Heinz Liebert eighteen times participated in East Germany Chess Championships, where he won 4 medals: 2 silver (1964, 1970) and 2 bronze (1971, 1977).

In 1966 Heinz Liebert shared second place with Levente Lengyel in Rubinstein Memorial behind only former World Champion Vasily Smyslov.

[1] In 1966, he was awarded the FIDE International Master (IM) title.

Heinz Liebert played for East Germany in the Chess Olympiads:[2] Heinz Liebert played for East Germany in the European Team Chess Championship:[3] Heinz Liebert played for East Germany in the World Student Team Chess Championships:[4] Heinz Liebert was mathematician by education.

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