ECO E06 · Catalan Opening
Catalan Opening: Closed
The position after 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3.
1. d4 Nf6 2. c4 e6 3. g3 d5 4. Bg2 Be7 5. Nf3
Catalan Opening: Closed is filed under ECO E06, a variation of Catalan Opening. It is the position after 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 — 9 half-moves in, with Black to move. Named theory ends here; beyond this the position is yours to work out.