1.c4 e6 Keep in mind the transpositions into our lines. For more options on handling these systems check out Openings Oddities 2.Nc3 d5 3.d4 a6 This is an important move as we do not want to allow the Exchange Variation from the Queen's Gambit Declined proper. 4.Nf3 Nf6 1.Nf3 d5 2.c4 e6 3.d4 Nf6 4.g3 Keep in mind our transpositions into the Catalan as well.