Openings

The Ruy Lopez: ideas, plans and main variations

Updated Jul 27, 2026 · 5 min read

The Ruy Lopez explained properly: what 3.Bb5 actually does, the Morphy Defence, the Exchange Variation, the Berlin, and the white plan c3, d4, Nbd2, Nf1, Ng3.

The Ruy Lopez, also called the Spanish Game, begins with 1.e4 e5 2.Nf3 Nc6 3.Bb5. The bishop is not aiming at f7 the way it does in the Italian: it attacks the knight on c6, the piece defending e5. That difference shapes the whole opening. White is not building a threat for next move, White is installing pressure that lasts thirty moves.

The opening moves:

1. e4 e5 2. Nf3 Nc6 3. Bb5

The starting position of the Ruy Lopez. The bishop on b5 attacks the knight on c6, and that knight is what defends e5.

What 3.Bb5 actually threatens

Almost every beginner concludes that White threatens 4.Bxc6 followed by 5.Nxe5, winning the center pawn. The conclusion is wrong, and understanding why is where the Ruy Lopez really starts.

The threat that is not there:

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. Nxe5 Qd4 6. Nf3 Qxe4+ 7. Qe2 Qxe2+ 8. Kxe2

The saving move is 5...Qd4: the queen hits the knight on e5 and the pawn on e4 at once, and White cannot hold both. After 6.Nf3 Qxe4+ 7.Qe2 Qxe2+ 8.Kxe2 Black has the pawn back and a balanced queenless position, with the bishop pair paying for the doubled c-pawns. Capturing on c6 at move 4 does not win material.

3...a6: the Morphy Defence

The most popular reply in the world is 3...a6, the Morphy Defence. Black asks the bishop a question before committing anything else: trade on c6, or retreat? Almost everyone retreats with 4.Ba4, keeping the pressure along the a4-e8 diagonal.

The Morphy Defence and the main retreat:

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4

It costs a tempo and looks modest, but ...a6 buys Black four concrete things:

The resource ...b5 now exists forever: whenever the bishop becomes annoying, it gets pushed back to b3, away from the knight.
It opens the Noah's Ark trap: after 4.Ba4 d6 5.d4 b5 6.Bb3 Nxd4 7.Nxd4 exd4 8.Qxd4 c5, the b3 bishop gets trapped by the pawns on a6, b5 and c4.
It forces White to decide right away: trade on c6 and hand over the bishop pair for good, or retreat.
It buys Black time to pick a setup already knowing where the white bishop will end up.

The Exchange Variation: 4.Bxc6

With 4.Bxc6 the subject of the game changes. Black recaptures with 4...dxc6, not with the b-pawn, because that opens the d-file, frees the c8 bishop and holds the center better. White gives up the bishop pair for a purely structural argument that only shows up after the trade in the center.

The point of the Exchange Variation:

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Bxc6 dxc6 5. O-O f6 6. d4 exd4 7. Nxd4

On the kingside White has four pawns (e, f, g, h) against three, a healthy majority that can produce a passed pawn. On the queenside Black has four against three, but two are doubled on the c-file, and a doubled majority cannot make a passer on its own. If every piece comes off the board, White wins that race. Black gets the bishop pair in return, so the Exchange suits players who enjoy endgames.

The Berlin Defence: 3...Nf6

Black can also attack e4 at once with 3...Nf6, the Berlin Defence, which came back to the top of modern chess on solidity alone. The line that made it famous is 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+ Kxd8: the queens leave on move eight and the black king loses the right to castle.

It looks disastrous and it is not. The king steps to e8 and often walks on to c8 once the bishop vacates it, the bishop pair is worth a lot on an open board, and with the queens gone there is no mating attack to fear. Notice the structure: it is the one from the Exchange Variation, a healthy white kingside majority against a black queenside majority doubled on the c-file.

The Closed main line and the white plan

The Closed main line is the heart of the Ruy Lopez. Both sides develop everything and castle, and only then does the argument about the center begin.

The base position of the Closed Ruy Lopez:

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 d6 8. c3 O-O 9. h3

Look at what White has not done: the pawn is still on d2. c3 develops nothing, it prepares d4 with support and vacates c2 as a retreat for the bishop. h3 looks tiny and is decisive: it rules out ...Bg4, which would pin the f3 knight against the queen, and that knight is the piece covering e5 and supporting the d4 break. From there the plan runs in a fixed order:

c3, supporting the coming d4 and opening c2 for the bishop.
h3, taking ...Bg4 off the table.
d4, only now, with the king safe and the center supported.
Nbd2, because c3 is taken by the pawn, so the b1 knight develops through d2 instead.
Nf1 and Ng3, the classic maneuver: the knight walks across the board to g3, where it eyes f5 and h5.

The maneuver completed: knight on g3, bishop back on c2, pawn on d4. A typical Breyer position, where Black rerouted the knight from c6 through b8 to d7.

Black does not sit and watch. The three classic treatments are ...Na5 and ...c5, hitting the center from the queenside (the Chigorin); ...Nb8 and ...Nbd7, two tempi to give the knight a better square without blocking the b7 bishop (the Breyer, above); and the Marshall Attack, with ...d5 on move eight, giving up a pawn for lasting initiative against the white king.

What to take into your own games

The working core of the Ruy Lopez fits into five sentences.

As White, do not hunt for tactics early: play c3, h3, d4 and the Nbd2-f1-g3 maneuver, understanding each move.
Do not play Bxc6 just because Black attacked the bishop: retreating to a4 and then b3 keeps a useful piece and the bishop pair.
As Black, decide early between the Berlin (solid and technical) and the Morphy with ...a6 and ...b5 (more space, more play).
If your plan depends on d4, do not let the f3 knight get pinned by ...Bg4 before you have played h3.
Learn the structure before the variations: doubled c-pawns against a healthy kingside majority is the same theme in the Exchange and in the Berlin.