The first such Candidates tournament was held in Moscow, 1952. Elisaveta Bykova won and proceeded to defeat Rudenko with seven wins, five losses, and two draws to become the third champion. The next Candidates tournament was won by Olga Rubtsova. Instead of directly playing Bykova, however, FIDE decided that the championship should be held between the three top players in the world. Rubtsova won at Moscow in 1956, one-half point ahead of Bykova, who finished five points ahead of Rudenko. Bykova regained the title in 1958 and defended it against Kira Zvorykina, winner of a Candidates tournament, in 1959.