Queen's Gambit Declined: Baltic Defense, Pseudo-Slav

The Queen's Gambit Declined: Baltic Defense, Pseudo-Slav is a chess opening classified under ECO code D02 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 4 moves: 1. d4 d5 2. Nf3 Bf5 3. c4 e6 4. Nc3 c6. The resulting position leaves white to move.