137 checkout

In short

137 checks out in three darts under double out: T20, T19, D10, for 60 + 57 + 20. If the treble 20 lands in the single 20, 117 is left, out of reach with two darts left: T20, S17 leave 40, so D20 on the next visit. Should the second dart, at the treble 19, drop into the single 19, 58 is left, out of reach with the last dart: S18 leaves 40, so D20 on the next visit. With only two darts in hand, T20, T15 leave 32, so D16. Under straight out, where any segment can finish: T20, T20, S17.

T20

T19

D10

Double out

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.

treble 20 → single 20

117 left, set up 40, so D20 on the next visit

T20

S17

treble 19 → single 19

58 left, set up 40, so D20 on the next visit

S18

double 10 → single 10

10 left, on the next visit

With fewer darts in hand

The finish is then out of reach: these darts set up the next visit.

Two darts

leaves 32, so D16

T20

T15

Under the other checkout rules

Master out

finish on a double or a treble

Same route as under double out

Straight out

any segment can finish

T20

S17

Neighbouring scores

138 136 The full checkout chart

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