ECO D15 · Slav Defense
Slav Defense: Two Knights Attack
The position after 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4.
1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4
Slav Defense: Two Knights Attack is filed under ECO D15, a variation of Slav Defense. It is the position after 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 — 8 half-moves in, with White to move. From here theory names 3 continuations: a4, e3, e4.