Berlin Defence (chess)

The Berlin Defence, also called the Berlin Wall, is a chess opening that begins with the moves: 1. * e4 e5 2. * Nf3 Nc6 3. * Bb5 Nf6 The opening is a variation of the Ruy Lopez and is assigned codes C65-C67 in the Encyclopaedia of Chess Openings. The code C65 covers White moves other than 4.0-0, such as 4.d3 (4.Nc3 is considered a variation of the Four Knights Game). The code C66 covers the variation 4.0-0 d6, and the code C67 covers the variation 4.0-0 Nxe4 (usually regarded as the main line of the Berlin Defence).

Berlin Defence (chess)

The Berlin Defence, also called the Berlin Wall, is a chess opening that begins with the moves: 1. * e4 e5 2. * Nf3 Nc6 3. * Bb5 Nf6 The opening is a variation of the Ruy Lopez and is assigned codes C65-C67 in the Encyclopaedia of Chess Openings. The code C65 covers White moves other than 4.0-0, such as 4.d3 (4.Nc3 is considered a variation of the Four Knights Game). The code C66 covers the variation 4.0-0 d6, and the code C67 covers the variation 4.0-0 Nxe4 (usually regarded as the main line of the Berlin Defence).