Rollout

How it works in play

A rollout plays a position out to the end many times over, the engine making every move for both sides, and averages the results. Because it rests on play rather than a single evaluation, it is the strongest evidence for an opening move or a cube decision. The numbers on the opening-roll pages are 1,296-game GNU Backgammon rollouts.

Related terms

• Equity — The expected value of a position, typically expressed in cube units or points.
• Cubeful / cubeless equity — A position’s expected value with and without future cube actions accounted for.
• PR — Performance rating: average equity error per decision versus a neural-net analyzer. Lower is better; world class is under 2.
• XG — eXtreme Gammon — the leading commercial backgammon analyzer.

Go deeper

• The 15 opening rolls
• History: the computer era
• Backgammon strategy, from first roll to bear-off

In other languages

• العربيةالمحاكاة (Rollout)
• ΕλληνικάRollout
• فارسیرول‌اوت (Rollout)
• עבריתרולאאוט (Rollout)
• РусскийРоллаут (rollout)
• TürkçeRollout