Scandinavian Defense · if they play 3.Nf3
B01 · Scandinavian Defense: Mieses-Kotroc Variation · you play Black
This is the branch for when your opponent leaves the Scandinavian Defense main line with 3.Nf3.
The idea
When Nf3 comes first, pin it with Bg4, add Nc6 and castle long to pile on d4.
The moves
1. e4 d5 2. exd5 Qxd5 3. Nf3 Bg4 4. Be2 Nc6 5. d4 O-O-O
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.