[RandomAvatarFan]

Actually, wasn't the rules originally that

When I (Beatrice) speak the truth, I (Beatrice) will use the red.

Battler wasn't permitted to use the red until EP4. In fact, that was the only time he was implicitly allowed to use it. After that, Battler did use it though.

Remember when Ryukishi likened the gold to a "finishing move that if anyone knows the code, they can use."

Sure, Beato allowed Battler and Ange to say things in red. They were true. But once the game was hijacked in EP5, Lambda and Bern were more strict on the rules. It's like playing a game with certain house rules, and then once you go to the official games, all of a sudden, you can't do those things any more.

Reread EP1's tea-party. Battler challeneged Beatrice game to the hundreds of years worth of mystery novels. Therefore, the detective had to gather clues, and only the clues that the detective gathered had any meaning.

Bern and Lambda weren't scribbling on their board; they were playing by the rules as they were set out back in EP1. There aren't any magical forces keeping a player from moving a rook diagonally, but it's an illegal move and will have to be taken back. That's what Virgilia's red is.