diff --git a/v5/Window.py b/v5/Window.py
index 94f3c39..b195883 100644
--- a/v5/Window.py
+++ b/v5/Window.py
@@ -7,22 +7,9 @@ WIDTH = 900
 class Window(arcade.Window):
   def __init__(self):
     super().__init__(WIDTH, HEIGHT, "OGS Memory")
-    #arcade.set_background_color(arcade.color.GRAY)
     arcade.set_background_color(arcade.color.WHITE)
     self.all_sprites = arcade.SpriteList()
 
-#    # Animated begin button.
-#    player = arcade.AnimatedTimeBasedSprite()
-#    for i in range(2):
-#      tex = arcade.load_texture("res/buttons_begin.png", x = i*350, y = 0, width = 350, height = 100)
-#      player.append_texture(tex)
-#      #player.color = arcade.color.BLUE
-#      a = arcade.sprite.AnimationKeyframe(i, 700, tex)
-#      player.frames.append(a)
-#      player.center_x = 300
-#      player.center_y = 200
-#    self.all_sprites.append(player)
-
     positions = [
       [9, 1],
       [14, 1],
@@ -49,15 +36,23 @@ class Window(arcade.Window):
 
   def on_draw(self):
     arcade.start_render()
-    #arcade.draw_circle_filled(400, 300, 15, arcade.color.BLUE)
     self.all_sprites.draw()
 
+  def on_mouse_press(self, x, y, button, key_modifiers):
+    print("click", x, y)
+    sprites = arcade.get_sprites_at_point([x, y], self.all_sprites)
+    if len(sprites) == 1:
+      print("selected: ", sprites[0].guid)
+
   def on_update(self, delta):
     self.all_sprites.update_animation()
 
 def add_tiles(sprites, positions):
+    id = 0
     for p in positions:
       tile = arcade.AnimatedTimeBasedSprite()
+      tile.guid = id
+      id += 1
       for i in range(2):
         tex = arcade.load_texture("res/tiles_0.png", x = i*75, y = 0, width = 75, height = 100)
         tile.append_texture(tex)