Atklātnes

Queen's Gambit Declined: Cambridge Springs, Bogoljubov Variation

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.Nd2 Bb4 8.Qc2 O-O 9.Be2
Labākie šahisti