Ruy Lopez (Spanish Opening)

Strategic Summary & Main Idea

The Ruy Lopez (1.e4 e5 2.Nf3 Nc6 3.Bb5) has been the most common opening in top-level chess for a century and a half, and the reason is structural: the b5-bishop attacks the defender of the e5-pawn rather than the pawn itself. The position measures +0.22 after 3.Bb5, and the spread between Black's replies is wide for such a studied opening — the Berlin measures +0.20 and the Steinitz Defence +0.70.

The pawn structure this opening produces

The Ruy Lopez almost never resolves the central tension early, and that is what defines it: the pawns sit on e4 and e5 while the pieces manoeuvre, and the structure only settles after move ten. The two commonest structures are opposites. In the Closed Variation, White builds the c3-d4 chain against d6-e5 and walks the knight through d2-f1-g3, while Black takes queenside space with ...b5 and ...c5 — the slowest manoeuvring game in the classical repertoire. In the Exchange Variation, White trades on c6 on purpose: Black gets doubled pawns and the bishop pair, and the game becomes a race between White's kingside majority, which can produce a passed pawn in the endgame, and the activity of Black's two bishops in the middlegame. Knowing which of the two you prefer is more useful here than memorising lines. There is a third road, and it is the one that has grown most in the last two decades: with d3 instead of d4, White sets the tension aside and plays a pure piece game, walking the knight to g3 and the bishop back to c2 before committing a single pawn. It measures less (+0.18) and avoids the whole Marshall, which is theory enough for a book.

Main Variations of the Ruy Lopez (Spanish Opening)

Evaluations measured by us with Stockfish 19, depth 22, on 14 Sep 2026.

Frequently asked questions

Why does the Exchange Variation give no advantage?

Because the bishop pair compensates for the doubled pawns while pieces remain on the board. After 4.Bxc6 dxc6 the position measures +0.02 — practical equality. White's idea only pays in the endgame, where the four-against-three kingside majority can create a passed pawn and Black's doubled majority cannot.

Is the Berlin as dull as they say?

It is solid, and the evaluation explains the reputation: +0.20, the second lowest number on this page. Queens come off early, the endgame arrives by move 10, and Black plays with a doubled structure but no real weakness. Dull is a matter of taste; hard to beat is a measured fact.

Is the Ruy Lopez worth playing as a club player?

It is, for the opposite reason to the one usually given. Not the evaluation — +0.22 is less than the Italian yields — but the type of position: long manoeuvring, sustained tension and plans that recur. Learning the Ruy Lopez teaches you to play with small advantages, which is exactly what most club games lack.

Guides on this opening

• The Italian Game: plans, common mistakes and the modern Giuoco Pianissimo
• How to calculate candidate moves in chess: checks, captures and threats before you commit
• The Scotch Gambit: a complete guide to 4.Bc4, the open centre and the attack on f7
• An open games repertoire: meeting 1.e4 with 1...e5 without memorising Ruy Lopez theory
• The chess fortress: how to save endgames when you are material down
• The Berlin Defence: the wall, the endgame it forces and the anti-Berlins that give equality back
• Ruy Lopez with d3: a White repertoire against the Berlin and 3...a6

Common Mistakes & Where Most Amateurs Go Wrong

• 01 Black hunting the e4-pawn with ...Nxd4 and ...c5 in the Noah's Ark line: White's queen walks into a net and the b3-bishop is left without a square after ...c4. The line: 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.d4 b5 6.Bb3 Nxd4 7.Nxd4 exd4 8.Qxd4 c5 9.Qd5 Be6 10.Qc6+ Bd7 11.Qd5 c4 −4.66