Åbninger

Petrov's Defense: Classical Attack, Marshall Variation, Staunton Variation

1.e4 e5 2.Nf3 Nf6 3.Nxe5 d6 4.Nf3 Nxe4 5.d4 d5 6.Bd3 Bd6 7.O-O O-O 8.c4 c6 9.Qc2
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