He started his studies at Imperial University of Warsaw (with a Russian language) in 1879, and moved to ETH Zurich (Eidgenössische Technische Hochschule Zürich) in 1884.
In 1883/84, he took second place, behind Józef Żabiński, in the Warsaw City Chess Championship, scoring 19/22.
[1] In Switzerland, Poplawski twice shared first place with Max Pestalozzi in the Swiss Chess Championship, at Zürich in 1889 and at Winterthur in 1890.
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