[March 10, 2018] Updated Opening Line by Borki Predojević:
Catalan Defense, Open Defense with 5… Bb4+

[Line 240 : 1. d4 Nf6 2. c4 e6 3. Nf3 d5 4. g3 dxc4 5. Bg2 Bb4+]

Line 240 deals with one of the critical variations of the Open Defense (4… dxc4) of the Catalan. By giving a check, Black wants to disturb White’s development. White’s usual choice is 6. Bd2, and now 6… a5 is considered to be the best option for Black.

If White continues with 7. O-O O-O 8. Bg5, Black could play 8… Nc6 and meet White’s a2-a3 with Bd6 and e6-e5.

If White decides to attack the c4-pawn immediately with 7. Qc2, Black should try to protect the pawn as long as possible, i.e. 7… Bxd2+ 8. Nbxd2 b5 9. a4 c6, or 8. Qxd2 c6 9. a4 Ne4 10. Qc2 Nd6. White has full compensation for the pawn, but probably not much more than that.

[Diagram: Black to Move] Black Rook on d3 is under attack and he can not move it because his Knight is hanging. However, White’s pieces lack coordination and Black has the means to launch a strong attack. What should he do?

Click here to see the line in our viewer…

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