ECO code: B03
Opening Name: Alekhine Defense, 4.c4 Nb6
Moves: 1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. c4 Nb6
Description: In this line of the Alekhine Defense, White aggressively challenges Black's knight on d5 with the move 4.c4, gaining spatial control in the center and on the queenside. Black responds by retreating the knight to b6, a characteristic maneuver aimed at maintaining pressure on the central squares while avoiding exchanges. This knight placement also prepares Black to counterattack White's extended pawn center later in the game.
Characteristic of 4...Nb6: The retreat to b6 is a strategic repositioning that supports Black's plan to undermine White's strong center from the flanks rather than direct confrontation. It keeps the knight active and flexible for future counterplay.
Attacking or Defensive: As White, the move 4.c4 is an attacking move, aiming to expand in the center and restrict Black's knight. For Black, the retreat 4...Nb6 is more defensive in nature, focusing on solidifying position and preparing counterattacks against White's advanced pawns.
Center Control: This opening line is very much about control of the center. White aggressively occupies and challenges the center with pawns on e5, d4, and c4, while Black adopts a hypermodern strategy of attacking the center from the sides rather than occupying it directly.
This opening is defined by the position shown on the board below. The moves displayed are a typical sequence that leads to it, but different sequences can reach the same position and still carry the same opening name.
Practice puzzles and train your tactics with real positions from games that used the Alekhine: 4.c4 Nb6, and sharpen your opening mastery.
Puzzle 1 of 24 - Move #6 black