playBunny: That's interesting. I wonder which set of rules would take precedence. I believe the English ones should be primary with regard to the other translations but Czech is Fencer's language so I wonder whether the English set is a translation of the Czech, vice versa or are they independant?

Even though I don't know what you mean saying that the English rules should take precedence with regard to the other translations, I believe the rules should be interpreted in connection with what the game itself allows you and more importantly, what has been declared by Fencer on the discussion boards. To answer your question - I'm sure most of the rules were written first in Czech (since the Czech ones are more comprehensive and Czech is Fencer's mother tongue). Why would Fencer write something in English and then translate it back to his own language? As for this backgammon problem, I think that Fencer said somewhere that it was a bug and would be eventually fixed. That means it's up to the players how will they play. You say playing by the Worldwide Backgammon Federation rules shows more sport, I agree with that but if your opponent doesn't I suggest to move on, maybe mention it to your opponent in the game discussion and wait for the rule to be implemented.