Swedish Variation

The Swedish Variation, also called the Folkestone Variation, meets the Rubinstein System with 6...c4, sidestepping the isolated d-pawn in favor of a four-to-three queenside majority that Black expands with ...b5. White aims to break in the center, either at once with 7. e4, the Central Break, or after the usual 7. Bg2, which is far more common. The line is sharp, regarded as somewhat dubious, and rare in modern practice; the engine gives White a slight edge.