411 REFERENCE · Wikibooks
Chess Opening Theory/1. d4/1...d5/2. Bg5/2...e6
Reference material by Wikibooks contributors. This retains its source identity and is not 411 news reporting.
2...e6??
This move is a blunder as it loses the queen with 3. Bxd8. This move is a bit popular because some players do not notice the pin, and lose on the spot.
1. d4 d5 2. Bg5 e6??