Look the position Fevga (Jaak vs. AlterMann) , please! All black checkers are blocked, but they are not collected onto the one point behind player's prime. Thus BrainKing Fevga rules http://brainking.com/en/GameRules?tp=111 don´t require to unblock a point in the prime to allow the opponent a chance to move. I used this possibility and moved 41. 18-23, 18-23, 17-22, 19-24 Backgammon Galore has the same rules http://www.bkgm.com/variants/Fevga.html but there is a reference of George Savdar http://www.bkgm.com/rgb/rgb.cgi?view+1202 that there are many different variations in Greece. The main variation has a rule: If you have a 6-prime and the opponent can't move at any dice (for example has all his checkers behind this prime (not the only case), you MUST free one point in your turn in order the opponent to have non-zero probability to move. So, according to this rule I did an illegale move. Where is the truth?
Jaak: I recently read that rule somewhere as well, and noticed we did not have that here. I just assumed maybe there are more than one version of "Fevga"
I had been curious, because GoldToken just added a game VERY similar to Fevga, but it's called "Moultezim". With that game the tiny difference between it and what we have here is that you can not fill more than 4 pips in your opponent's starting area. (Fevga is 5 pieces in your own starting area) PLUS it had the rule you mention, for Fevga.