Board Position
A startling King's Side Defence (perfected by Alekhine, a former world champion) where Black uses his knight as a target to lure White's pawns forward so that they become objects of attack. Board Position
Black replies Kt-KB3 to White's P-K4 (move 1wb, left) to tempt White into a Four Pawns Attack (move 5w) against combined knights on the queen's side (move 6b, right). White can vary the attack by Sämisch or Exchange lines, or the Modern Variation.
The defence is normally slightly favourable to White who has an imposing centre, but Black exerts great pressure on it (such that opportunities to castle for example do not occur early). Immediate alternatives to the main line include the Scandinavian and Maroczy variations.
Begin or Clear or Groups or see move: 1 e4 Nf6 2 e5 Nd5 to:

either: 3 c4 Nb6 4 d4 d6 to (4Pawns): 5 f4 dxe5 6 fxe5 Nc6 7 Be3 Bf5 8 Nc3 e6 9 Nf3 Nb4 10 Rc1 c5
3 d4 d6 4 c4 Nb6 (Exch.V): 5 exd6 exd6 6 Nc3 Nc6 7 Be3 Be7 8 Bd3 0-0