The Soviet Championships were usually the strongest tournaments in the world during Vasiukov's main competitive period, surpassing the strength of
Interzonals, with very few if any weaker opponents, since the arduous qualifying process eliminated the outsiders. Other than his superb showing in 1961, Vasiukov usually played below his expectations in these finals. He qualified for the finals a total of eleven times. At
Kyiv 1964–65 (URS-ch32), he scored 8/19 to tie 13–14th place; the winner was Korchnoi. At
Tallinn 1965 (URS-ch33), he again made only 8/19 for a tied 14-17th place; the winner was Stein. At
Tbilisi 1966 (URS-ch34), also a Zonal, he scored below 50% once more with 9/20, for a tied 14-16th place, as Stein won again. The next year at
Kharkiv (URS-ch35), the format was a
Swiss system, and Vasiukov was just above the middle of the pack, as Tal and Polugaevsky won. At
Alma Ata 1968 (URS-ch36) he scored 10½/19, good for a tied 6-10th spot, as Polugaevsky tied with
Alexander Zaitsev. At Moscow 1969 (URS-ch37), also a Zonal, he managed just 9½/22 for 15th place; the winners were Polugaevsky and
Tigran Petrosian. At
Baku 1972 (URS-ch40), he did well with 11½/21 for a tied 6-7th finish; the winner was Tal. At
Leningrad 1974 (URS-ch42), he ended with 7/15 for a tied 12–13th place; the winners were Tal and
Alexander Beliavsky. In the 1975
Vilnius Zonal, he scored 7½/15 for tenth place, as the winners were
Boris Gulko,
Vladimir Savon,
Yuri Balashov, and
Vitaly Tseshkovsky. Finally at
Vilnius 1980–81 (URS-ch49), he placed tied 11-12th with 8½/17, as the winners were Beliavsky and
Lev Psakhis. Since Vasiukov never placed near the top in Soviet Zonal competition, he was unable to earn an opportunity to play in an
Interzonal tournament. == Tournament victories in five decades ==