Overview
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Exchange Slav
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a6 (Chebanenko) Slav
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Slav Declined
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Slav Gambit
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Alapin Variation (main line)
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Czech Variation
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Steiner Variation
The Slav can be entered by many move orders. The possibilities include 1.d4 d5 2.Nf3 Nf6 3.c4 c6, 1.Nf3 d5 2.c4 c6 3.d4 Nf6, and so on. From the standard Slav position (1.d4 d5 2.c4 c6), the most important continuations are
- 3.Nc3 e5 (Winawer Countergambit)
- 3.Nc3 e6 (Semi-Slav Defense)
- 3.cxd5 cxd5 (Slav Exchange Variation)
- 3.Nf3 e6 (Semi-Slav Defense)
- 3.Nf3 Nf6 4.Nc3 (main line)
- 4...a6 (Chebanenko Slav)
- 4...dxc4 (Slav Accepted)
- 5.a4 (Alapin Variation)
- 5...Na6 (Smyslov Variation)
- 5...e6 (Soultanbéieff Variation)
- 5...Bf5 (Czech Variation)
- 6.e3 (Dutch Variation)
- 6.Ne5 (Krause Attack)
- 6.Nh4
- 5...Bg4 (Steiner Variation)
- 5.e3 (Alekhine Variation)
- 5.e4 (Slav Gambit)
- 4...e6 (Semi-Slav Defense)
- 4...g6 (Schlechter Variation)
- 3.Nf3 Nf6 4.e3 (Slav Declined)
Black can also transpose into the Semi-Slav Defense by playing ...e6 on either the third or fourth move. The Semi-Slav Defense, a kind of a combination Queen's Gambit Declined and Slav Defense, is a very complex opening in its own right. See Semi-Slav Defense for details.
After 3.Nc3, the pressure on Black's center prevents 3...Bf5?, since after 4.cxd5 cxd5 5.Qb3 White wins a pawn. Another Black try that doesn't work is 3...Nf6 4.e3 Bf5 5.cxd5 cxd5 6.Qb3 Bc8 and now f4 and Nf3 followed by Ne5 gives White a big advantage. Black can try the Winawer Countergambit, 3.Nc3 e5, which was introduced in Marshall–Winawer, Monte Carlo 1901, but usually Black transposes into the Semi-Slav with either 3...e6 or 3...Nf6 4.Nf3 e6.