diff --git a/pyalapin/engine/engine.py b/pyalapin/engine/engine.py
index 8e959aa..bdf26e2 100644
--- a/pyalapin/engine/engine.py
+++ b/pyalapin/engine/engine.py
@@ -968,7 +968,9 @@ class Game:
 
     game_status = []
 
-    def __init__(self, player1=None, player2=None, automatic_draw=True, ai=False, save_pgn=False):
+    def __init__(
+        self, player1=None, player2=None, automatic_draw=True, ai=False, save_pgn=False
+    ):
         """Initialization of the cell.
 
         Parameters
diff --git a/pyalapin/engine/move.py b/pyalapin/engine/move.py
index 5a7deea..c2d5261 100644
--- a/pyalapin/engine/move.py
+++ b/pyalapin/engine/move.py
@@ -124,12 +124,20 @@ def to_pgn(self):
         if self.killed_piece is not None:
             start = "x"
         elif self.is_castling:
-            if (self.moved_piece.is_white() and self.end.y == 1) or (not self.moved_piece.is_white() and self.end.y == 6):
+            if (self.moved_piece.is_white() and self.end.y == 1) or (
+                not self.moved_piece.is_white() and self.end.y == 6
+            ):
                 piece = "O-O-O"
                 start = ""
                 end = ""
-        king = self.board.white_king if not self.player.white_side else self.board.black_king
-        if self.board.get_cell(king.x, king.y).is_threatened(board=self.board, threaten_color=not self.player.white_side):
+        king = (
+            self.board.white_king
+            if not self.player.white_side
+            else self.board.black_king
+        )
+        if self.board.get_cell(king.x, king.y).is_threatened(
+            board=self.board, threaten_color=not self.player.white_side
+        ):
             end += "+"
 
         print(piece, start, end)
diff --git a/tests/unit_test/engine_test.py b/tests/unit_test/engine_test.py
index 69fb78e..810b3e2 100644
--- a/tests/unit_test/engine_test.py
+++ b/tests/unit_test/engine_test.py
@@ -149,6 +149,5 @@ def test_pgn():
     game.move_from_coordinates(game.player2, 6, 5, 4, 5)
     game.move_from_coordinates(game.player1, 0, 3, 4, 7)
     game.move_from_coordinates(game.player2, 6, 6, 5, 6)
-    
-    assert game.to_pgn() == "1.e4 f5 2.Qh5+ g6"
 
+    assert game.to_pgn() == "1.e4 f5 2.Qh5+ g6"