Ruy Lopez: Classical Variation, Zukertort Gambit
The Zukertort Gambit comes from the Berlin after 4.O-O Bc5 5.c3, where White leaves e4 hanging to build a center with d4. Black can take with ...Nxe4 and accept a sharp fight, or castle and keep the bishop on b6 for a classical game.
- Moves
- 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.c3
- ECO
- C65
- Engine
- +0.40 · a slight edge for White (Stockfish 17.1, depth 20)
- Played
- 1,002 games in our lichess sample
- White scores
- 58.9%
Key ideas for both sides
White
- Answer ...O-O with d4, then Bg5 to pin the f6 knight, as in the main engine line.
- If Black grabs e4, play Qe2 to hit the knight and open the e-file against the black king.
- Use a4 against a bishop on b6 to gain queenside space and trap ideas.
Black
- Castle and play ...Bb6, keeping the bishop safe from d4 and aimed at f2.
- Taking with ...Nxe4 is risky: after Qe2, Black's king sits on an open e-file.
- Use ...d6 and ...a5 to hold e5 and stop White's a4 and a5 expansion on the queenside.
Plans and pawn structure
If Black castles, White plays d4 and Bg5, and the center becomes tense with pawns on d4 and e4 against e5. Black holds with ...d6 and ...a5, then looks for ...Bg4 or ...h6. If Black takes on e4, the game becomes sharp: Qe2 pins along the e-file, and Black needs ...d5 to protect the knight while White plays c4 to break. White's lead in development often matters more than the pawn.
Where the engine's main line heads: Central tension: d4 and e4 against e5. Central tension: d4 and e4 against e5. One capture changes the character of the game.
What the engine plays from here
Stockfish 17.1 at depth 20 rates the position +0.40: a slight edge for White. Its three top choices for Black:
- +0.40 5...O-O 6.d4 Bb6 7.Bg5 d6 8.a4
- +0.47 5...Bb6 6.a4 O-O 7.Bxc6 bxc6 8.a5
- +0.73 5...Nxe4 6.Qe2 Bxf2+ 7.Kh1 d5 8.c4
Pawns, from White's side.
How it scores on lichess
1,002 rated lichess games reached this position; White scored 58.9%.
Light: White wins. Grey: draws. Dark: Black wins. About the sample.
Where it goes next
- Classical Variation, Modern Main Line5...O-O · rare
How to play against it
As Black, castle and play ...Bb6 instead of grabbing e4. The pawn grab gives White a dangerous attack after Qe2, with your king stuck on the e-file and ...Bxf2 only creating more open lines. As White, push d4 quickly and use Bg5 and a4 to keep the initiative.
Questions
What are the moves of the Ruy Lopez: Classical Variation, Zukertort Gambit?
The Ruy Lopez: Classical Variation, Zukertort Gambit starts 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.c3. Its ECO code is C65.
Is the Ruy Lopez: Classical Variation, Zukertort Gambit good for White?
Stockfish 17.1 rates the position +0.40 at depth 20, which is a slight edge for White. In 1,002 lichess games from our sample, White scored 58.9%. A practical choice for White club players; Black needs to resist the pawn grab and play precise classical moves.
What is the main idea of the Ruy Lopez: Classical Variation, Zukertort Gambit?
White plays c3 and d4, offering the e4 pawn. Black should castle and play ...Bb6 rather than take, since White gets strong compensation after Qe2.
What should Black play next?
The engine's first choice is O-O, with Bb6 and Nxe4 close behind. 5...O-O castles and keeps the position solid, answering d4 with ...Bb6.
Related lines
Updated October 2026. Sources and method.