After getting all 8 gym badges, go west from Viridian City to Route 22 to encounter your rival once again. For the 7th battle, he adds Rhyhorn to his team. Alakazam has a nasty attack called Psychic that can sometimes lower the Special Defense stat of the target. After the battle, continue west to the Pokémon League. ... https://www.youtube.com/watch?v=dWjEBox42TI

From the guard room, go up and avoid the Blade Traps. Turn right through an invisible wall and defeat bats in a dark room to reveal some Rupees. Go through another invisible wall and Bomb the top wall by Wizzrobes. In a room with a Patra, go left through an invisible wall and defeat the Wizzrobes so you can push a block to reveal a stairway. Passage A holds the Silver Arrow. Go north through a one-way invisible wall and you’ll see some Red Bubbles. Go up and push a block out of the way then go left. Go down one room then Bomb the lower wall. Defeat a Patra for some Rupees and go back to the guard room. Go left from the guard room and defeat a blue Landmola for some Bombs. Cross rooms with Like Likes, Vires, black bats, a red Landmola, and some Red Bubbles. When you reach the Red Bubbles, Bomb the right wall and push a block out of the way to go one room up. Go past some Blade Traps and go one room right. Bomb the lower wall and defeat the bats for a Compass. Go back up a room and Bomb the top wall. Unlock one door and cross the waters to go up a room to a hint room. Go left through an invisible wall and avoid the Like Likes. Go left once then up the next to battle a Patra. Go left through an invisible wall and defeat a blue Landmola. Push a block to reveal Passage B and get the Red Ring. Go back through the invisible wall and push a block to go through Passage C. You’ll end up on the other side of the block walls and Bomb the right wall. Defeat one more Patra and the door will open. Turn right and you’ll battle Ganon. When you’re close to the fireballs, swing the sword and it will hit Ganon. When Ganon turns red, finish him with a Silver Arrow and grab the Triforce. In the final room, you’ll rescue Zelda, and you have completed the game. ... https://www.youtube.com/watch?v=I_6CfNlewE8

At the start, you’ll see Paratroopas coming. Go down the pipe and you’ll collect coins underground. Return to the surface and cross a bridge with 3 anti-mushrooms coming. After the next pipe, you’ll see 2 Hammer Bros throwing a bunch of hammers by sets of garbage blocks. Bounce off the spring and you’ll reveal a vine by hitting one block to go to the sky for coins. If you take it on the surface, you’ll see anti-mushrooms and Koopas with 4 ? Blocks. Hit a block containing multiple coins and you’ll see Koopas on the big stairway before reaching the flagpole. ... https://www.youtube.com/watch?v=teSp8ZIH7ZA

In Viridian City, there is a place called the Trainer House. The basement of the area is where you can battle trainers, and one of them would be Cal. Meganium will use Leech Seed to slowly drain the HP of the target after every turn, Toxic to badly poison the target, and Protect to avoid damage. Typhlosion will use Eruption to deal massive damage that will weaken if its HP is lower. Feraligatr will use Dragon Dance to raise its Attack and Speed stats along with Waterfall for a 20% chance of making the target flinch. After winning, you’ll receive 1 BP. Each trainer you battle in the basement of the Trainer House can be battled once per day. ... https://www.youtube.com/watch?v=vGmzruveX5w