How Croquet Is Played
Rules for nine-wicket or "backyard" croquet:
A full-size croquet court is a rectangle 100 feet long and 50 feet wide. Short grass provides the best playing surface. Nine metal wickets and two wooden stakes are arranged in a double-diamond pattern. The object is to advance the balls through the course by hitting them with a mallet, scoring a point for each wicket and stake made in the correct order and direction. The winner is the first side to score the 14 wicket points and 2 stake points for each of its balls. Players earn bonus shots by "scoring" a wicket or stake or by hitting another ball (a "roquet"). For the Annapolis Cup, there are 10 players on each side, divided into two-person teams.
Source: U.S. Croquet Association