cardinal (
        self,
        start,
        end,
        max=8,
        )

Return a cardinal direction path from START to END with no more than MAX moves, or None.

clone ( self )

Make a clone of this piece.

finalize (
        self,
        start,
        end,
        board,
        )

After a move from START to END on BOARD is complete, complete any necessary cleanup.

move (
        self,
        loc,
        board,
        )

Move this piece to LOC on BOARD.

omni (
        self,
        start,
        end,
        max=8,
        )

Return an omnidirectional path from START to END with no more than MAX moves, or None.

ordinal (
        self,
        start,
        end,
        max=8,
        )

Return an ordinal (diagonal) direction path from START to END with no more than MAX moves, or None.

path (
        self,
        start,
        end,
        )

Return a path from START to END.

possible ( self,  board )

Return a list of all possible moves for this piece on BOARD.

threat ( self,  board )

Is this piece on BOARD currently under threat?

validate (
        self,
        to,
        board,
        )

First phase of move validation; see if this piece can move to TO on BOARD under the allowed rules for this type of piece.

verify (
        self,
        to,
        board,
        )

Second phase of move validation; after verifying that TO is a legal move on BOARD for this piece, verify that in the context of the state of the game it is legal; e.g., a piece can make a move that would put its own king in check.

walk (
        self,
        path,
        board,
        )

Return true if PATH is a reasonable move on BOARD, independent of piece type.