Backgammon according to the normal movement rules. The first player to bear off all fifteen of his/her own checkers wins the game. If the opponent has not yet borne off any checkers when the game ends, the winner scores a "gammon", which counts for double stakes. If the opponent has not yet borne off any checkers and has some on the bar or in the winner's home board, the winner scores a "backgammon", which counts for triple stakes. To speed up match play and to provide an added dimension for strategy, a doubling cube is usually used. The doubling cube is
Rollout (backgammon) against the player who chose that strategy. When comparing moves, a weak backgame AI may favor less aggressive style. It is therefore not uncommon to see slightly different outcomes from rollouts done with different programs. Nevertheless, rollouts whose results are consistently nonintuitive occur, and their results are usually accepted by most backgammon players. In fact, modern backgammon opening theory is mostly based on rollouts.. Rollout (backgammon) A rollout is an analysis technique for backgammon positions and moves. A rollout consists of playing the same position many times (with different dice rolls) and recording the results. The balance of wins and