After 3. Nc3 Black usually choses between Alatortsev Variation (3… Be7), classical Queen’s Gambit Declined with 3… Nf6 (Line 171), the so-called Triangle Setup 3… c6 (Line 067) or even 3… Bb4. There are also a few sidelines that are occasionally seen on grandmaster level: the solid 3… a6, risky Schara-Hennig Gambit (3… c5 4. cxd5 cxd4) or, a not very promising line for Black with 3… dxc4.
Against the Alatortsev Variation, apart from a transposition to Line 253 with 4. Nf3 Nf6, and the common 4. cxd5 exd5 5. Bf4, White can also opt for immediate 4. Bf4, followed by 4… Nf6 5. e3 O-O 6. a3, with the idea Nb5.
The most frequent choice after 3… Be7 4. cxd5 exd5 5. Bf4 is 5… c6, covered in our Line 062, but Black has another option – 5… Nf6. After 6. e3 Black again has two notable possibilities: 6… Bf5 and 6… O-O
[Diagram: White to Move] White pieces are aiming at Black King. What is the best way for White to proceed with the attack?
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