Players who enjoy this system often also study the French Defense and the Caro-Kann Defense to round out their repertoire.
The Strategic Idea
In the Open Ruy Lopez, Black plays 5…Nxe4 — taking the e4 pawn immediately after White castles. It’s aggressive and direct. Black wins a pawn right away. White’s response is just as direct: 6.d4.
After 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3, White has the e5 pawn and very active pieces. The e5 pawn is a spear aimed at Black’s position. Black’s knight on e4 looks good but it can be attacked. Both sides are fighting hard from move 6.
The key position after 9.c3
After 9.c3, White is ready to play Qd3 to pressure the Ne4 and the d5 pawn. Black’s knight is active on e4 but has nowhere safe to go.
With 10.Qd3, White attacks the knight on e4. Black must choose: defend the knight, move it, or sacrifice it. Every option gives White something to work with.
Who Plays the Ruy Lopez Open Variation?
Ruy López de Segura, the 16th-century Spanish priest, first analyzed this system, giving it his name.
Garry Kasparov used the Ruy Lopez as his main weapon throughout his career, particularly in World Championship matches against Karpov.
Magnus Carlsen regularly employs the Ruy Lopez and its various sublines, valuing its long-term strategic complexity.
The Ruy Lopez Open Variation has been the cornerstone of 1.e4 e5 theory for over 150 years. Every world champion has had an opinion on this system — most have used it at the board.
Main Variations
The Open Ruy Lopez creates sharp, complex positions. Black has several tries and White must know all of them:
Main Line — 9.c3 Bc5 10.Qd3
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Bc5 10.Qd3
White plays Qd3 to pressure d5 and keep the Ne4 under fire. Black must defend the knight and stop the e5 pawn from advancing. White has full compensation for the pawn.
9.c3 Be7 — Solid Black
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Be7 10.Re1 O-O 11.Nd4
Black develops quietly with Be7 and castles. White plays Re1 and Nd4 to pressure d5 and e6. White's e5 pawn is a long-term strength — Black must neutralize it.
Dilworth Attack — 9.c3 Nxf2
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.c3 Nxf2
The wild Dilworth counter-sacrifice. Black gives back the piece on f2 for a raging attack. White must know the refutation — 10.Rxf2 Bc5 11.Nd4 — or face a devastating assault.
7...Be6 — Avoiding the Main Line
1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 Be6 8.Qe2 Nc5 9.Rd1
If Black avoids ...d5 and plays ...Be6 instead, White responds with Qe2 and Rd1. Black's knight comes to c5 but is unstable. White keeps the initiative and plays for a long-term advantage.
Common Mistakes & Traps
Mistake 1 — Playing Re1 instead of d4 on move 6
After 5…Nxe4, White plays 6.Re1 instead of 6.d4. The knight on e4 stays safe and Black consolidates.
Re1 doesn't attack anything. Black retreats the knight to c5 safely and has won a pawn for free. White has no compensation.
d4 is the only move that fights for compensation. It attacks Black's e5 pawn and makes Black's knight on e4 uncomfortable. This is the correct approach.
Mistake 2 — Retreating the Nf3 after Black’s knight sits on e4
After 6.d4 exd4, some White players try to recapture with 7.Nxd4. This doesn’t work well.
After ...c5, Black attacks the queen. White has to move it and has lost the initiative entirely. The knight exchange allowed Black to consolidate comfortably.
Don't recapture the d4 pawn immediately. Let Black take space and fight for the e5 pawn instead. White's compensation comes from the e5 pawn and active development.