Editting for an explanation because it was wrong anyways: this works because no matter which way Pandora will get all 5 names and there is no way the cheat can get all 5. If she picks the 3rd there is no other pm that contains the other 2 so she can't get all 5.
(This post was last modified: 11-06-2009, 04:13 AM by Captain Usopp.)