Nimzo-Indian Defense: Normal Variation

A solid and flexible chess opening for Black, focusing on quick development and control of central squares while potentially doubling White's pawns.

The opening is a popular choice among players of all levels, as it offers a good balance between solidity and counterplay. Black aims to control the central squares, particularly d5, by putting pressure on White's pawn on c4. The key move in this opening is Black's Bb4, pinning White's knight on c3 and potentially doubling White's pawns if the bishop is captured.

White's main response is to play e3, supporting the d4 pawn and preparing to develop the light-squared bishop. Black often follows up with O-O, completing kingside development and preparing for potential pawn breaks in the center. White has several options at this point, including advancing the pawn to d5, playing Nf3, or developing the light-squared bishop to d3 or e2.

The opening can lead to various pawn structures, depending on how both players choose to proceed. One common theme is the potential for doubled c-pawns for White, which can be both a strength and a weakness. Black can exploit this by targeting the pawns, while White can use the open b-file for rook activity.

Overall, the opening is a flexible and solid choice for Black, offering chances for counterplay and a variety of middlegame plans. It has been played by many top players, including former World Champions Anatoly Karpov and Garry Kasparov, and remains a popular choice at all levels of play.