Even if you move the same piece twice, you must make each move individually to make sure that the piece can first reside on the position in between the total. To move a piece off the bar, you must drag the piece from the bar to a valid spot on the board. To bear pieces off the board, just drag them off to the right, the pieces will instantly be removed. Of course, you have to be able, according to the rules, to bear off first. After that, the other player can double to 4, etc.
Scores appear after the first game.