Break down a low block. Probe and recirculate to shift a compact defence to one side, then switch quickly to the free man on the far side to penetrate and finish before they recover.
The attackers work the ball in front of a deep, compact two-defender block. Probe one side to draw the block across, recirculate to commit it, then switch the play quickly to the free man on the far side to penetrate and finish. Emphasise patience to move them and speed of the switch to punish the gap. Vary the side and rotate the block.
Against a low block there is no space, by definition. A team that has chosen to defend deep and narrow has removed the space in front of its goal on purpose, so an attacking side is not looking for a gap that already exists. It is manufacturing one, and manufacturing takes time, which is why hurrying is the most common and most self-defeating error in this situation.
The mechanism is that the ball moves the block. A defence sliding to one side is compact where the ball is and thinner on the far side, and each recirculation shifts it again. Nothing else available to an attacking team moves eight organised defenders. Individual brilliance occasionally beats a low block; moving the ball reliably does.
Which means probing on one side is not wasted possession even when it goes nowhere. It is the setup. Players find this hard to believe because the passes look unproductive, and it is worth telling them explicitly that the fifteen passes are what makes the sixteenth possible.
The switch has to be quick when it comes, and recognising the moment is the actual skill. The trigger is the far-side defender pinching in. Once he has, the ball has to travel faster than he can recover, which usually means one long pass rather than three short ones.
Name the risk plainly. Committing bodies forward against a team that has ten behind the ball is exactly the shape they want, because low blocks are usually paired with counter-attacks. Somebody stays home, and that decision is made before the attack starts, not during it.
Save it to your private drills, then change the animation, adjust positions, swap equipment, or drop it into a session block. Or start from a blank pitch and build your own.