According to Botvinnik and official sources he died in a Nazi air raid on Lake Ladoga on a ship during the siege of Leningrad, but it is believed by some that he fell victim to the Great Purge along with the majority of the Old Guard of revolutionists.
He also won at Karlsruhe 1911, Kitzingen 1913 (triangular), and Heidelberg 1913 (followed by Solomon Rosenthal, Dietrich Duhm, etc.), and tied for 4-5th with Alexander Ilyin-Genevsky at Montreux 1914 (SUI-ch, D. Duhm and Moriz Henneberger won), and took 4th at Baden-Baden 1921 (the 3rd Badischen Kongress, quadrangular, D. Duhm won).
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