The description is not clear about whether the ('virtual') KxK that forbids Kings to step next to each other is exempted from the annihilation rule. (And if not, what happens when both Kings annihilate each other.) The Diagram assumes it is illegal for Kings to step next to each other (by exempting KxK from the rule).
The description is not clear about whether the ('virtual') KxK that forbids Kings to step next to each other is exempted from the annihilation rule. (And if not, what happens when both Kings annihilate each other.) The Diagram assumes it is illegal for Kings to step next to each other (by exempting KxK from the rule).