Billo is played on a checker board, but with two different types of piecessquare pieces and circular pieces. The goal is to capture all opposing pieces. To capture a piece simply move into its square with a different piece (a circle on a square or viceversa). When a piece arrives in the last row, it becomes more powerful (it's kinged). This piece is called a "Billo" and regular pieces cannot capture it. Its mode of movement also changes.