Pieces are set up according to Chess960 rules, however unlike Fischer Random Chess, black and white have different starting positions.
1. Rules of the game
All Chess960 rules are in place, with one exception: black initial setup does not mirror white, it is independently randomly selected. Castling is allowed and works as in Chess960.
Because the initial position may give a significant advantage to one player, it is suggested that you play parallel games with colours reversed (you can select this option on the 'challenge' page).
Example initial position (one of ... plenty):
2. Hints
As it was already told, the initial position may give significant advantage to some player. For example while stronger player easily won this game being black, he had to work hard to secure draw in this one with white - surely in this setup black has more active and aggressive pieces.
Most of the advice shown on Chess960 page is valid, but one must be twice as careful, considering the fact that the pieces are assymetrically placed and both players have different problems and different opportunities.
3. Example games and maneouvres
Bishop steals the pawn - bishop capture looks suicidal at the first sight, but Qxc4 fails to cxd4. Interesting use of the rook initially placed on the c file.
Activate your pieces - white temporarily sacrifices the queen for two minors, to crush the opponent thanks to beautifully coordinated pieces.
More links to instructive/interesting Double Fischer Random games played on SchemingMind are welcome