Semi-Slav Defense · D45

Stoltz Variation, after 2. Nf3, through 7. b3

1. d4 d5 2. Nf3 Nf6 3. c4 c6 4. e3 e6 5. Nc3 Nbd7 6. Qc2 Bd6 7. b3

...e6 plus ...c6 holds d5 twice and threatens to take on c4 and keep it with ...b5 - solid structure with real sharpness underneath.

The first 4 moves, explained

• 1. d4 Stakes a claim in the centre, controlling e5, and frees the bishop and queen.
• 1... d5 Stakes a claim in the centre, controlling e4, and frees the bishop and queen.
• 2. Nf3 Develops the knight to f3, eyeing d4 and e5. It also props up the d4 pawn. Theory calls this the Zukertort Variation.
• 2... Nf6 Develops the knight to f6, eyeing d5 and e4. It also props up the d5 pawn. Theory calls this the Symmetrical Variation.

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