Petrov's Defense: Classical Attack, Krause Variation
1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Nc6 7.O-O Be7 8.Re1 Bg4 9.c3 f5 10.c4
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The Petrov's Defense: Classical Attack, Krause Variation is a chess opening classified under ECO code C42 (Open games). It is a variation of the Petrov's Defense family. Step through the moves on the board above, then play the line yourself or review it with the built-in engine.