About moves. So brilliant moves can be occurred by all sorts of moves. Less likely is blunders and great moves. Great moves, on the other hand, are most likely occurred by bad moves, e.g: inaccuracy and blunders. I’m skipping best, excellent and good because it’s useless to make a theory about them. Inaccuracies are most likely occurred by an inaccuracy itself. We don’t have to make a theory about mistakes, misses and blunders.