Multiplayer Darts

Play darts in a team against your opponent. In this game you will need to play darts with 501 points. The dartboard is divided into 20 areas with scores of 1 to 20, each area is further divided into 4 regions, the larger 2 regions score the same as the score for the area, the outer thin region scores 2 times as the area score, and the inner thin region scores 3 times as the area score. The bullseye (the red dot at the center) scores 50 points, the bull's ring (the green ring around the center) scores 25 points. Before the start of the game one player from each team shall throw a dart towards the bullseye, the team of the player whose dart is closer to the bullseye starts first. In each turn, a player from a team throws three darts, and then a player of another team throws 3 darts, and so on. Each time you throw a dart, the score you get from the dart will be deducted from the initial point of 501, the object of the game is to deduct the points to exactly zero before the other team does. The last dart you throw must hit a double or the bullseye. If your points is reduced to below zero, exactly 1 or to zero but without hitting a double or the bullseye with the last throw, then your team's score will be reset to the score at the beginning of the turn and your turn is forfeited and your opponent's turn starts.