Slav Defence

For Black · ECO D10-D19 · 27 moves (plies) in the main line

The Slav Defence (1.d4 d5 2.c4 c6) enters a sharp pawn-grabbing struggle after Black takes on c4 and White raids the queenside, leading to material imbalance and active-piece play.

Themes: queenside-tension, pawn-grab, rook-activity, material-imbalance, tactical-defense

Key ideas

  • Black supports d5 with the c-pawn while keeping the c8 bishop active on f5.
  • After 4...dxc4, Black invites White to spend time recovering or attacking the extra pawn.
  • The rook lift beginning with 11...Rb8 creates tactical pressure against White's queen and queenside pawns.
  • The sequence through 13...Qxb6 trades Black's rook for White's queen, leaving a material deficit but active pieces.

Plans for Black

  • Use 5...Bf5 and 7...Bb4 to develop with tempo and increase pressure on White's queenside.
  • Play 9...a5 to restrict queenside expansion and establish a base for rook activity.
  • Following 14.Bb5, coordinate the queen, bishop, and knights to challenge White's undeveloped queenside pieces.

Plans for White

  • White uses 5.a4 to limit Black's queenside space before completing kingside development.
  • The bishop recaptures actively with 7.Bxc4, restoring material while developing toward the center.
  • White's queen raid from 11.Qxb7 to 13.Qxb6 wins material but draws the queen deep into Black's camp.
  • After 14.Bb5, White develops with pressure on Black's queenside and aims to consolidate the extra material.

Mistakes to avoid

  • Taking on c4 without a timely plan for development can leave Black defending the pawn with uncoordinated pieces.
  • Allowing the queen raid beginning with 11.Qxb7 without activating the rook concedes material too easily.
  • Starting the rook chase too late after White's queen reaches b7 loses the tactical point of 11...Rb8.
  • After the queen exchange on 13...Qxb6, treating the position as equal ignores White's substantial material advantage.

Target ratings

At 1600–1800 blitz, 0% of opponents go wrong; the final engine evaluation is +2.8 pawns.

  • 1600–1800 blitz: +1.3 points above the other moves, over 15,301,404 games

Explored with: Lichess games at 1600–1800 blitz; practical search (aggressive risk); engine depth 16; 12 moves explored; from 1.d4 d5 2.c4; as Black.

The main line

1.d4 d5 2.c4 c6 3.Nc3 Nf6 4.Nf3 dxc4 5.a4 Bf5 6.e3 e6 7.Bxc4 Bb4 8.O-O Nbd7 9.Qb3 a5 10.Na2 Be7 11.Qxb7 Rb8 12.Qxc6 Rb6 13.Qxb6 Qxb6 14.Bb5

Study and practice it

Play through the Slav Defence move by move in Quick Review, or explore its branches in Deep Dive, right on this page. Sign up to add it to your repertoire and practice it with spaced repetition in Opening Lab.