Openinge

Queen's Gambit Declined: Semi-Tarrasch, Main Line, Exchange Variation

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c5 5.cxd5 Nxd5 6.e4 Nxc3 7.bxc3
Top-Spelers