It does not prevent or allow anyone to play golf, it's a question of club membership, and there are some things, like Augustus and the Daughters of the American Revolution that are gender specific. Women can play at Augusta if they are with a member, they just can't be the member. What is happening here is that the president of IBM, being a major sponsor has always been given a membership, which I bet they will continue with, money trumping gender. To be sure they have been looking for a way out of that historical problem for a while now, and this will be that out.