66 Out - Always start with T10

Almost any way you miss, there is another out with the two remaining darts.

If you hit T10, the out is D18

If you miss T10 and hit S10, the out is S16, D20

If you miss T10 and hit T6, the out is S16, D16

If you miss T10 and hit S6, the out is S20, D20

If you miss T10 and hit T15, the out is S5, D8

If you miss T10 and hit S15, the out is S19, D16