fixed circular dependency

src/logic/pieces/piece.py

@@ -1,6 +1,4 @@
-from logic.board import Board
 from logic.position import Position
-from logic.move import Move
 from enum import Enum
 
 
@@ -9,7 +7,6 @@ class Colour(Enum):
     BLACK = "black"
 
 class Piece:
-
     def __init__(self, pos: Position, colour: Colour) -> None:
         self.pos = pos
         assert colour == Colour.WHITE or colour == Colour.BLACK, "The colour of the piece must be either Piece.WHITE or Piece.BLACK"
@@ -18,5 +15,5 @@ class Piece:
     def position(self) -> Position:
         return self.pos
 
-    def legal_moves(self, board: Board) -> list[Move]:
+    def legal_moves(self, board: "Board") -> list["Move"]:
         raise NotImplementedError(f"Can't say what the legal moves are for {type(self).__name__}, the method hasn't been implemented yet")