Hi,
There seems to be a bug in level 2004. The flow of the candies & cookies is from the middle channel, going from top to bottom then bottom to top on the two sides. When the candy in the top corner (highlighted by the circles) is destroyed, the cookie is not moving up to the top spot. Instead, a new candy appears from the top and takes up the top corner spot. It makes completing the board impossible unless some kind of wrapped candy booster or combo is used. I have attached a short video clip that demonstrate this anomaly. Thanks,