Lea Nudelman participated in the Soviet Union youth chess championship, where achieved the best result in 1972 in Chernihiv, when taken the 7th place.

[1] She played for Ukraine in the Championship of the USSR team juniors and twice won - in 1970 in Nevinnomyssk[2] and in 1972 in Kiev.

[3] In 1971 Lea Nudelman won the Crimean Oblast Women's Chess Championship.

She also is Ukrainian women's correspondence chess championship winner (1968-1970).

Participating in multiple Israeli women's chess championships.