What set of 4 types can hit everything at least normal effectively in an Inverse Battle?

Question

This includes Gen 6.

Answer 1

For inverse battles, the 4 moves that provide widest coverage are:

Bug - 7 types super effective, 3 not very effective
- Fire, Fighting, Poison, Flying, Ghost, Steel, Fairy x2
- Psychic, Dark, Grass x0.5

Grass - 7 types super effective, 3 not very effective
- Fire, Grass, Poison, Flying, Bug, Dragon, Steel x2
- Water, Ground, Rock x0.5

Fighting - 6 types super effective, 5 not very effective
- Poison, Flying, Psychic, Bug, Ghost, Fairy x2
- Normal, Ice, Rock, Dark, Steel x0.5

Poison - 5 types super effective, 2 not very effective
- Poison, Ground, Rock, Ghost, Steel x2
- Grass, Fairy x0.5

Worked it out with the Serebii inverse type chart.

Comments

Honourable mention to Normal with 3 Se and 0 Nve I suppose.

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You forgot the third Nve on Bug.

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Urgh right it's NVE on Grass; thanks for pointing that out.

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No prob.