DOUBLE YOUR OPPONENT

- Select the Cube Used option

- Click on the Cube 

BEAVER YOUR OPPONENT (if selected)

- Note: Beaver option is not standard play

- After the Cube is passed to you

  - Accept the double then   
  - Click on the Cube within 3 seconds

       WHEN TO DOUBLE

   Your     -- Pip Count Lead --
 Pip Count  Consider      Should
 --------   --------     -------   
 100-120      15 +         20 + 
   80-100      12 +         16 +
   70-80         9 +          12 +
   60-70         6 +           8 +

You should also consider other factors such as general distribution of yours and your opponents pieces, each players innerboard points and pieces on the BAR. 

ACCEPTING A DOUBLE

Accept a double when you are not more than the "Should" column pips behind with the same considerations as doubling such as distribution, innerboard points, pieces on the BAR, etc.