Surprise: 18,874,368X256X12
Example Positions



The rules for the random starting set up are as follows:
1. The royal piece is always on the same starting square as shown above. The royal piece is a random type of piece that can be a King, Queen, Bishop, Rook, Knight, pawn Amazon, Chancellor, or Archbishop.
2. On each back rank square other than the one that the royal piece is on is a random type of peice that can be a King, Queen, Bishop, Rook, Knight, Amazon, Chancellor, or Archbishop.
The promotion option is a random combination of King, Queen, Bishop, Rook, Knight, Amazon, Chancellor, or Archbishop, on a random rank between 3 and 14. Sometimes the promotion option might be something like KQBH, while other times it would be something like RNA.
Castling on either side would be allowed.
With what I just described there are 18,874,368 possible random starting positions, 256 possible random rules for what pawns can promote to, including the possibility that pawns can't promote, and 12 random ranks pawns would promote on.
It would also be a game of points with 20 points for checkmate.









I doubt everyone does, but it looks almost like a PyChess variant.