Richard III: Doesn't D-pente involve the option for position-swapping at some point? That does eliminate the P1 advantage, but to me, it changes the essence of the game. If there is one (or more than one) option to swap colors, then the game becomes psychological, a kind of poker-like game where the object is to trick your opponent into taking the weaker positoin. I can understand why Gary might like a game like that (he plays more than a bit of poker, I believe, as well as pente), but that doesn't look like pente anymore to me.