Duplicate
go to the guy in viridian city who teaches you how to catch a pokemon. watch and listen. now fly to cinnabar and put the item you wanna duplicate in the 6th slot. swim up and down on the shore by the gym and run from missingo.

Catch a pokemon over lv 100
do the duplication code but forget the 6th slot thingie. just swim up and down, and eventually pokemon over lv 100 will appear.

Infinite $$
find a nugget, and duplicate it. put the nugget in the 6th slot. afterwards, sell all the nuggets except one, which you can use to duplicate again.

Fight a pokemon out of Safari Zone
to fight a pokemon out of Safari Zone, then you go to safari zone, and find the pokemon. now, you let time run out, and talk to the viridian dude. say no and listen. then fly to cinnabar island, and swim up and down the shore.

Cut
to cut down a tree, simply get on the ss anne, and teach it to a grass pokemon, fire, bird, or any other type. and use cut.

Some pokemon can only be evolved by the gamelink cable.
they're machoke, haunter, kadabra, and graveler.


Yoshi code

This code is kind of easy.It might not work so if it doesn't don't get mad.Okay
1.Trade your dratini to the red version and raise it to Dragonair.
2.Use a fire stone(it will say it won't have any affect but it does)
I told you it's kind of easy!

Mew Code

Beat the Elite Four in half an hour. That's the easier way.

Aqua Charizard Code:

Get your Gameshark sorry...
You must have a Gameshark to do this code...
Like I said.Sorry,Really I am......................
Put Charizard on top of your list,then with a Gameshark put thi code in...
017F73D1
013D76D1
(Red and Blue Version Code only.If you use it in yellow,
you wont get all AquaCharizard(s) attacks....

YOUR RIVAL'S SECERT GYM

First you beat the elite four 33 times without going into grass.

Then fly to Digletts cave in Viridian City. Then you go as far as you can

go then use dig with Diglet.You will go straight to your rival's gym

If you loose you will not be the champion of the Pokemon League, if you win you will get

either get a Mew or a Ladyba!!!!

Mewthree Code

Have mewtwo on the top of your list
Type 01E564D1 in your game shark
Then use a rare candy on him.
Change his name to Mewthree

Floating Ash

Put in 010007C1 and Ash will fly. You can surf this way too.

Togepy Code

Togepy Code
Ok before you read this code there's something you should know. This code wont work if you've ever used a Gameshark! Even if it was two games ago it wont work!!!! Ok so don't get mad at me! Because I wont be able to do it either!!!

#1 Have all 150 Pokemon without a game shark/genie!!!
#2 Beat the first 3 of the Elite 4 and save the game. Than turn the gameboy off than on.
#3 Beat Lance and your Rival and sit through the credits. After the credits go to your house.
#4 Your mom should be on the table! Go upstairs and she should be on your bed! There will also be a little Pokemon running around!
#5 She'll tell you to keep it and take good care of it as long as it doesn't come in the house again.
And you have Togepy!

HM6

First put in the code for infinite money 019947D3-019948D3-019949D3.
Now using Gameshark type in 01A47CCF then go to a pokemart. It will be
the first item in the list and will be named nickname? which is HM06 and it'll
cost over A LOT of money. You know how to get infinite cash right? You oughtta know.
Now buy it and go to any 1 or 2 layer-thick wall. Then stand with your side to the wall. Go to item, click on the new item you
got. (nickname?) This'll then put you to the screen that says USE ON
WHICH POKEMON.
Note: Do not use it on a pokemon!

Anyway, click on until you can use item on which pokemon. Then push b
to cancel the screen and get back to the game, then you'll see Ash and
several pokemon in line.. on side of screen.. then push in the
direction of the wall one space or two. Depending on how thick it is.
Then push start, go to view your pokemon and when you return you'll be
over the wall. Hey, you've found the HM06 code!

HM07:
HM07 is a quite difficult code considering you need all 151 Pokemon. First you must have these Pokemon in this order in your party: Bulbasaur, Ivysaur, Venusaur, Charmander, Charmeleon, Charizard. Next in the pokemon storage boxes, have in Box One, Pokemon 007-027, Box Two Pokemon 028-048, Box Three Pokemon, 049-069, Box Four Pokemon 070-090, Box Five Pokemon, 091-111, Box Six Pokemon, 112-132, Box Seven Pokemon, 133-151. So the first Pokemon in Box One should be Squirtle, and the last Pokemon in box Seven should be Mew. Remember to keep them in numerical order or else the code won't work!!
So, after doing this, go out and fish with any rod. A Pokemon should appear called Hifishi. Catch him with your cloned master balls. After catching this mysterious Pokemon you will notice that he has an attack known as Deepdive. Using that while surfing, you can go under water to a under water city! Hey buddy, you've found the HM07 code!

HM8

To get HM08 talk to the guy that gives you the super rod 100 times and he will give you the Ultra Rod. It fishes for TM's and HM's. Eventually you will catch HM08. I. I think HM08 is called Super Strength.

Rainbow Stone

Go to the Uknown Dungen with a Hitmonchan, then use Item Finder 100 times, Go to exactly were Articuno stood and use Item Finder once, You should have sound an item called "Rainbow", Use it on Hitmonchan and he should Turn into Houou!