Fianchetto Variation, Yugoslav System

The Yugoslav System, classified under ECO E64, differs from the Classical and Panno approaches. Black does not build up with ...Nbd7 or ...Nc6. Instead, 6...c5 hits White's d4-pawn at once, borrowing the Benoni idea of pressure from the flank. The bishop on g7 and the half-open lines toward the queenside then become Black's main assets. Because Black's pieces are not yet committed, White has to choose how to treat the tension, and engines give White only a slight edge.

By far the most common reply is 7. Nc3, which keeps the central tension and leads to the Yugoslav Variation proper. Advancing with 7. d5 gains space and fixes a Benoni-type structure, in which Black counts on queenside play against the c4-pawn and pressure along the long diagonal. In online games Black has scored better than White after this advance. The less ambitious 7. dxc5 clears the center and opens the position, aiming for a small, lasting plus rather than a sharp fight. Overall results at this point are close to even, with White slightly ahead.