GURPS MA: Riposte and All-Out Defense

[Dinadon]

Originally Posted by sclose1970

Is it legal (RAW) to use All-Out Defense (Increased Defense +2) to boost a Riposte attempt?

By boost, I'll assume you mean to take a larger penalty, the answer is no. Riposte counts no modifiers to your parry score, aside from Enhanced Parry, to determine how big a penalty to take.

Those modifiers do, though, make it more likely that you succeed at your penalized defense.