Legendary Birds
This is just random, but most people think that the legendary bird Pokemon (Moltres, Articuno etc) can be caught only by a master ball. But I caught Moltres after two goes with an ultra ball. Moltres was asleep and had just less than a quarter of it's health left. So give it a go with an ultra ball
Also someone told me that if you hold down UP and B while catching a Pokemon, theres a much better chance you'll catch it. I haven't tried it yet but they said it definitely works. So try that too
And finally my Pokemon Red game is completely ruined because of a MissingNo cheat. So I would advise you to not give them a go. OK yeh thats about it :D
If you need more help, we've got more Pokemon Blue cheats and also check out all of the answers for this game
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