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BGonline.org Forums
Does Backgammon NJ cheat?
Posted By: NJ In Response To: Does Backgammon NJ cheat? (Greg)
Date: Sunday, 20 June 2010, at 5:50 p.m.
Here are the amount rolls to enter if computer has one place open: 6,4,7,5,5,11,7,3,2,1,3,5,4. The computer rolls to enter in my home. 4,1,1,1,1,1,2,1,2,3,1,1,2,1.
I'm 100% positive that you didn't count this accurately. I think I need to put in a feature that keeps track of this because humans are not reliable enough to keep accurate statistics. For example, I'm guessing that if you got off the bar and then got hit the next turn, you might have counted that as not coming off the bar. Also, how did you handle having 2 pieces on the bar as opposed to 1?
Backgammon NJ includes extensive features that advanced users can use to show the game isn't cheating. There is a way to see the dice rolls up to 10000 rolls in advance, and the random number generator is even open sourced. So you can tell the computer isn't cheating by changing the dice on you. You can also tell that the computer isn't cheating by looking at upcoming dice rolls because you can show that it always makes the same moves for the same position/score (when playing on Expert level at full strength - on lower levels it has some randomness to it).
By the way, I have indeed corresponded with Greg via email and I think he plays on Hard level because he mentioned that the computer's ER was 9.2 and checker skill was 86%. On Expert it would be 0.0 and 100% because the error analysis is done using the Expert level AI. So winning 73% of the time on Hard level would definitely be more probable than on Expert.
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