Chess Opening Theory/1. d4/1...Nf6/2. c4/2...e6/3. Nc3/3...Bb4/4. a3/4...Bxc3
Position in Forsyth-Edwards Notation (FEN)
|Moves: 1. d4 Nf6 2. c4 e6 3. Nc3 Bb4 4. a3 Bxc3|
Nimzo-Indian Defence, Sämisch VariationEdit
Black takes the knight with 4...Bxc3+. White must recapture with 5. bxc3. White will have the bishop-pair and a large center, but Black will have counterplay against the weak c4-pawn.