Chess Opening Theory/1. e4/1...Nf6/2. e5/2...Nd5/3. d4/3...d6/4. c4/4...Nb6/5. f4/5...dxe5

= Alekhine's Defence = Black begins his strike against the center with this move.

Theory table
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'1.e4 Nf6 2.e5 Nd5 3.d4 d6 4. c4 Nb6 5. f4 dxe5'