Chess Openings Lab
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Slav Defense: Chebanenko Variation

The Chebanenko Variation is 4.Nc3 a6, a waiting move that prepares ...b5 and keeps the c8 bishop's options open. White can grab space with c5, stop ...b5 with a4, or fianchetto with g3, while Black aims for ...b5, ...dxc4 or a timely ...e5.

Moves
1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 a6
ECO
D15
Engine
+0.27 · level (Stockfish 17.1, depth 20)
Played
688 games in our lichess sample
White scores
50.7%

Key ideas for both sides

White

  • 5.g3 and Bg2 put the bishop on the long diagonal, adding pressure to d5 and the queenside.
  • a4 stops ...b5 for good, as in 5.a4 e6 6.Bg5, at the cost of a hole on b4.
  • c5 locks the queenside and takes b6 from Black, though ...e5 then hits the center.
  • e3 and Bd3 make a solid setup, keeping the c4 pawn protected and aiming for e4.

Black

  • ...b5 is the main idea, gaining space and pressuring the c4 pawn.
  • ...dxc4 followed by ...b5 grabs a pawn and keeps it if White is slow.
  • ...Bf5 or ...Bg4 develops the light-squared bishop before ...e6 shuts it in behind the pawns.
  • After c5, answer with ...Nbd7 and ...e5, striking the center White has stopped guarding.

Plans and pawn structure

Black's ...a6 is flexible: it prepares ...b5, which can hit c4 or support a pawn on c4 after ...dxc4. White settles the pawn structure with c5, a4 or a quieter setup. If White locks with c5, Black's break is ...e5, and the center opens on Black's terms. If White fianchettoes, the engine line 5.g3 e6 6.Bg2 dxc4 7.a4 c5 leads to an early queen trade on d1.

What the engine plays from here

Stockfish 17.1 at depth 20 rates the position +0.27: level. Its three top choices for White:

  1. +0.27 5.g3 e6 6.Bg2 dxc4 7.a4 c5
  2. +0.26 5.a4 e6 6.Bg5 Be7 7.a5 Nbd7
  3. +0.24 5.c5 Nbd7 6.Qc2 e5 7.dxe5 Ng4

Pawns, from White's side.

How it scores on lichess

688 rated lichess games reached this position; White scored 50.7%.

1600–199953.5%
2000 and up49.1%

Light: White wins. Grey: draws. Dark: Black wins. About the sample.

Where it goes next

  • Chebanenko Variation, Advance System5.c5 · rare

How to play against it

As White, decide the queenside early with a4 or c5, and do not allow ...b5 to come with tempo on c4. Develop fast and keep e4 in mind as your central break. Against ...e5 ideas, keep the d4 pawn well protected.

Other lines with this name

The lichess opening list also files this line under the same name, though it reaches a different position: 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 a6 5.e3 Bf5.

Questions

What are the moves of the Slav Defense: Chebanenko Variation?

The Slav Defense: Chebanenko Variation starts 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 a6. Its ECO code is D15.

Is the Slav Defense: Chebanenko Variation good for Black?

Stockfish 17.1 rates the position +0.27 at depth 20, which is level. In 688 lichess games from our sample, White scored 50.7%. A flexible choice for Black players who like maneuvering and waiting moves; White needs a clear plan to use the extra space.

What is the main idea of the Slav Defense: Chebanenko Variation?

Black plays ...a6 to prepare ...b5 while keeping the light-squared bishop flexible. White decides between locking with c5, stopping ...b5 with a4, or a fianchetto with g3.

What should White play next?

The engine's first choice is g3, with a4 and c5 close behind. 5.g3 prepares Bg2, so the bishop adds pressure to d5 and the long diagonal.

Updated October 2026. Sources and method.