Yoko Sankaku.

What it is

Side-angle leg triangle compressing carotids via shin and trapped shoulder

What you do

Release the figure-four immediately on the tap or any visible loss of consciousness.

Tap early to head pressure or tunnel vision rather than waiting for pain that may not arrive.

Avoid explosive rolling escapes that load the cervical spine against the locked leg.

Communicate pressure clearly during drilling — the perpendicular angle can hide the squeeze.

Apply pressure gradually so partners can recognize the choke before consciousness fades.

Watch for limp body or rhythmic snoring as signs of an unannounced unconsciousness.