In 1960 , Botvinnik was convincingly beaten 8 1/2 -- 12 1/2 at Moscow by Tal , now 23 years old , but again exercised his right to a rematch in 1961 , and won by 13 -- 8 in Moscow .
In 1960 , Botvinnik was convincingly beaten 8 1/2 -12 1/2 at Moscow by Tal , now 23 years old , but again exercised his right to a rematch in 1961 , and won by 13 -- 8 in Moscow .