163 checkout
In short
163 is a bogey number: no combination of three darts finishes it under double out. Throw T20, T20, S11 instead, leaving 32, so D16 on the next visit. Even under master out, where a treble can finish, there is no checkout.
Why there is no finish
Three darts score up to 180, but the last one has to be a double: T20, T20 and the bull make 170, the ceiling. Below it, 7 scores fall between the possible combinations: 169, 168, 166, 165, 163, 162, 159.
What to aim for instead
This visit leaves you 32: D16 to finish on your next turn.
T20
60
T20
60
S11
11
Under the other checkout rules
Master out
finish on a double or a treble
No finish in three darts
Straight out
any segment can finish
No finish in three darts
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