Sicilian Defense, Chekhover Variation

The Chekhover Variation begins 1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Qxd4. The family called the Open Sicilian appears when White plays d4 and Black's c-pawn captures there. The usual recapture on d4 is made by the knight; here the queen recaptures, so the b1-knight and c-pawn retain more options.

The sequence is written in algebraic notation: squares such as e4 combine a column letter and row number; N means knight, B bishop, R rook, and Q queen; pawn moves normally show their destination, x marks a capture, and + marks check. Moves are read in pairs, White first and Black second; dots before a move shown alone indicate Black's turn.

Bringing the queen out early allows 4...Nc6: Black's knight leaves its starting square and attacks the queen, so Black gains a useful move. White often answers 5.Bb5, pinning that knight to the king, because moving it would expose the king to attack and be illegal, or preparing an exchange after ...Bd7. The Bxc6 exchange may remove an active piece and steer the game away from heavily studied main branches, reducing the number of variations White needs to memorize.

The Chekhover often produces simpler pawn arrangements than some main Sicilians, but it does not guarantee a quiet game. White's queen can remain a target, and Black keeps central pawn breaks, pawn advances that attack or open the center, as well as pressure on the c-file, the vertical line of c-squares. White must bring the remaining pieces out without spending unnecessary moves on the queen.

The idea does not completely reject the rule against bringing the queen out early. That rule warns that an exposed queen may be forced to move repeatedly; here White accepts that cost to recapture with a different piece and direct the opening toward specific positions. The Levenfish Variation uses the normal Nxd4 recapture and creates a much more direct struggle with f4.