The Dink Network

In the beginning, only your bombs do damage. You cannot throw fire at this point. You have to kill the dragon with your bombs. A hint is that the dragon pops out according to where you are on the screen so it's fairly easy to lay a bomb in front of one door and position yourself so that he comes out that door.

Sorry to hear about your arthritis problem. Makes me glad to be young. I hope the operations go well and you'll be back