diff --git a/squirrelbattle/interfaces.py b/squirrelbattle/interfaces.py
index 3567ea0..50ebb2e 100644
--- a/squirrelbattle/interfaces.py
+++ b/squirrelbattle/interfaces.py
@@ -5,6 +5,7 @@ from enum import Enum, auto
 from math import sqrt
 from random import choice, randint
 from typing import List, Optional
+from itertools import product
 
 from .display.texturepack import TexturePack
 from .translations import gettext as _
@@ -180,6 +181,13 @@ class Map:
         for entisave in d["entities"]:
             self.add_entity(dictclasses[entisave["type"]](**entisave))
 
+    def large_neighbourhood(self, y, x):
+        neighbours = []
+        for dy, dx in product([-1, 0, 1], [-1, 0, 1]):
+            if 0 < y+dy < self.height and 0 < x+dx < self.width:
+                neighbours.append([y+dy, x+dx])
+        return neighbours
+
 
 class Tile(Enum):
     """