The better one plays, the less likely one is to suggest that bots cheat. Among the Giants of Backgammon
, I know of none who make the accusation. The following thread contains no fewer than 10 suggestions for checking up on your bot. On page 3, I summarize them all.
Here is a testimonial from the maker of eXtreme Gammon. He has read the source code for GnuBg, and even though it is a competitor, he states flatly that GnuBg does not cheat.
The complete thread begins here:
The problem is just that these programs are so darn good. When you sit down to play against one of them, your opponent is literally one of the 10 best backgammon players to have ever played the game. Sure, they win when the dice run hot, but they also win with ordinary dice. You tend to remember the hot streaks, and ignore the other games and matches. When we humans have a hot run of dice, we tend to remember that we won, and discount the many ways we were lucky.