eXtreme Gammon
eXtreme Gammon is backgammon software written by Xavier Dufaure de Citres and released in 2009.[1] It is available for Microsoft Windows and mobile platforms.
According to the Financial Times, the program is the best backgammon player in the world, and the near-exclusive study tool for all serious backgammon players.[1]
Performance rating
[edit]eXtreme Gammon provides a widely accepted benchmark number for players' skills called the Performance Rating or PR, with a lower number indicating a better rating. PR is the average equity lost per decision multiplied by 500. Only decisions not considered to be "obvious" are counted. [1][2]
| PR | Description | ELO equalivent |
| 0.0-2.5 | World Champ | 2162-2240 |
| 2.5-5.0 | World Class | 2077-2162 |
| 5.0-7.5 | Expert | 1986-2077 |
| 7.5-12.5 | Advanced | 1792-1986 |
| 12.5-17.5 | Intermediate | 1593-1792 |
| 17.5-22.5 | Casual Player | 1405-1593 |
| 22.5-30.0 | Beginner | 1167-1405 |
| 30.0 or more | Casual Player | 1167 or less |
References
[edit]- ^ a b c Roeder, Oliver (2023-07-28). "Backgammon's AI super-brain is for sale". Financial Times. Retrieved 2023-08-01.
- ^ https://www.extremegammon.com/extremegammon2.pdf
External links
[edit]
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