As a Pokémon expert with extensive knowledge of the various types and their interactions, I can provide you with detailed advice on which types of moves are most effective against a Gengar.

Gengar is a Ghost/Poison type Pokémon. When it comes to battling, the effectiveness of moves is determined by the type chart in the Pokémon universe. To deal super effective damage to a Gengar, you should use moves that are particularly strong against both Ghost and Poison types.

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This will allow you to to deal maximum damage during battle and defeat Gengar quickly and easily. To defeat Gengar in Pokemon Go you must take advantage of its Type Weakness(es). Being a Ghost/Poison Type, Gengar is vulnerable against Dark, Ground, Ghost, Psychic Type Moves.read more >>