Invert FEN output

tools.py

@@ -174,7 +174,10 @@ class ChessGameFenTool(BaseCustomTool):
 
     def forward(self, piece_placement: str, player_turn: str) -> str:
         """Use the tool."""
-        fen_message = f"""Assuming {player_turn} has the next turn, Use the following placement
+        fen_message = f"""First, invert the FEN string making it (rank 1 at top) 
+and mirrored (file 'a' at right), but formatted according to the strict FEN 
+standard (reading from the top-left of the standard board layout). Then, 
+assuming {player_turn} has the next turn, Use the following placement
 {piece_placement} and provide the board state as FEN. Do not provide any
 additional thinking or commentary in the response, the FEN only."""
         messages = [{ "content": fen_message,"role": "user"}]