Mazechess 1.93 rules are here

I’ve just tweaked a few of the 1.92 rules to make things a bit simpler. See all the versions at mazechess.com/rules but here is the current version:

MAZECHESS v1.93 
1.Move ♚King, ♞Knight, ♜Rook, or ♝Bishop from A1 to H8 on clear spaces (grey or white squares) in a minimum number of moves.
2.Only one piece on the board at any point in time
3.A Piece may be switched with another at any time. The cost of a switch is an extra move. A switched piece can land on the same space.
4.A piece cannot land on or move through lava , water ,  chasms  and dungeon walls  with the following exemptions:
4.1.A knight can move across any square except dungeon wall ,Rook can cross a single space dungeon walls  and a Bishop can cross a single space of water . In all cases must land on a clear space.