party. Go to Pallet Town and go to the house next door. Not your house, but your rival house. There should be your rival's mother. Then you talk to her. She will say she's about to have tea and she will ask you to join her. then she will say that your Pokemon are dirty. she will ask you which one to groom. choose chansey. then talk to her again. she will explain to you on how your Pokemon should love you. she should say this about your chansey. "It couldn't possibly love you any more then it does now. Your Pokemon is happy beyond words." When she says this about your Chansey, then you know it is ready for chansey to evolve. just make chansey level up. once it levels up and the battle is over, it should show you that chansey to evolving into Blissey. I'm so happy i got it. it took a long time for me to make chansey very happy. just follow these steps and you will get yourself a Blissey. i hope i helped. By: lazyhl94
yes
An Everstone is an item that can be given to a Pokemon. It prevents any Pokemon from evolving.
There is not such game as "Pokemon indigo", but to stop any Pokemon from evolving, you either give it an everstone or just press b a few times.