If the ball is selected with precision, it can significantly increase the overall two-colour award. How then can a total of 16 numbers from 01 to 16 be excluded from the list of low-risk numbers? That's what we often call a blueball kill. The following is a summary of the terms of the blueball killer and the related formula, for which reference is welcome。Double-colour blueball killer condition:Not available at end of previous period: 06 1