I think this is currently only Frans Morsch, Matthias Feist, Stefan Meyer Kahlen, Vasik Rajlich and Marc Uniacke. (Of the people who write programs. For example Convekta and ChessBase have more people not directly involved with the engines)Roger Brown wrote: I agree that professional should mean what you say above but then, doesn't that now open the door to proving whether or not there are any professional programmers around? Is there anyone that earns their living from computer chess programming? Is that classification valid?
The organizers could asks for excerpts from the accounting, for example.
This is what the ICGA is doing and what some people here are outraged about. They figure that if the promotion by being able to use the commercial name is important for you, you can afford the higher fee, and if you can't afford it, you should forgo the publicity and have to use another name.Maybe the focus should shift to the program itself. Programs for sale and those not for sale.
For me, the promotion is unimportant compared to participating, so I don't mind using another name. For the same reason, I'm quite sure Shredder and Rybka will pay the full fee and enter under their own name.