However , Alekhine won the match , played at Buenos Aires , by 6 wins , 3 losses , and 25 draws â `` the longest World Championship match until the World Chess Championship 1984 -- 85 between Anatoly Karpov and Garry Kasparov . However , Alekhine won the match , played from September to November 1927 at Buenos Aires , by 6 wins , 3 losses , and 25 draws â `` the longest formal World Championship match until the contest in 1984 â `` 85 between Anatoly Karpov and Garry Kasparov .