Just to clarify: a beginning professional player (as in, a player who is considered of professional rank in the Go world, but just in the beginning of their car

Just to clarify: a beginning professional player (as in, a player who is considered of professional rank in the Go world, but just in the beginning of their career) will beat any top Go player with 99%+ certainty at 4 stones. The difference between professional players are far less than 4 stones. If you meant a student studying to be a professional, then 4 stones would probably be true for an even chance game.