The world is a chessboard on which the pieces of the British monarchy play an essential role. Within that framework, three women have dominated the scene in a preponderant way. Elizabeth II, the queen that she was, was so by the random movement of the succession chains. In her own way, she exercised leadership and set the course of the game for decades. Diana, who was not allowed to be queen, ended up being so, perhaps forever, because she knew how to win the hearts of all thanks to her efforts to achieve a better world. She was prematurely removed from the board, still with more questions than answers. And Camilla, the one who was not to be, ended up becoming queen consort. And the three queens have been playing their roles with a common factor: King Charles III, of whom they have been respectively mother, deceased wife and current wife. Analyzing the moves, personalities and secrets of each of the three queens gives us the keys to the game at present and allows us to anticipate what will happen in the imminent future, now that one of the most decisive institutions of world chess is in check.