Slav Defense: Quiet Variation, Pin Defense
The Pin Defense of the Quiet Slav is 4...Bg4, pinning the f3 knight to the queen before Black plays ...e6. White can hit b7 with 5.Qb3 or ask the bishop with h3, while Black aims to trade on f3 and set up with ...e6 and ...Bb4 or ...Bd6.
- Moves
- 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bg4
- ECO
- D11
- Engine
- +0.29 · level (Stockfish 17.1, depth 20)
- Played
- 1,204 games in our lichess sample
- White scores
- 48.1%
Key ideas for both sides
White
- 5.Qb3 attacks b7 at once; after 5...Qb6 6.Ne5 the knight escapes the pin with tempo on the g4 bishop.
- h3 asks the bishop to decide; after ...Bxf3 Qxf3, White has the bishop pair.
- Nc3, Bd3 and O-O form a solid setup aiming for e4 later.
- If Black trades on f3, the queen on f3 eyes d5 and the long light diagonal.
Black
- Meet Qb3 with ...Qb6, offering a queen trade that removes the pressure on b7.
- After h3, take on f3 and build with ...e6, ...Bb4 or ...Bd6 and castling.
- ...Nbd7 and ...e6 make a compact setup, with ...e5 as the later break.
- Never leave b7 hanging; Qb3 is White's main try against this bishop move.
Plans and pawn structure
Black gives up the bishop pair for easy development and a solid center. White's long-term plan is to open the position for the bishops, using e4 or c5. Black aims for ...e6, ...Nbd7, ...Bd6 and ...e5 or ...c5 to free the game. In the Qb3 line, an early queen trade on b3 leads to a quiet ending where White's half-open a-file and the e5 knight balance Black's sound pawns.
What the engine plays from here
Stockfish 17.1 at depth 20 rates the position +0.29: level. Its three top choices for White:
- +0.29 5.Qb3 Qb6 6.Ne5 Bf5 7.cxd5 Qxb3
- +0.28 5.h3 Bxf3 6.Qxf3 e6 7.Nc3 Bb4
- +0.27 5.Nc3 e6 6.h3 Bxf3 7.Qxf3 Bb4
Pawns, from White's side.
How it scores on lichess
1,204 rated lichess games reached this position; White scored 48.1%.
Light: White wins. Grey: draws. Dark: Black wins. About the sample.
How to play against it
As White, use 5.Qb3 to hit b7, or play h3 and take the bishop pair. Do not leave the f3 knight pinned while Black piles up on d4. After the bishop trade, open the position slowly so your two bishops come alive.
Questions
What are the moves of the Slav Defense: Quiet Variation, Pin Defense?
The Slav Defense: Quiet Variation, Pin Defense starts 1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bg4. Its ECO code is D11.
Is the Slav Defense: Quiet Variation, Pin Defense good for Black?
Stockfish 17.1 rates the position +0.29 at depth 20, which is level. In 1,204 lichess games from our sample, White scored 48.1%. A solid choice for Black players who don't mind giving up the bishop pair; White needs patience to make it count.
What is the main idea of the Slav Defense: Quiet Variation, Pin Defense?
Black develops the bishop to g4 before closing the pawn chain. White answers with Qb3 against b7 or h3 to grab the bishop pair.
What should White play next?
The engine's first choice is Qb3, with h3 and Nc3 close behind. 5.Qb3 hits b7 and forces Black to react before finishing development.
Related lines
Updated October 2026. Sources and method.