Guard Break

The Guard Break, also known as the Surprise Blow (Hard Attack in Japan), is a type of attack exclusive to the Street Fighter EX series.

Description
Executed by pressing two punch and kick buttons of the same level (i.e. light punch and light kick), the user executes a guard-crushing attack that costs one level of a filled Super Combo Gauge, and can launch airborne foes.

Each Guard Break attack is considered a unique move, and is listed as such in the command lists.

In Street Fighter EX 3, the Guard Break is replaced with the Surprise Blow, where it functions similarly, only it no longer has a meter cost, and can be blocked high.