Open Catalan
Catalan Opening · E05 · you play White. 1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7 5.Nf3 O-O
About the Open Catalan
The Open Catalan, 6...dxc4, gives White the choice of winning the pawn back at once with Qc2 and Qxc4. Black plays ...a6 and ...b5 to gain time, and White uses the g2 bishop and the queenside pressure that make the Catalan feared. Kramnik and Carlsen are its best-known exponents.
1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 Be7: that is the start of the Open Catalan, a E05 line of the Catalan Opening for White. There are 3 lines of this opening to train. Go through the Open Catalan one move at a time, and when you know it, try to play the whole line without help. Below the board you find middlegame plans for the Open Catalan, common endgames and games by strong players, so you know what to do once the theory ends. Train it regularly as part of your set of lines to play with White: the speed mode and drill show quickly which moves you still forget.