Symmetric Snark Hunting

This is symmetric version of SNARK HUNT game.

Setup

ssssss
rnqknr
pppppp
##....
......
...###
......
##....
PPPPPP
RNQKNR
SSSSSS

Pieces

• Wall (#): Nothing can step here and it cannot move (knights and boojums first step leaping over it is OK). (It is neutral piece; not black and white.)
• Snark (S): Move one step any direction, or can change into a Boojum and make such move.
• Boojum (J): Move as a queen but must move more than one space; leaps over the one space (without affecting it) regardless of what is standing there.
• Pawn (or fork) (P): As FIDE pawn, no initial double step. Promote on last row to a Rook, Knight, Queen, or King, of either color.
• Knight (or banker) (N): As FIDE knight, or move one space orthogonal.
• Rook (or barrister) (R): As FIDE rook, or move two space diagonal with leaping.
• Queen (or bellman) (Q): As FIDE queen.
• King (or baker) (K): As FIDE king. However, there is no check (so, moving into check is permitted), and castling is only queenside (king two spaces queensway, rook over it; moving into/out/through check is permitted).

Rules

Rules is like FIDE chess, but no check/mate/castling/enpassan. King and Snark are called royal pieces. Lose if you have only one royal piece remaining, or if you have no legal move.