Quoting A Monkey
Tell me, how do you play 4-way chess?
The pieces move the same way as in standard chess--but players take their turns in rounds and the kings and queens are set up the same way for all players. The game ends when one player slays two kings; the pieces of the defeated may either become controlled by the conquerer or become immobile obstacles. That's how to play; but how *you* play is much different. The game is thrice as hard as the standard and takes two to four times as long to play.That summarize it for you? :]