Chess opening · ECO C21
Center Game: Kieseritzky Variation
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1. e4 e5 2. d4 exd4 3. Nf3
Center Game: Kieseritzky Variation is catalogued under ECO code C21. It is reached after 3 moves (5 half-moves): 1. e4 e5 2. d4 exd4 3. Nf3. After the last move it is Black to play. White opens 1. e4. It is a named variation of the Center Game, which has 18 catalogued lines in total.