Walter: I don't agree that the flaw is in the name of the game.

BrainKing Backgammon is standard 1-point Backgammon.
Here's the logic behind that statement.

1] If the ability to make the move in question were part of BrainKing Backgammon then it would be a feature of the game.
True or false.

2] If the move was a feature then the server wouldn't need to protect against it.
True or false.

3] The fact that the server doesn't protect against it has been acknowledged as a bug.
This is undeniable.

4] As the ability to make this move is an artefact of a bug then it's not a feature.
True or false.

5] If it's not a feature and it's due to a bug, then the move is illegal.
True or false.

6] If the move is illegal then BK Backgammon is standard 1-point Backgammon, but with a flaw in the implementation.
True or false.

7] If BK Backgammon is standard 1-point Backgammon then making the illegal move that the server fails to prevent is against the rules.
True or false.

For me it's True all the way down and I don't know how you can see it any other way; perhaps you can show me what's wrong or missing.