After completing your mission at Silph Co. and getting all the other 7 gym badges, return to Viridian City and enter the gym. This gym has a maze with items and arrow tiles that make you spin. You’ll battle a few trainers as you navigate the maze. Once you solve the maze, you’ll take on Giovanni once more. Giovanni uses Ground type Pokémon. Dugtrio has great Speed and will use Dig to avoid attacks the first turn then strike the next turn. Nidoqueen will use Body Slam to paralyze targets while Nidoking will use Thrash to repeat for 2-3 turns then become confused. Rhydon knows Horn Drill and Fissure, both of each move that takes an opponent down in one hit but doesn’t work if a target is faster. After winning, you’ll receive the Earth Badge and a TM27 (Fissure). Fissure is a Ground type move that takes an opponent down in one hit but won’t work against faster targets. ... https://www.youtube.com/watch?v=jzfFdYz6u9o

On Friday, Sabrina will be at the harbor in Olivine City next to the S.S. Aqua. Talk to her and she will give you her phone number on the PokéGear. Call her on a Sunday afternoon and she will be at the Fighting Dojo in Saffron City. Alakazam will use Gravity to make moves more accurate for 5 turns and Focus Blast for a 10% chance of lowering the target’s Special Defense stat. Espeon will use Calm Mind to raise its special stats and Baton Pass to switch out while the stat changes remain in effect. Mr. Mime will use Reflect to reduce damage from physical attacks for 5 turns and Thunder for a 30% chance of paralyzing the target. Jynx will use Blizzard for a 10% chance of freezing the target and Perish Song to make all combatants on the field faint in 3 turns. Wobbuffet has high HP and can be pretty hard to take out since it knows both Counter and Mirror Coat. Gallade will use Psycho Cut, Night Slash, and Stone Edge to more easily land a critical hit. A move like Shadow Claw works best for this battle. ... https://www.youtube.com/watch?v=YWIpSJyVZ8U