When did wilt chamberlin set the record for 100 points in one game?

it was march 2 1962 warriors vs knicks in hershey pa. and john the rule change in 1968 related to defensive players it said that once the ball was in the front court the defender couldnt stasnd in the paint for more than 3 if his man wasnt in the paint look it up at nba.com under rules history.