Appendix B - Rollout Notes
All of the rollouts shown in this guide were generated using a modified build of GNU Backgammon v1.07.001 that I extended to include support for 5-ply checker and cube evaluations.
The specific settings I used are listed below.
GNU Backgammon Rollout Settings
- Cubeful rollouts with variance reduction and quasi-random dice
- Rollouts continued until equity standard error reached the 0.0010 - 0.0012 range
- Trials truncated at ply 6 for checker play, ply 7 for cube decisions
- Bearoffs truncated at exact bearoff database
- Both players' intermediate moves evaluated at "Supremo" level (2-ply, large move filter)
- Truncation point evaluated at "Grandmaster" level (3-ply, large move filter)
- Cube decisions used same settings as checker play