Walter Montego:

In the current setup package of SMIRF beta there is a file "Variants.pgn" included containing that mirrored MBC. You can store a lot of other variant starting positions that way as long as they are using the Capablanca or traditional chess rules.

Like in Chess960 / Fischer Random Chess in CRC castling is defined by the END POSITIONS of involved King and Rook instead of the steps done by the King. Without that interpretation it would not be able to supply every CRC position with a castling ability. CRC uses only about 1/2 of those 48000 different setups to secure all paws to be covered, to remove some initial "traps".

Reinhard.