Opening guide

Zukertort Opening: Old Indian Attack: Bf5 — A Small Edge for White

ECO A06 2,278 games Stockfish +0.34

After 1.Nf3 d5 2.d3 Bf5, White can strike immediately with 3.c4. You're not playing a flashy gambit — this is a calm, principled opening that keeps the game under your control. The engine gives +0.34, a small but real edge for your side. Across 2,278 games White scores a healthy 49.5%, with only 46.7% going to Black. The position is still early, but you already have a clear direction: attack Black's centre while staying solid. Let's see how to handle Black's most popular replies.

On this page
  1. Practice against the engine
  2. What White Is Fighting For
  3. The Engine's Best Move: dxc4
  4. What the Statistics Reveal
  5. Punishing Black's Mistakes
  6. Real-game results
  7. FAQ
  8. More Zukertort lines

Play the Zukertort Opening: Old Indian Attack: Bf5 against the engine

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Ready to try this position yourself? Play the interactive drill below — face Black's best replies and practise turning that +0.34 edge into a full point. No flU

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What White Is Fighting For

The move 3.c4 directly challenges Black's pawn on d5. If Black captures with dxc4, you recapture with dxc4 and open the centre on your terms — the engine's preferred continuation goes 3.c4 dxc4 4.e4 Bg4 5.d4. That gives you a strong pawn duo in the centre and a space advantage. If Black doesn't capture, you can push cxd5 later, leaving White with a semi-open c-file and a slight lead in development. Your bishop on f1 has clear prospects, and your knight on f3 is well placed. The key idea is simple: don't let Black keep that d5 pawn unchallenged.

The Engine's Best Move: dxc4

Stockfish's top choice for Black is 3...dxc4, played in 732 games. After 4.e4 Black's bishop must move, and the engine suggests 4...Bg4. Then 5.d4 leaves you with a classic centre: pawns on e4 and d4, a knight on f3, and options to develop quickly with Be3 and Nc3 (or c3 if you prefer). White's score after 3...dxc4 is only 47.8%, but that's partly because it's Black's best try — the engine still says +0.34 is in your favour. Trust the evaluation: you have a slight pull in a position that is easy to play for a club player, while Black has to be accurate.

What the Statistics Reveal

Black's most popular reply is 3...e6, with 778 games. White scores 49.2% here — solid, but Black equalises more easily than after other moves. The real opportunities come against Black's less accurate tries: - 3...c6 (211 games): White scores 55.9%. This is a big number. Black's pawn on c6 doesn't help contest the centre, and the engine calls it an inaccuracy (loses ~0.5 pawns). - 3...Nf6 (236 games): White scores 52.1%. Despite being the third most common reply, the engine flags it as an inaccuracy (loses ~0.6 pawns). - 3...Nc6 (107 games): White scores 51.4%, but this is actually a mistake that loses ~2.5 pawns. The best move was 3...d4, but that's rarely played (139 games) and gives Black a poor 42.4% score — so you're doing well if Black pushes the d-pawn. In short, if Black doesn't play 3...dxc4 or 3...e6, you're already getting the upper hand.

Punishing Black's Mistakes

If Black plays 3...Nc6, you have a big advantage to press. The engine says Black should have played d4 instead — that move loses ~2.5 pawns. Your plan? Continue developing naturally, aiming to open the centre. After 3...Nf6 or 3...c6, the advantage is smaller but still real. Against 3...c6, for instance, you have a 55.9% winning chance. In all these cases, the engine wants you to stay consistent: capture on d5 when it helps you, build your centre, and don't rush. The +0.34 edge is yours to keep as long as you play principled chess.

Results across 2,278 Lichess games

49.5%
3.8%
46.7%
White 49.5% Draw 3.8% Black 46.7%
Most-played continuationGamesWhite wins
1 e6Main line 778
49.2%
2 dxc4 732
47.8%
3 Nf6 236
52.1%
4 c6 211
55.9%
5 d4 139
42.4%
6 Nc6 107
51.4%

Frequently asked questions

Is the Zukertort Opening: Old Indian Attack: Bf5 a good opening for beginners?

Yes. The positions are straightforward after 3.c4, and you avoid heavy opening theory. White gets a small edge (+0.34) without risky tactics, making it a great choice for club players who want a solid game.

What should White do after 3...e6 in the Zukertort Opening?

3...e6 is Black's most common reply (778 games). White scores 49.2% here. Keep building your centre — options like Nc3 or g3 are natural. Black's pawn on e6 can become a target if you open the position later with e4 or cxd5.

Why is 3...dxc4 Black's best move in this line?

The engine prefers 3...dxc4 (+0.34 for White) because it releases tension and lets Black develop. Even so, after 4.e4 Bg4 5.d4 you have a strong centre and an easy game. White's score after 3...dxc4 is 47.8%, which is lower than against other moves — proof it's Black's best try.

What is the biggest mistake Black can make in this position?

Playing 3...Nc6 is the worst common mistake, losing ~2.5 pawns according to the engine. White scores 51.4% after it, but the evaluation says you're much better. Exploit it by opening the centre and developing quickly.