Slav Defense
D18 · Slav Defense: Czech Variation, Classical System · you play Black
The idea
Hold d5 with c6 so your light bishop can come out to f5 before you play e6.
The moves
1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4
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.
When they go another way
- If they play 3.cxd5: In the Exchange Slav copy White: knights out, bishop to f5, and the position stays level.
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.