Build the maximum legal finish
Two treble 20s contribute 120 and the inner bull contributes 50 while serving as double 25 for the finish. The total is 170. An outer-ring double can contribute at most 40, so two maximum preceding darts plus that finish reach 160.
Above 160, a three-dart checkout therefore needs the 50 bull as the final dart in this standard framework. These are mathematical consequences of the board and double-out values, not a claim about the player’s likelihood of hitting them.
Why 169 has no route
Finishing 169 on the bull would require 119 from the first two darts. Each dart scores at most 60. To reach 119 with two darts, one would need 60 and 59 or a still larger unavailable score paired with a smaller one. The standard board has no 59 score from one dart.
Finishing on an outer-ring double would leave at least 129 for the first two darts, above their 120 maximum. Those two checks exclude the possible final-double routes. The argument explains impossibility under the stated rules rather than relying on a memorized checkout chart.
The exact number of darts matters
A169 total can be reduced through setup play across visits. Saying it is not a three-dart checkout does not mean the leg can never be won from that position. The player may leave another legal finish for a later turn.
Conversely,170 requires the stated full three-dart route; it is not a two-dart checkout. A graphic showing darts remaining supplies necessary context. Do not treat every displayed checkout number as equally available after one dart has already been used.
Keep the actual event format
The standard board and double-out requirement underpin this example. A different approved game format needs its own rules. The leg score must also be the actual remaining total, not a visit score or set tally.
This article derives original arithmetic from primary darts rules. It does not predict success, establish Canadian rights or claim IPTV Canada carriage. No physical playback test was performed.
Related questions
Why can the lower 169 be impossible in three darts?
The required legal segment combination is unavailable under double-out.
Does that mean a player can never win from 169?
No. It can use setup play and a later visit.
Sources and scope
Scope notes distinguish published documentation, supplied information and editorial methods. They do not report a hands-on service test.
- WDFpublishedboardandfinishrules — 1–20 segments triples doubles bull50 anddouble-outframework
- DRAruleshostedbyPDC — Standarddouble-out andbullasdouble25
