diff --git a/async-bot.py b/async-bot.py
index 257a3c7..d3071b6 100644
--- a/async-bot.py
+++ b/async-bot.py
@@ -1,4 +1,3 @@
-
 import asyncio
 from typing import Optional
 from socketio import AsyncSimpleClient
@@ -9,6 +8,7 @@ from base64 import b64decode
 from random import choice
 from json import load
 
+
 class AsyncBotManager:
     def __init__(self, base: str = "https://onemillioncheckboxes.com"):
         self.base = base
@@ -79,9 +79,7 @@ class AsyncBotManager:
                     current = self.canvas.getpixel((x, y)) > 0  # type: ignore
                     if current != expected:
                         print(bot_index, "swap", x, y)
-                        await sio.emit("toggle_bit", {
-                            "index": index
-                        })
+                        await sio.emit("toggle_bit", {"index": index})
                         await asyncio.sleep(0.25)
 
     async def __aenter__(self):
@@ -92,6 +90,11 @@ class AsyncBotManager:
         self._shutdown = True
         await self._listener_task
 
+    def copy(self):
+        copy = self.__class__(self.base)
+        copy.difference = dict.copy(self.difference)
+        return copy
+
 
 async def amain():
     with open("settings.json", "r") as fp:
@@ -113,10 +116,8 @@ async def amain():
                             r, g, b, a = im.getpixel((x, y))  # type: ignore
                             if a < 128:
                                 continue
-                            pocket_x = x + ox
-                            pocket_y = y + oy
 
-                            ndx_start = pocket_x * 3 + pocket_y * 577 * 3
+                            ndx_start = (x + ox + (y + oy) * 577) * 3
                             mgr.difference[ndx_start] = r > 128
                             mgr.difference[ndx_start + 1] = g > 128
                             mgr.difference[ndx_start + 2] = b > 128
@@ -131,21 +132,26 @@ async def amain():
                             ndx_start: int = (x + ox + (y + oy) * 250) * 16
                             color = (r >> 3) << 13
                             color |= (g >> 2) << 5
-                            color |= (b >> 3)
+                            color |= b >> 3
 
                             for i in range(16):
-                                mgr.difference[ndx_start + i] = ((color >> i) & 1) > 0
+                                mgr.difference[ndx_start + i] = (
+                                    (color >> i) & 1
+                                ) > 0
 
-        if (n_proxies := len(settings["proxies"])):
-            await asyncio.gather(*[
-                mgr.writer(i, settings["proxies"][i % n_proxies]) for i in range(settings["n_bots"])
-            ], return_exceptions=True)
+        if n_proxies := len(settings["proxies"]):
+            await asyncio.gather(
+                *[
+                    mgr.writer(i, settings["proxies"][i % n_proxies])
+                    for i in range(settings["n_bots"])
+                ],
+                return_exceptions=True,
+            )
         else:
-            await asyncio.gather(*[
-                mgr.writer(i) for i in range(settings["n_bots"])
-            ], return_exceptions=True)
-
-
+            await asyncio.gather(
+                *[mgr.writer(i) for i in range(settings["n_bots"])],
+                return_exceptions=True,
+            )
 
 
 if __name__ == "__main__":