Alias · Guard
Figure-four half guard
Also known as Lockdown — the canonical term used on this site.
Training background: descriptive
Descriptive — figure-four leg geometry of the lockdown
Figure-four half guard is the descriptive name for the lockdown — flagging the figure-four leg geometry that distinguishes the lockdown from other half-guard variants.
Etymology. “Figure-four” specifies the leg-geometry (the locked leg-cross pattern); “half guard” attaches the position-family. The compound predominates in coaching vocabulary that emphasises the structural shape.
Mechanics. The figure-four leg loop closes around the opponent’s trapped leg — the locked geometry produces a structural immobilisation that the standard half-guard’s open-leg configuration cannot match.
Cross-reference. “Lockdown half guard” and “10th Planet half guard” are alternate names. Full mechanical coverage on Lockdown.