Semi-Meran Variation

The Semi-Meran Variation is the position after 5. e3 Nbd7 6. Bd3 dxc4 7. Bxc4, when Black has released the central tension. The capture costs Black the d5 point, and White keeps pawns on d4 and e3 against a lone e6 pawn. In return, White's bishop has used two moves to reach c4, where it can be harassed. The c- and d-files are half-open, and White's natural plan remains preparing e3-e4. The engine considers the position roughly balanced, and decisive results on Lichess split almost evenly.

The position works mainly as a junction. Black nearly always continues 7...b5, gaining queenside space with tempo on the bishop and entering the Meran Variation proper, with its Classical and Modern branches after 8. Bd3. Alternatives are uncommon. 7...Bd6 develops the bishop before any queenside expansion, and 7...Nb6 drives the bishop off c4 but takes the knight away from supporting ...c5 or ...e5. White has scored noticeably better against both of these sidelines.