diff --git a/src/tools/grid.py b/src/tools/grid.py
index 777c300..d877c79 100644
--- a/src/tools/grid.py
+++ b/src/tools/grid.py
@@ -1,11 +1,9 @@
 from __future__ import annotations
-
 import re
-from collections import deque
-from collections.abc import Callable
-
 from .aoc_ocr import convert_array_6
 from .coordinate import Coordinate, DistanceAlgorithm, Shape
+from collections import deque
+from collections.abc import Callable
 from enum import Enum
 from heapq import heappop, heappush
 from math import inf
@@ -219,17 +217,17 @@ class Grid:
 
     def getActiveCells(
         self, x: int = None, y: int = None, z: int = None
-    ) -> List[Coordinate]:
+    ) -> Iterable[Coordinate]:
         if x is not None or y is not None or z is not None:
-            return [
+            return (
                 c
                 for c in self.__grid.keys()
                 if (c.x == x if x is not None else True)
                 and (c.y == y if y is not None else True)
                 and (c.z == z if z is not None else True)
-            ]
+            )
         else:
-            return list(self.__grid.keys())
+            return self.__grid.keys()
 
     def getActiveRegion(
         self,
@@ -684,17 +682,5 @@ class Grid:
 
         return grid
 
-    def __eq__(self, other: Grid) -> bool:
-        if not isinstance(other, Grid):
-            return False
-
-        other_active = set(other.getActiveCells())
-        for c, v in self.__grid.items():
-            if other.get(c) != v:
-                return False
-            other_active.remove(c)
-
-        if other_active:
-            return False
-
-        return True
+    def __hash__(self):
+        return hash(frozenset(self.__grid.items()))