They took up positions near the other two, forming an effective blockade of the colony on the surface below.

The knights cannot set up an effective blockade against four connected pawns, so the position generally results in a draw.

These shields are your first and last line of defense, your most effective blockade against thinking machines.

Britain's larger fleet was able to establish an effective blockade for most of the war that restricted the Central Powers' access to many crucial resources.

The base successfully applied an effective naval blockade of illegal arm smuggling in the Province.

An increasingly effective naval blockade further damaged the Southern war economy.

His servants and equipment formed an effective blockade of the dock.

The only effective blockade against the perennial, alien sound invasion is to create a hum of one's own.

More important, Britain imposed an effective blockade of American ports and captured many merchant ships.

The continuous wedge of valuables made an effective blockade.