[How to Play]
It consists of Plus Round and Minus Round which will appear in order.
If the outer circle is marked red, then it is a Plus Round and if the outer circle is marked blue,
then it is a Minus Round.
[Winning Condition]
The player or team with the most points at the end of the final round wins.
[Scoring Method]
During Plus Round, the round score is added to your total score.
During Minus Round, the round score is deducted from your total score and if you hit out of board,
then 50 points would be deducted.
Ex) If your total score is 150, and you score Double 15, Single 7, and miss the last throw during a Minus Round.
Your total score after the round will be 63 (150-30-7-50=63)
〆 Key Point
The key is to score as high as you can during the Plus Rounds and as low as you can during the Minu Rounds.