Chess Opening Theory/1. d4/1...d5/2. c4/2...c6/3. Nc3/3...dxc4/4. e3/4...b5/5. a4

Slav Defence rd nd bd qd kd bd nd rd pd pd pd pd pd pd pd pl pd pl nl pl pl pl pl pl rl bl ql kl bl nl rl 5.a4 This move tries to attack Black's queenside and lure it to it's doom. b4 is almost universally played after this, as if Qa5, the queen is exposed. b4 tries to boot the knight into oblivion and disrupt White's queenside. Theory table