105 checkout
105 checks out in three darts under double out: T20, S13, D16, for 60 + 13 + 32. If the treble 20 lands in the single 20, 85 is left and still on: T15, D20. Should the third dart, at the double 16, drop into the single 16, 16 is left for the next visit: D8. With only two darts in hand, T20, S13 leave 32, so D16. Under straight out, where any segment can finish: T20, T15. Under master out, where a treble can finish: T20, T15.
When a dart strays
A missed treble or double often drops into the single of the same segment, and a missed bull into the 25 around it. Here is what that leaves, and what comes next.
With fewer darts in hand
The finish is then out of reach: these darts set up the next visit.
Under the other checkout rules
Neighbouring scores
Let DartSync work out your finish
In a game, the scoreboard shows the route every visit, following the checkout rule you chose.
Play a game of 501