The challenge ends when all but one contestant is in position to get fuel.

A legal challenge to the construction companies ended in a ruling that halted development.

Napster's technological and business challenges will not end with the injunction.

The challenge ended with no memory effect observed by the Horizon team.

If they managed to double their $20,000 stake, the challenge ended as a win.

Such a challenge usually ends in death for one man or the other.

The challenge is ending poverty as we know it.

The challenge would end the recent practice of holding the America's Cup races once every three or four years.

"The challenge at this point is no longer ending discrimination," the memorandum said.

The challenge didn't end with the scene by the pool.