The USSR Chess Championship was played from 1920 to 1991. Organized by the USSR Chess Federation, it was the strongest national chess championship ever held, with eight world chess champions and four
The participants of the fourth USSR Chess Championship in 1925. Sitting (left to right): Vilner, Levenfish, Rokhlin (organizer), Gotthilf, I. Rabinovich, Bogoljubow (winner), Ilyin-Genevsky, Duz-Khotimirsky, Romanovsky, Sergeyev, Nenarokov, Verlinsky, A. Rabinovich. Standing (left to right): von Freymann, Sozin, Eremeev (organizer), Grigoriev, Zubarev, Selezniev, Kaspersky, Kutuzov, Weinstein (organizer).