In chess after the Sicilian Defense one of the most well-known defenses is the Petrov Defense (or Petroff Defense) also called Russian Defense. This defense of the black pieces is used by both beginners and international grandmasters and has been seen numerous times in the finals of the world chess championship in all its modalities classic rapid and blitz.

The initial position of the Petrov Defense is 1.e4 e5 2.Nf3 Nf6 and can be used to surprise our opponent of white pieces that wants to enter the Spanish Opening or Ruy Lopez the Italian Opening or the Scottish Opening. We can use the Petrov Defense if our adversary of white pieces dominates the 3 previous openings and we want to surprise him and ruin his online chess study hours with those openings.

The Petrov Defense is a very solid and rocky defense and is one of the most effective defenses when it comes to achieving equality. Once your basic concepts are known to learn all its possibilities it is best to study real games of international grandmasters and chess world champions as is the case with this free chess app in which you can follow and study official tournaments games in PGN format of the best chess players in the world.

In addition to games with the classic variation of the Petrov Defense (C42) the modern attack variation (C43) and the symmetrical variation or Four Knights Game (C49) are included.