1. d4 Nf6 2. c4 e5!?
I always use this opening against d4. It is like opening up with 1..e5 for me. The main idea is "surprise". I just love all the variations of it. Like here is a trap in it. If I said anything wrong, please tell me so I can fix it. Click on move list for the first one.
Against good players though they probably won't fall for it, but here is a main line.
Here are some possible moves if white doesn't take the pawn.
If ever 3. Nc3 just push the pawn to cramp him. A lot of times he may just play this:
No credit should go towards me, if people didn't put videos of this opening it wouldn't be possible. Also, thanks go towards the authors of the book about this.