What's the purpose of writing a rule of a game when the system does not apply it?

Look at this move White to play 65. White is forced according to rules to unblock a point in the 6 prime to allow an opponent to move.

This is the corresponding rule Brainking has:
It is allowed to build a prime (six consecutive blocked points) anywhere else (not in the player's starting quarter), but if opponent has collected all his checkers onto the one point behind player's prime, the player must unblock a point in his prime to allow the opponent a chance to move.

The implementation has also another serious flaw.
I will make an overview in some days about what improvements need to be made in Fevga in this site, to the rules and to the implementation that is buggy.