Chess opening · ECO A40
Zaire Defense
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1. d4 Nc6 2. d5 Nb8 3. e4 Nf6 4. e5 Ng8
Zaire Defense is catalogued under ECO code A40. It is reached after 4 moves (8 half-moves): 1. d4 Nc6 2. d5 Nb8 3. e4 Nf6 4. e5 Ng8. After the last move it is White to play. White opens 1. d4. It is the defining line of the Zaire Defense family, which has 1 catalogued line in total.