the easiest way with a 100% no fail rate is to use the master ball
but if you do use it on him, good luck catching mewtwo. another easyish way is to save just before the fight and bring alot of ultra balls, get him low hp and start throwing, if you run out, restart your game.
Well you can Easily get moltres zapdos and articuno
to catch articuno easily you can weaken it and use a better version of pokeball like greatball,ultraball you buy them from the Pokemon market or find it master ball catches it no matter what but you can not buy that you can only find one or a go to saffron city and go to silph.co and save the old man on floor 11
The third gym leader is Lt. Surge, an electric Pokemon trainer. In the yellow version his only Pokemon is Raichu. Raichu can be easily defeated by a ground type Pokemon. Conveniently, Diglett's Cave is located right next to the town. In here you can find wild Diglett's and maybe wild Dugtrio's, the evolved form of Diglett. These Pokemon can easily defeat Lt. Surge with the Dig attack.
try to catch a suckish one...
in which version ? In emerald you can find it easily at Mt Pyre
ummm...you dont
Just give the Pokemon you want to evolve the Exp. Share or trade a Pokemon with a friend.. It will gain more XP in battles.
throw the master ball
Pokemon indigo is a fake ROM version of Pokemon and can be downloaded if searched for on Google. It is not answer's dot com's policy to supply info, but is easily found.
The odds of running into a shiny Pokemon in Sapphire are 1 to 8192, there is no discovered way to catch a shiny Pokemon more easily... however if you trade Pokemon with a foreign Pokemon version i.e. American and Japanese, and then make an egg with that Pokemon, the chances of getting a shiny egg quadruple to 1 in 2048.
All bug type , if you have Pansear or Tepig you can use either one of them and get through the entire gym easily
Articuno has a weakness to Fire-type attacks (It is part Ice-type) and can easily be wiped out from Charizard's Flamethrower. I would not recommend fighting Charizard with Articuno.