Checking out 141

The standard route

T20 T19 D12

After the first dart

leaves 81 — T19 D12

After the second dart: leaves 24 — D12

If the first dart misses

• T19 T20 D12
• T20 T15 D18
• T20 T17 D15

With two darts

There is no two-dart finish from here.