Sicilian Defence, Chekhover Variation to: Evgeni Vasiukov vs Loek van Wely, 2002 Mikhail Tal vs Robert Eugene Byrne, 1976 Sicilian Defence, Chekhover Variation The Sicilian Defence, Chekhover Variation (also sometimes called the Szily Variation or Hungarian Variation) is a chess opening named after Vitaly Chekhover, from the game Chekhover–Lisitsin, Leningrad 1938. It is defined by the moves: On move four White ignores the standard opening principle to not develop the queen too early in the game. Although the Chekhover Variation is somewhat rare at grandmaster level, it is not uncommon among amateurs. The "Encyclopaedia of Chess Openings" (ECO) assigns code B53 to this opening.
Salo Flohr players ever, and proved virtually invincible at the Olympiads of the 1930s. His tournament record was impressive, with his tactical skill and excellent endgame technique securing him many famous victories. FIDE awarded him the International Grandmaster title on its inaugural list in 1950. He made a number of important contributions to opening theory: a 'Flohr variation' can be found in no fewer than six major openings, including the Caro–Kann Defence, the Ruy Lopez, the English Opening, and the Grünfeld Defence. The Flohr–Zaitsev Variation of the Closed Ruy Lopez (1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.0-0 Be7 6.Re1 b5