Slav Defense · if they play 3.cxd5
D10 · Slav Defense: Exchange Variation · you play Black
This is the branch for when your opponent leaves the Slav Defense main line with 3.cxd5.
The idea
In the Exchange Slav copy White: knights out, bishop to f5, and the position stays level.
The moves
1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. Bf4 Nc6 6. e3 Bf5
Free, no sign-up. The board plays the other side and you play every one of your moves. A line you miss comes back tomorrow; one you get comes back after 3 days, then a week, then three weeks.
Opening names from the Lichess chess-openings list (CC0). Every line was checked move by move by the rules engine. Part of Chess Path, a free chess course.