Backgammon notation Similarly, 13/7*/5 denotes a move corresponding to a roll 6-2 and a checker moving from 13 to 5 hitting a checker at the in-between step at point 7. Moves resulting from double rolls are often indicated by placing the number of checkers moved in parentheses after the move. For example, the effect of a roll 2-2, could be: 6/4(3) 13/11. Finally, it is common to use the words "bar" and "off" to describe moves where checkers are entered from the bar or taken off during bear off. For instance bar/22 17/9, and 5/off 2/off. Backgammon notation Backgammon notation is a
Backgammon against the reigning world champion Luigi Villa. It won the match, 7–1, becoming the first computer program to defeat a world champion in any board game. Berliner stated that the victory was largely a matter of luck, as the computer received more favorable dice rolls. In the late 1980s, backgammon programmers found more success with an approach based on artificial neural networks. TD-Gammon, developed by Gerald Tesauro of IBM, was the first of these programs to play near the expert level. Its neural network was trained using temporal difference learning applied to data generated from self-play. According to assessments by