Trap in Budapest Gambit Opening #1

Jul 7, 2009, 6:11 PM |

I am studying Budapest Gambit opening for black. Recently I have encountered a line where white played 3. d5 instead of the main line 3. dxe5. Play usually proceeds as follows: 3. ...Bc5 4. Nf3 d6.

In one of my recent games my opponent played 5. Bg5?. Can you see why this was an opening trap blunder?