I met Susan and her sisters at the National Open tournament in Las Vegas, 2005. They didn't actually play in the tournament, but they did give talks, lectures, and "triplex" simul (where they took turns on each game making moves for the White pieces). We also went to a breakfast that they hosted. I'm in love with Sofia Polgar, and had a few pictures taken of her. Although she hasn't played professionally for some years, she's still pretty sharp. As for the puzzle, I can't come up with anything better than Pf6, so what's the solution?