> forced into checkmate because there's only a 2×2 square left and nowhere else for the kings to go except within each others' attack range. If the only two pi

> forced into checkmate because there's only a 2×2 square left and nowhere else for the kings to go except within each others' attack range. If the only two pieces left are kings, that is a stalemate. It is not even a legal move for two kings to come within one square of each other.