Critical hit: Difference between revisions

Whether a move scores a critical hit is determined by comparing a 1-byte random number (0 to 255) against a 1-byte threshold value (also 0 to 255); if the random number is less than the threshold, the Pokémon scores a critical hit. If the threshold value is ''T'', then this means the probability (''P'') of scoring a critical hit is <code>''P'' = ''T'' / 256</code>. (Note that this means it is impossible for a critical hit to be guaranteed; there will always be a 1/256 chance that a critical hit will not be scored.)

Due to a bug, {{m|Focus Energy}} and {{DL|Battle item|Dire Hit}} lower a Pokémon's chance of scoring a critical hit instead of raising it, dividing ''T'' by 4:

If the move being used has a {{cat|Moves with a high critical-hit ratio|high critical-hit ratio}}, ''T'' is multiplied by 8:

If the move being used has a {{cat|Moves with a high critical-hit ratio|high critical-hit ratio}}, ''T'' is multiplied by 8:

In Generation II, when a move scores a critical hit, all stat stage modifiers, the halved Attack from burn, and the defensive boosts from {{m|Light Screen}} and {{m|Reflect}} are ignored if the target's defending stat stage ({{stat|Defense}} or {{stat|Special Defense}}) is greater than or equal to the attacker's attacking stat stage ({{stat|Attack}} or {{stat|Special Attack}}). From [[Generation III]] onwards, when a move scores a critical hit, the attacker's negative stat stages, the defender's positive stat stages, and the defensive boosts from {{m|Light Screen}} and {{m|Reflect}} are always ignored. However, the halved Attack from burn is no longer ignored.

** Gen VI: a critical hit will ignore the Defense boost. (Damage with a critical hit will have a 3× modifier.)

** Gen III+: a critical hit will ignore the Attack drop. (Damage with a critical hit will have a 4× modifier.)

** Gen VI: a critical hit will ignore the Attack drop. (Damage with a critical hit will have a 3× modifier.)

 

 

Pokémon with the Ability {{a|Merciless}} will always score critical hits on {{status|poisoned}} Pokémon (unless prevented by one of the above effects).

! colspan=2 style="background:#{{status color light}}; {{roundytr|5px}}" | Chance of critical hit

! Gen VI onwards

| style="background:#fff" | 1/3 (33.3%)

An attacking move will start out at stage 0, but there are several ways to increase a move's stage as detailed in the table below. An effect cannot stack with another effect in the same column, including itself.

| {{cat|Moves with a high critical-hit ratio}}<br><small>(Gen II-III: +2 stages)</small>

{{DL|In-battle effect item|Scope Lens}}</ab>

| {{DL|Battle item|Dire Hit}}

| <ab>{{m|Focus Energy}} <small>(Gen II: +1 stage)</small>

Note that it is possible for a Pokémon to acquire the effect of a [[Lansat Berry]] even if it is already holding another item, through the use of {{m|Baton Pass}}, {{m|Pluck}}, {{m|Bug Bite}}, or {{m|Fling}}; or by obtaining another item after consuming the Berry, such as via {{m|Thief}} or {{a|Symbiosis}}.

|es={{tt|Golpe crítico|Ataque crítico in Generation I}}

|ko=급소 ''geupso