← Slav Defense

Practice: Slav with ...Bf5 (4.e3)

Quick development of the bishop

A straightforward developing line. White delays playing Nc3 to avoid the dxc4 lines, and Black immediately posts the bishop on f5 — the classic Slav manoeuvre.

1. d4 d5
2. c4 c6
3. Nf3 Nf6
4. e3 Bf5
5. Nc3 e6
6. Be2 Nbd7
7. O-O Bd6
♟

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Key strategic ideas

  • The key advantage of the Slav over the QGD is that Black develops the light-squared bishop outside the pawn chain (Bf5 or Bg4) before playing ...e6.
  • Black aims to control the centre from the side, often targeting White's pawn structure on c4 and the d4-e4 centre.
  • The Slav can lead to many different structures, from open tactical battles to closed manoeuvring positions.

Common mistakes & traps

  • In the Classical Slav (4.Nc3 dxc4 5.a4), Black should not try to hold the pawn with ...b5 — White plays a5 and the b-pawn becomes a fatal weakness.
  • The so-called "Slav Trap" (1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.O-O Nbd7??) allows 9.Ng5! with a crushing attack on f7.

Pawn structure notes

The Slav typically features a d5 pawn supported by c6, against White's pawns on d4 and c4. White often aims for e3-e4 expansion. In the Exchange Slav (cxd5), the structure is symmetrical with active piece play.

Tips

  • 4.e3 is a quieter approach — White avoids the theory of the Classical Slav
  • Black's Bf5 is the hallmark of the Slav — the bishop is active before ...e6 closes the position
  • Both sides complete development before the middlegame battle begins

About this line

This line is rated beginner. Practice it repeatedly until you can play the entire sequence without thinking. The in-app trainer tracks your perfect streaks and celebrates milestones.