411 REFERENCE · Wikibooks
Chess Opening Theory/1. e4/1...e6/2. d4/2...d5/3. Nd2/3...dxe4
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
Tarrasch variation French defence → Tarrasch variation C03
3...dxe4
Black trades pawns on e4, a sideline offering to transpose into the Rubinstein Variation.
/4. Nxe4/ is almost always played. White recaptures the pawn and transposes to the line which would normally be reached with 3. Nc3 dxe4 4. Nxe4.
Theory table
4. Nxe4 Rubinstein variation(by transposition)
References