1.b4 e5 2.Lb2 Lb4 3.Le5 Sf6 4.c4 O-O
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1.b4 e5 2.Lb2 Lb4 3.Le5 Sf6 4.c4 O-O
*1.b4 e5 2.Lb2 Lb4 3.Le5 Sf6 4.c4 O-O 5.e3 (ECO A00/19) *1.b4 e5 2.Lb2 Lb4 3.Le5 Sf6 4.c4 O-O 5.Sf3 (ECO A00/20)