The Reliable Petroff

Minimum: Dual Core, 2 GB RAM, Windows 7 or 8.1, DirectX11, graphics card with 256 MB RAM, DVD-ROM drive, Windows Media Player 9, ChessBase 14/Fritz 16 or included Reader and internet access for program activation. Recommended: PC Intel i5 (Quadcore), 4 GB RAM, Windows 10, DirectX11, graphics card with 512 MB RAM or more, 100% DirectX10-compatible sound card, Windows Media Player 11, DVD-ROM drive and internet access for program activation.

Petroff Defence

After 2.Nf3 Black is in no way obliged to defend his e-pawn. Instead, he can play 2...Nf6 and start a counter-attack against White’s e-pawn. In the 19th century the Russian players Alexander Petroff (1794–1867) and Carl Friedrich Jänisch (1813–1872) made important contributions to the development of the variation, which has therefore become known as the Petroff Defence (or the Russian Defence).

In the second half of the 20th century after a long period of neglect, it developed in the 1980s into one of the most reliable ways for Black to achieve a draw at the top level. Worldclass players such as Karpov, Yusupov, Gelfand, Kramnik and Anand adopted it as part of their repertoire and the question as to how White could manage to reach an advantage against the Petroff became an even more ticklish one.