Opening guide

Scandinavian Mainline: Nf3 – How to Play as Black

ECO B01 2,417,876 games Stockfish +0.64

After 1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.Nf3 Nf6, you've reached the Scandinavian Mainline with Nf3. This is a well-known tabiya where your queen has dodged to the edge of the board and your knights are ready to develop. The engine evaluates the position at +0.64, a small edge for White, meaning you are slightly worse according to the computer — but in practice, the statistics tell a more encouraging story: across nearly two and a half million games, Black actually scores 50.6% wins. Yes, you read that right. Despite Stockfish's favour, real players win more often as Black here. The drill below will show you exactly how to navigate this sharp, fight-for-every-square opening.

On this page
  1. Practice against the engine
  2. The Big Picture: What You're Fighting For
  3. The Engine's Favourite: d4 and the Main Line
  4. What the Statistics Reveal: White's Most Popular Choices
  5. Common Mistakes and How to Punish Them
  6. Real-game results
  7. FAQ
  8. More Scandinavian lines

Play the Scandinavian Mainline: Nf3 against the engine

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The Big Picture: What You're Fighting For

Your queen on a5 is oddly placed but very safe — it can't easily be chased by light pieces. White's main task is to seize the centre with d4 and develop with tempo. Your job is to get your light-squared bishop out quickly (typically to f5 or g4), castle, and create threats against White's centre. The engine gives +0.64, a small plus for White, so you are slightly worse by pure numbers — but the human results prove this is a fighting line where Black scores above 50%. White has more space, but you have active piece play and no obvious weaknesses. The key is to avoid passive moves; your queen on a5 will later reroute to a more central square or find a role on the queenside.

The Engine's Favourite: d4 and the Main Line

When you face a strong opponent, you'll most often see d4 — the engine's best move and the most popular reply by a wide margin (753,356 games). After d4, Stockfish continues with Bf5 Bd2 c6. Let's unpack that: you develop your bishop to f5, White plays Bd2 to threaten the queen or prepare Bb4, and you answer with c6 to solidify your centre and give the queen a retreat square on c7 if needed. This setup is solid and active — your pieces are well-coordinated, and you haven't committed to any risky pawn breaks early. From here, both sides have flexible plans: you can aim for e6, Be7, 0-0, and later consider moves like Rd8 or Ne4. The position remains tense but manageable.

Common Mistakes and How to Punish Them

Because White is the one trying to prove an advantage, they often overreach. The most common mistakes involve premature attacks: - Bc4 looks aggressive, aiming at f7, but it leaves the bishop exposed to ...Bg4 (pinning the knight on f3) or ...c6 followed by ...b5, winning a tempo. Black scores over 55% against this move for a reason. - Bb5+ is a common beginner try, but after ...c6 the bishop has to retreat or be captured. Black's centre is solid and you gain time. - Bd3 is passive and actually scores worst for White (42.2%). After ...Bf5 you can trade bishops on d3, easing your defence. Whenever White plays a developing move that doesn't control the centre, your plan is simple: develop your pieces to natural squares (Bf5, e6, Be7, 0-0), and don't rush to move your queen again. Let White prove they have compensation for the pawn they sacrificed.

Results across 2,417,876 Lichess games

45.6%
3.9%
50.6%
White 45.6% Draw 3.9% Black 50.6%
Most-played continuationGamesWhite wins
1 d4Main line 753,356
47.0%
2 Bc4 569,014
44.7%
3 d3 365,919
45.4%
4 Be2 252,868
45.3%
5 Bb5+ 124,724
43.2%
6 Bd3 104,833
42.2%

Frequently asked questions

Is the Scandinavian with 4.Nf3 a good opening for Black at club level?

Yes, it is excellent. Despite Stockfish giving +0.64 (a slight edge for White), in practice Black scores 50.6% wins across over two million games. That means you win more often than White at the board, making it a very practical choice for club players who want active piece play without massive theoretical memorisation.

What is White's best move after 4...Nf6 in the Scandinavian?

Stockfish's top choice is d4, continuing with the plan d4 Bf5 Bd2 c6. This is also the most popular move in the database, appearing in over 750,000 games. The main idea is to claim the centre and prepare to develop the c1-bishop with tempo against your queen on a5.

How should Black respond to Bc4 in the Scandinavian Nf3 line?

Bc4 is a common club-level move (569,000 games) where White attacks f7 early. Black scores 55.3% against it. Your best reply is to develop normally — play Bf5 or Bg4, and after c6 you can sometimes gain time with b5. The bishop on c4 can become a target rather than a threat.

Why does Black win more games than White in this position despite the engine evaluation?

The +0.64 evaluation reflects perfect play, but humans make mistakes. White's position requires precise handling to convert the small advantage, while Black's setup is simpler to play: develop naturally, keep the queen safe, and wait for White to overpress. The statistics show that White's edge is hard to maintain in practice.