Chess Openings Lab
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Sicilian Defense: Moscow Variation

The Moscow Variation is 2.Nf3 d6 3.Bb5+, checking the king before White commits to d4. White aims for quick development and an easy game, while Black chooses between ...Bd7 for simplicity, ...Nd7 for tension, or ...Nc6 for a Rossolimo-style setup.

Moves
1.e4 c5 2.Nf3 d6 3.Bb5+
ECO
B51
Engine
+0.04 · level (Stockfish 17.1, depth 20)
Played
4,236 games in our lichess sample
White scores
50.4%

Key ideas for both sides

White

  • After ...Bd7, trade with Bxd7+ and castle quickly, then build a center with c3 and d4.
  • Against ...Nd7, castle and retreat Bd3 if attacked, then play c3 and a4 to fix the queenside.
  • Against ...Nc6, Ba4 and c3 prepare d4 with a solid center.
  • Use Re1 and c3 to support e4 and d4, keeping central control.

Black

  • 3...Bd7 is solid: after Bxd7+ Qxd7, the queen supports ...Nc6 and ...e6.
  • 3...Nd7 keeps the bishops; after ...a6 and ...g6, Black gets a fianchetto setup.
  • 3...Nc6 leads to positions like the Rossolimo, with ...Bd7 and ...a6 next.
  • Develop with ...Nf6 and ...e6 to keep the center firm.

Plans and pawn structure

After the check, White usually trades bishops and builds a classical center with c3 and d4. Black responds with ...Nf6, ...e6 and ...Be7, keeping a compact structure. White's plans include d4 for central space and Re1 support, while Black looks for ...d5 or ...b5 breaks. With fewer pieces, the game is calmer than an Open Sicilian, but both sides still need clear plans.

What the engine plays from here

Stockfish 17.1 at depth 20 rates the position +0.04: level. Its three top choices for Black:

  1. +0.04 3...Bd7 4.Bxd7+ Qxd7 5.O-O Nf6 6.Re1
  2. +0.12 3...Nd7 4.O-O a6 5.Bd3 g6 6.c3
  3. +0.27 3...Nc6 4.O-O Bd7 5.c3 a6 6.Ba4

Pawns, from White's side.

How it scores on lichess

4,236 rated lichess games reached this position; White scored 50.4%.

under 120044.0%
1200–159948.4%
1600–199948.7%
2000 and up53.4%

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

Where it goes next

  • Moscow Variation, Main Line3...Bd7 · 2,328 games
  • Moscow Variation, Haag Gambit3...Bd7 · rare
  • Moscow Variation, Moscow Gambit3...Nc6 · rare

How to play against it

As Black, play 3...Bd7 and recapture with the queen, then develop with ...Nc6 and ...Nf6. Avoid weakening moves like ...b5 too early. If you want more tension, try 3...Nd7 and fianchetto.

Questions

What are the moves of the Sicilian Defense: Moscow Variation?

The Sicilian Defense: Moscow Variation starts 1.e4 c5 2.Nf3 d6 3.Bb5+. Its ECO code is B51.

Is the Sicilian Defense: Moscow Variation good for White?

Stockfish 17.1 rates the position +0.04 at depth 20, which is level. In 4,236 lichess games from our sample, White scored 50.4%. A practical choice for White players who want a calm, sound game, while Black can equalize with simple development.

What is the main idea of the Sicilian Defense: Moscow Variation?

White checks on b5 to simplify and develop quickly, avoiding heavy Open Sicilian theory. Black blocks with ...Bd7, ...Nd7 or ...Nc6 and aims for solid central play.

What should Black play next?

The engine's first choice is Bd7, with Nd7 and Nc6 close behind. 3...Bd7 blocks the check and offers a bishop trade that eases Black's development.

Updated October 2026. Sources and method.