Diddle For Middle

The aim of this game is to score exactly 501, beginning and ending with a double.  The winner is the first player to do this.  A player has to hit any double, and only the double, before any of their throws count towards their score.  After this, darts must hit the target areas inside the thin inner triples ring for the score to count.  A bullseye is worth 25 and a double-bullseye 50 points.  Darts landing in the wedge between the triples ring and the bullseye score the number hit.  Each player has 3 throws, after which their score is added up and deducted from their current total.  When a score gets to 50 or below, a player must throw a double to end exactly on zero.  For this reason, players try to get left with an even number so they can double-out more easily.  It's known as a bust if a player scores more than the points they have left, in which case none of the throws in that round count and their score remains the same.