
Let me show you a trick
Last couple of months or so I've been regularly employing, almost every game with black that is, the Scandinavian defence against 1.e4 . I've been contemplating if it is a good idea to show my secret tactic in one particular line for quite some time now. Sure, I don't want people to come prepared to my games and since my audience is enourmous I will probably have to abandon all hopes to ever win by my faboulous little trick, but then again, people deserve to get familiar with it.
I would not exaggerate if I said that I won at least 10 times with this trick.
The trick takes place in a well-known gambit, the Icelandic-Palme gambit that is. A side line of the Scandinavian, which starts like this:
After this quite common position I tend to lose the majority of my games after white plays d4 here (edit: after cca. 4 months the statistics already turned into my favour, though the d4 line is still the most precise and annoying to play against), but may that not distract you from our main goal. Our goal is to catch someone into my little trap. In order to get people play the setup we desire we will unfortunately also have to play a lot more games where white goes d4. After that happens don't lose hope! Just play quickly and hope you can win on time. Also a good advice might always be - make a mess and have fun.
Edit number 2:
After actually checking the line with a computer and checking how some masters played this line it seems that d4 is an error. After d4 black has Bb4+ and if Nc3 black can go Ne4 with an anoying attack. After more tenacious Bd2(after d4 Bb4+) black goes Qe7! and more fun to play with the black pieces. It's complicated, not at all simple, but still it's good to know the line isn't working for white.
The cool thing about this setup is that black can more or less ignore what white is doing if of course white hadn't played d4. This is how I do it:
Here I always play Ng4. It is a completely useless, tempi-losing and ignorable move. White can play many moves that make 10. ...Ng4 look noobish. Here are some of them:
To some players apparently there is also one natural and good looking move. That is h3. Of course; after that, knight must just hop back and black achieved nothing. Oh, but did he really? Try find the trick yourselfs:
Here I also warn you that the trick of course doesn't work if the rook is not on f1. For example:

Cheers!