Critical hit: Difference between revisions

{{m|Focus Energy}} and {{DL|Battle item|Dire Hit}} were intended to increase the critical hit rate, but a mistake causes them to divide the critical hit rate by 4, giving a formula of <code>BaseSpeed / 2048</code>{{tt|*|The first left shift is changed to a right shift, giving (BaseSpeed ≫ 1 ≫ 1 ≫ 1) / 256}}. If a Pokémon is both under the effect of Focus Energy/Dire Hit and using a move with a high critical hit rate, the effects will stack (<code>BaseSpeed / 256</code>{{tt|*|BaseSpeed ≫ 1 ≫ 1 ≪ 2) / 256}}).

As with move accuracy, if the probability of landing a critical hit would be 100%, it instead becomes 255/256 or about 99.6%.

In {{g|Stadium}}, critical hit probabilities are determined with a different formula, <code>(BaseSpeed + 76) / 1024</code>{{tt|*|(Base Speed + 76 ≫ 2 ≪ 1 ≫ 1) / 256}}; compared to the handheld games, this causes Pokémon with a base speed of lower than 76 to land critical hits more often and Pokémon with a base speed of higher than 76 to land critical hits less often. As in the handheld games, moves with a high critical-hit ratio are eight times more likely to land a critical hit, giving a formula of <code>(BaseSpeed + 76) / 128</code>{{tt|*|(Base Speed + 76 ≫ 2 ≪ 1 ≪ 2) / 256}}. The effect of Focus Energy now correctly increases the critical hit rate, by changing the formula to <code>(BaseSpeed + 236) / 512</code>{{tt|*|(Base Speed + 76 ≫ 2 ≪ 2 + 160 ≫ 1) / 256}}; this stacks with the use of a high critical hit rate move(<code>(BaseSpeed + 236) / 64</code>{{tt|*|(Base Speed + 76 ≫ 2 ≪ 2 + 160 ≪ 2) / 256}}). Notably, combining both effects in Stadium will always maximize the critical hit probability at 255/256, and thus near guarantee a critical hit regardless of the move's user.