remove moving tail of snake when begin moves are done and not calculate own body in avoid_snakes because already avoid own body

snakes/BetterMasterSnake.py

@@ -35,6 +35,13 @@ class BetterMasterSnake(TemplateSnake):
             }
         }
 
+    def get_snake_body_without_snake_tail(self, snake:list[dict]):
+        if len(set((pos["x"], pos["y"]) for pos in snake)) < 3:
+            return snake
+
+        snake.pop()
+        return snake
+
     def avoid_my_body(self, my_body, possible_moves:dict) -> list:
         """
         my_body: List of dictionaries of x/y coordinates for every segment of a Battlesnake.
@@ -70,8 +77,11 @@ class BetterMasterSnake(TemplateSnake):
     def avoid_snakes(self, snakes:list, possible_moves:dict):
         remove = []
         for snake in snakes:
+            if snake["id"] == self.my_snake["id"]:
+                continue
+
             for direction, location in possible_moves.items():
-                if location in snake["body"]:
+                if location in self.get_snake_body_without_snake_tail(snake["body"]):
                     remove.append(direction)
 
         remove = set(remove)