Semi-Slav Defense: Meran Variation, Stahlberg Variation

The Semi-Slav Defense: Meran Variation, Stahlberg Variation is a chess opening classified under ECO code D49 in the Closed & Semi-Closed Games family, arising from 1.d4 d5, including the Queen's Gambit, Slav Defense, and related systems. It is reached after 13 moves: 1. d4 d5 2. c4 c6 3. Nc3 Nf6 4. e3 e6 5. Nf3 Nbd7 6. Bd3 dxc4 7. Bxc4 b5 8. Bd3 a6 9. e4 c5 10. e5 cxd4 11. Nxb5 Nxe5 12. Nxe5 axb5 13. Qf3. The resulting position leaves black to move.