Lines of Action, commonly referred to as LOA, is a modern abstract game by Claude Soucie. It was published in Sid Sackson's book, A Gamut of Games in 1969, but did not gain popularity until the 1990's. Perhaps interest picked up after it received a prestigious Spiel des Jahres Recommendation in 1988. Several online game sites feature LOA due to its popularity. The best thing about Lines of Action is that you probably already own a copy. All you need is a Checkers (Draughts) set and you are ready to go.
Lines of Action is both a capture and a connection game. Your goal is to connect all your pieces from opposite sides of the board together. A piece moves as many spaces as there are pieces in a line. A piece may move orthogonally or diagonally, and if there is an opponent's piece in a space you are allowed to move into, then that piece is captured. You may jump over your own pieces but not the opponent's pieces.
When you first play, you will be tempted to capture pieces, thinking like a Chess player. However, when you reduce your opponent's pieces, she has fewer pieces to maneuver, making it easier to connect her pieces. Capture only to cut and divide your opponent while at the same time joining your pieces.
The LOA world championship will be held at the Mind Sports Olympiad, an abstract strategy games tournament. It will take place on August 22, 2011 at the University of London Union. Meanwhile, you can practice with the 2003 Computer Olympiad gold medal winner, MIA. MIA is a LOA AI programmed by Mark Winands.