Hidden Power (move)

Inflicts regular damage. Power and type are determined by the user's IVs.

Power is given by `x * 40 / 63 + 30`. `x` is obtained by arranging bit 1 from the IV for each of Special Defense, Special Attack, Speed, Defense, Attack, and HP in that order. (Bit 1 is 1 if the IV is of the form `4n + 2` or `4n + 3`. `x` is then 64 * Special Defense IV bit 1, plus 32 * Special Attack IV bit 1, etc.)

Power is always between 30 and 70, inclusive. Average power is 49.5.

Type is given by `y * 15 / 63`, where `y` is similar to `x` above, except constructed from bit 0. (Bit 0 is 1 if the IV is odd.) The result is looked up in the following table.

This move thus cannot be normal. Most other types have an equal 1/16 chance to be selected, given random IVs. However, due to the flooring used here, bug, fighting, and grass appear 5/64 of the time, and dark only 1/64 of the time.