They aren't really artificial restraints though, more like artificial advantages without them. The interface delay challenges are pretty relevant to making thi

They aren't really artificial restraints though, more like artificial advantages without them. The interface delay challenges are pretty relevant to making things fair in almost ANY competition. The physical part of the interface is an essential part of the game here. You aren't really testing the thing you really want to test otherwise. You could probably play tennis pretty well against Nadal if you made him wear goggles that gave him a quarter second delay in response time, but that's not really a fair test. All other things being equal, if you match up two chess players, and one can just say or think the position instead of having to physically move the piece before they hit the clock, that advantage will accumulate over time.