diff --git a/__pycache__/gen_algo.cpython-38.pyc b/__pycache__/gen_algo.cpython-38.pyc
index 405cda6c515797b0d78076361d961454e2fab437..e443f1958249d7a16fd85be2d5794cce403be55b 100644
Binary files a/__pycache__/gen_algo.cpython-38.pyc and b/__pycache__/gen_algo.cpython-38.pyc differ
diff --git a/gen_algo.py b/gen_algo.py
index 5aba5f06ad5ca2fc675cec194302d9bb0d9a09ef..2c5be1144fa18832c9dd43f119273f49a2602ebb 100644
--- a/gen_algo.py
+++ b/gen_algo.py
@@ -12,7 +12,7 @@ class Game(object):
     # entrance : 2
     # exit : 3
 
-    def __init__(self, shape=(3, 7)):
+    def __init__(self, shape=(3, 7), holes=0):
 
         self.dist_factor = 5
         self.exploration_factor = 6
@@ -65,6 +65,19 @@ class Game(object):
             for i in temp:
                 queue.append(i)
 
+        for _ in range(holes):
+            if random.random() < 0.5:
+                verti = 2 * random.randint(
+                    1, self.maze.shape[1] // 2 - 1
+                )  # odd between 0 and shape[1]-1
+                hori = 2 * random.randint(0, self.maze.shape[0] // 2 - 1) + 1
+            else:
+                hori = 2 * random.randint(1, self.maze.shape[0] // 2 - 1)
+                verti = 2 * random.randint(0, self.maze.shape[1] // 2 - 1) + 1
+
+            if self.maze[hori, verti] == 1:
+                self.maze[hori, verti] = 0
+
         self.maze[self.entrance] = 2
         self.maze[self.exit] = 3
 
diff --git a/main.py b/main.py
index 5aef399df4166997ec6b3c719b5665f1c1a1f280..af171804639aac15c64b9c3b1c435b22cbb6a4cc 100644
--- a/main.py
+++ b/main.py
@@ -18,6 +18,7 @@ show_path_color = (160, 225, 55)
 
 #### Back
 shape = (10, 10)
+holes = 5
 number_of_generations = 1000
 pop_card = 3000
 elite = 0.01
@@ -33,7 +34,7 @@ pygame.init()
 # Init game
 t0 = time.time()
 
-game = Game(shape)
+game = Game(shape=shape, holes=holes)
 algo = GA(
     game,
     genome_length=max_moves,
diff --git a/main_seq.py b/main_seq.py
index ad07dc4468a81d64c7f2bb84e7eaab3b63081fc2..307c032607dd999f80fe5c9fe708ab8017ee878b 100644
--- a/main_seq.py
+++ b/main_seq.py
@@ -18,6 +18,7 @@ show_path_color = (160, 225, 55)
 
 #### Back
 shape = (10, 20)
+holes = 10
 number_of_generations = 1000
 pop_card = 3000
 elite = 0.01
@@ -33,7 +34,7 @@ pygame.init()
 # Init game
 t0 = time.time()
 
-game = Game(shape)
+game = Game(shape=shape, holes=holes)
 algo = GA(
     game,
     genome_length=max_moves,