The Svesnikov defense is one of the most aggresive, the principal combination is: 1.e4 c5 2.Nf3 Nc6. 3.d4 cxd4. but this opening has been developed and now the opening spirit is based in the control of the box ''d4'. This defense is played by real tactical players because Black can surprise with a move in any moment, and if Black get the control of ''d4'' the game is practically finished. Here you are some examples of this defense. I hope you like it!!