This play is called ‘exchange of thrusts’ and you do it like this. When your opponent delivers a thrust, you quickly advance your front foot off the line and with the other, pass across also off the line, crossing the sword with your arms low and with the tip of your sword raised to the face or chest, as drawn.
Exchanging the thrust is a crucial play to understand in armizare. From a stance with your left foot forward against a thrust from your opponent, slide your front foot off the centreline and beat the thrust with a transition to posta frontale. This leaves you making the cover of the 2nd master of sword in two hands.
Sliding offline to either side will be effective, although each option will have slightly different qualities. If you slide your foot to the left, you widen your stance, putting your body firmly on the centreline of your opponents attack. You will need to have a strong and assertive beat to win the space, but will also have a slightly shorter, and so quicker, line to counter along. If you slide to the right, you move your body out of the way of the attack, and then redefine the centreline as you step through. This is safer and requires less force, but is also very slightly slower in delivering a counter. Fiore tells us that both feet step offline, suggesting that it is the second option that he prefers.
Regardless of which side you step to, catch your opponents blade with the flat of your own. As you lock into posta frontale, give your sword an axial spin, to flick your opponents blade to the side. Keep your hands low and the point up, so as to maintain a cover against your opponent. Step through with your right foot, driving the point into your opponents face, throat or chest, as shown.
Although there are a number of steps involved, in practice this plays out as a single smooth motion. Also bear in mind that although described as a parry and counter, you can transition into this, or any of the 2nd masters scholars, from any situation which finds you crossed at the middle of the blades when in wide play.