Chess960
Chess960, also known as Fischer Random Chess, after its inventor, former World Chess Champion Bobby Fischer, provides a new variety of chess opening positions, thus obviating in most cases reliance on opening theory. There are 959 possible positions, plus the classical one, hence the name.
Setting up the board
The board is set up as follows: as in normal chess, the pieces occupy the first rank and the pawns the second. The queen, bishops and knights are distributed randomly according to an accepted method, with the bishops occupying different coloured squares. This leaves three empty squares on each side: the king is placed on the central one, and the rooks on the other two, so that castling is possible. The positions of black and white are, as in regular chess, arranged to mirror each other, with queen opposite queen, and so on.