The fire’s back, but it’s isolated to start. The lone left column is always consumed by fire. The right open area is mostly random, and occasionaly a square appears available for your first move.
You can start working the ice in the open area first, but once you let that first fire appear in the open area, you need to focus on clearing the dots in the left column of the open area as efficiently as possible.
Once the fire starts dropping into the open area, make sure to clear dots next to the fire as much as possible as well.
Squares, as usual, are a huge help, but don’t let the fire get out of control in the quest for square set ups.