Semi-Slav Defense: Meran Variation, Wade Variation, Kaidanov Gambit

The Semi-Slav Defense: Meran Variation, Wade Variation, Kaidanov Gambit is a chess opening classified under ECO code D47 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 Bb7 9. e4 b4 10. Na4 c5 11. e5 Nd5 12. O-O cxd4 13. Nxd4. The resulting position leaves black to move.