Semi-Slav Defense: Botvinnik Variation, Alatortsev System

The Semi-Slav Defense: Botvinnik Variation, Alatortsev System is a chess opening classified under ECO code D44 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 9 moves: 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. Nc3 c6 5. Bg5 dxc4 6. e4 b5 7. e5 h6 8. Bh4 g5 9. Nxg5 Nd5. The resulting position leaves white to move.