ECO family guide

Ruy Lopez — all variations and ECO codes

235 named lines across 40 ECO codes (C60–C99). Source: the CC0-licensed lichess.org opening database.

The main line

How the main line scores at your rating

Real Lichess win rates for 1.e4 e5 2.Nf3 Nc6 3.Bb5, playing as white — the family's other variations are not separately tracked for win rate yet, main line only.

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All 235 named variations

Every named line in the Ruy Lopez family, from the CC0-licensed ECO classification — not separately tracked for win rate, but every ECO code and move sequence is real, sourced data.

• C60Ruy Lopez (main line) — 1.e4 e5 2.Nf3 Nc6 3.Bb5
• C60Alapin Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bb4
  • C60Alapin Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bb4 4.c3 Ba5 5.Bxc6 dxc6
• C60Brentano Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 g5
• C60Bulgarian Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a5
• C60Cozio Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7
  • C60Paulsen Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nge7 4.Nc3 g6
  • C60Tartakower Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 g6 4.d4 exd4 5.Nxd4 Bg7 6.Be3 Nge7 7.Nc3 O-O 8.Qd2 d5
• C60Fianchetto Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 g6
  • C60Kevitz Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 g6 4.c3 f5
• C60Lucena Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Be7
• C60Nürnberg Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 f6
• C60Pollock Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Na5
• C60Retreat Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nb8
• C60Rotary-Albany Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 b6
• C60Spanish Countergambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 d5

  • Harding Countergambit

    • C60Fricke Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 d5 4.Nxe5 Qg5 5.O-O
  • C60Harding Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 d5 4.Nxe5 Qg5 5.Nxc6
• C60Vinogradov Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Qe7
• C61Bird Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nd4
  • C61Paulsen Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nd4 4.Nxd4 exd4 5.O-O Ne7
• C62Steinitz Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 d6
  C62Steinitz Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4
  • C62Center Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4 exd4 5.O-O
  • C62Nimzowitsch Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4 Bd7 5.Nc3 Nf6 6.Bxc6
  • C62Semi-Duras Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4 Bd7 5.c4
• C63Schliemann Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5
  • C63Classical Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 fxe4 5.Nxe4 d5 6.Nxe5 dxe4 7.Nxc6 Qg5
  • C63Dyckhoff Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3
  • C63Exchange Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Bxc6
  • C63Jaenisch Gambit Accepted — 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.exf5
  • C63Kostić Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 fxe4 5.Nxe4 Be7
  • C63Möhring Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 fxe4 5.Nxe4 d5 6.Nxe5 dxe4 7.Nxc6 Qd5
  • C63Schönemann Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.d4
  • C63Tartakower Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 f5 4.Nc3 fxe4 5.Nxe4 Nf6

• Classical Defense

  • C64Benelux Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.c3 O-O 6.d4 Bb6
  • C64Boden Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 Qe7
  • C64Zaitsev Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.O-O Nd4 5.b4
• C64Classical Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5
  • C64Central Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3
  • C64Charousek Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 Bb6
  • C64Cordel Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 f5
  • C64Konikowski Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.c3 d5
  • C64Modern Main Line — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.c3 O-O 6.d4 Bb6 7.Bg5
  • C64Spanish Wing Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Bc5 4.b4
  • C65Zukertort Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5 5.c3
• C65Berlin Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6
  C65Berlin Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O
  • C65Anti-Berlin Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3
    • C65Anderssen Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.Bxc6+
    • C65Duras Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.c4
    • C65Kaufmann Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Bc5 5.Be3
    • C65Mortimer Trap — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Ne7 5.Nxe5 c6
    • C65Mortimer Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 Ne7
  • C65Beverwijk Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Bc5
  • C65Fishing Pole Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Ng4
  • C65Nyholm Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d4 exd4 5.O-O
  • C66Closed Bernstein Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 Be7 7.Bg5
  • C66Closed Showalter Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 Be7 7.Bxc6
  • C66Closed Wolf Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 exd4
  • C66Hedgehog Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Bd7 6.Nc3 Be7
  • C66Improved Steinitz Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6
  • C66Tarrasch Trap — 1.e4 e5 2.Nf3 Nc6 3.Bb5 d6 4.d4 Bd7 5.Nc3 Nf6 6.O-O Be7 7.Re1 O-O
  • C67Berlin Wall — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+ Kxd8 9.Nc3 Bd7
  • C67Cordel Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6 bxc6 8.dxe5 Nf5
  • C67Minckwitz Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.dxe5
  • C67Pillsbury Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6 bxc6 8.dxe5 Nb7 9.b3
  • C67Rio Gambit Accepted — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4
  • C67Rio de Janeiro Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7
    C67Rio de Janeiro Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6 bxc6 8.dxe5 Nb7 9.Nc3 O-O 10.Re1 Nc5 11.Nd4 Ne6 12.Be3 Nxd4 13.Bxd4 c5
  • C67Rosenthal Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 a6
  • C67Trifunovic Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 d5
  • C67Winawer Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6 bxc6 8.dxe5 Nb7 9.Nd4
  • C67Zukertort Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Be7 6.Qe2 Nd6 7.Bxc6 bxc6 8.dxe5 Nb7 9.c4
  • C67l'Hermet Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6
    • C67Berlin Wall Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Nf5 8.Qxd8+ Kxd8
    • C67Westerinen Line — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Bxc6 dxc6 7.dxe5 Ne4
• C65Halloween Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.Nxe5

• Closed Berlin Defense

  • C66Chigorin Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O d6 5.d4 Nd7

• Open Berlin Defense

  • C67Showalter Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.Ba4
  • C67l'Hermet Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.O-O Nxe4 5.d4 Nd6 6.dxe5
• C68Exchange Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6
  • C68Alekhine Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4 Bd6
  • C68Keres Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.Nc3
  • C68Lutikov Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 bxc6
  • C68Romanovsky Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.Nc3 f6 6.d3
  • C69Alapin Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Bg4 6.h3 h5
  • C69Bronstein Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Qd6
  • C69Gligoric Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O f6
  • C69King's Bishop Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Bd6
  • C69Normal Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O

• Exchange

  • C68Alekhine Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4 Bd7
• C70Bird's Defense Deferred — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nd4
• C70Morphy Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6
  C78Morphy Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O
  C78Morphy Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 d6
  • C70Alapin's Defense Deferred — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Bb4
  • C70Caro Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5
  • C70Classical Defense Deferred — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Bc5
  • C70Cozio Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nge7
  • C70Fianchetto Defense Deferred — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 g6
  • C70Graz Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Bc5
  • C70Norwegian Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Na5
    • C70Nightingale Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 Na5 6.Bxf7+
  • C70Schliemann Defense Deferred — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 f5
    • C70Jaenisch Gambit Deferred — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 f5 5.exf5
  • C71Modern Steinitz Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6
    C71Modern Steinitz Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Nc3
    C71Modern Steinitz Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c4
    C72Modern Steinitz Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O
    C73Modern Steinitz Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4
    C73Modern Steinitz Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4 f6
    C74Modern Steinitz Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3
    C74Modern Steinitz Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 f5 6.exf5 Bxf5 7.O-O
    C75Modern Steinitz Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7
    C75Modern Steinitz Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 Bd7 6.d4 Nge7
    • C74Siesta Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.c3 f5
    • C76Fianchetto Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 g6 4.c3 a6 5.Ba4 d6 6.d4 Bd7
  • C77Anderssen Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3
  • C77Bayreuth Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Bxc6
  • C77Duras Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3 d6 6.c4
  • C77Jaffe Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.c3
  • C77Mackenzie Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d4
  • C77Tarrasch Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Nc3
  • C77Wormald Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Qe2
  • C78Arkhangelsk Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Bb7
  • C78Møller Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Bc5
  • C78Neo-Arkhangelsk Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Bc5
  • C78Wing Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 Be7 7.a4
  • C79Steinitz Deferred — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6
    C79Steinitz Deferred — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6 6.Bxc6+ bxc6 7.d4 Nxe4
  • C80Tartakower Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.Qe2
• C71Noah's Ark Trap — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 b5 5.Bb3 d6 6.d4 Nxd4 7.Nxd4 exd4 8.Qxd4 c5
  C88Noah's Ark Trap — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.d4 Nxd4 9.Nxd4 exd4 10.Qxd4 c5
• C84Closed — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7
  C88Closed — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3
  C88Closed — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O
  C90Closed — 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
  C92Closed — 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
  • C72Kecskemet Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.O-O Bd7 6.c3 Nf6 7.d4 Be7 8.Nbd2 O-O 9.Re1 Be8
  • C84Basque Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d4 exd4 7.e5 Ne4 8.c3
  • C84Center Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d4
    • C84Basque Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d4 exd4 7.e5 Ne4 8.c3 dxc3
  • C84Martinez Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.d3
  • C84Morphy Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Nc3
  • C85Delayed Exchange — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Bxc6
  • C86Worrall Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2
    • C86Castling Line — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 b5 7.Bb3 O-O
      C86Castling Line — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Qe2 Be7 6.O-O b5 7.Bb3 O-O 8.c3 d5 9.d3
    • C86Delayed Castling Line — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Qe2 b5 7.Bb3 d6
  • C87Averbakh Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 d6
  • C88Alekhine Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 Na5 9.Bc2 c5 10.d4 Qc7 11.Nbd2 O-O 12.Nf1 Bg4 13.Ne3 Bxf3 14.Qxf3
  • C88Anti-Marshall — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.a4
  • C88Balla Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 Na5 9.Bc2 c5 10.d4 Qc7 11.a4
  • C88Leonhardt Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 Na5 9.Bc2 c5 10.d4 Qc7 11.h3 Nc6 12.d5 Nb8 13.Nbd2 g5
  • C88Rosen Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.d4
  • C88Trajkovic Counterattack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 Bb7
  • C90Lutikov Variation — 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.Bc2
  • C90Pilnik Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.d3 d6 9.c3
  • C90Suetin Variation — 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.a3
  • C91Bogoljubow Variation — 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.d4 Bg4
  • C91Yates Variation — 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.d4
    • C91Short Attack — 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.d4 Bg4 10.a4
  • C92Flohr System — 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 Bb7
  • C92Karpov Variation — 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 Nd7
  • C92Kholmov Variation — 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 Be6
  • C92Smyslov-Breyer-Zaitsev Hybrid — 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 Bb7 10.d4 Re8 11.Nbd2 Bf8 12.a3 h6
  • C92Zaitsev System — 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 Re8
  • C93Smyslov Defense — 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 h6
  • C94Breyer Defense — 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 Nb8
    C95Breyer Defense — 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 Nb8 10.d4 Nbd7 11.Nbd2 Bb7 12.Bc2 c5
    C95Breyer Defense — 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 Nb8 10.d4 Nbd7 11.Nh4
    • C94Quiet Variation — 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 Nb8 10.d3
    • C95Zaitsev Hybrid — 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 Nb8 10.d4 Nbd7
  • C95Breyer — 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 Nb8 10.d4
  • C96Borisenko Variation — 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 Na5 10.Bc2 c5 11.d4 Nc6
  • C96Chigorin Defense — 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 Na5 10.Bc2
    C96Chigorin Defense — 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 Na5 10.Bc2 c5
    C97Chigorin Defense — 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 Na5
    C97Chigorin Defense — 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 Na5 10.Bc2 c5 11.d4 Qc7
    C98Chigorin Defense — 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 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 Nc6
    C98Chigorin Defense — 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 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 Nc6 13.dxc5
    • C96Gajewski Gambit — 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 Na5 10.Bc2 d5
    • C99Panov System — 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 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 cxd4 13.cxd4
  • C96Keres Defense — 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 Na5 10.Bc2 c5 11.d4 Nd7
  • C96Rossolimo Defense — 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 Na5 10.Bc2 c6 11.d4 Qc7

  • Chigorin

    • C97Yugoslav System — 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 Na5 10.Bc2 c5 11.d4 Qc7 12.Nbd2 Bd7 13.Nf1 Rfe8 14.Ne3 g6

• Wormald Attack

  • C77Grünfeld Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.Qe2 b5 6.Bb3 Be7 7.d4 d6 8.c3 Bg4
• C78Brix Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O g6
• C78Central Countergambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d5
• C78Rabinovich Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5 6.Bb3 d6 7.Ng5 d5 8.exd5 Nd4 9.Re1 Bc5 10.Rxe5+ Kf8

• Steinitz Defense Deferred

  • C79Boleslavsky Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6 6.Bxc6+ bxc6 7.d4 Nxe4 8.Re1 f5 9.dxe5 d5 10.Nc3
  • C79Lipnitsky Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O d6 6.Bxc6+ bxc6 7.d4 Bg4
• C80Open — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4
  C80Open — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4
  C80Open — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3
  C80Open — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5
  C82Open — 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
  • C80Berger Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.a4 Nxd4 9.Nxd4 exd4 10.Nc3
  • C80Bernstein Variation — 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.Nbd2
    • C80Luther Line — 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.Nbd2 Bc5 10.Qe1
  • C80Friess Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Nxe5
  • C80Harksen Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.c4
  • C80Karpov Gambit — 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.Nbd2 Nc5 10.c3 d4 11.Ng5
  • C80Knorre Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.Nc3
  • C80Main Line — 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
  • C80Richter Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.d5
  • C80Riga Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 exd4
  • C80Schlechter Defense — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.a4 Nxd4
  • C80Skipworth Gambit — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.Re1 d5
  • C80Zukertort Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Ne7
  • C81Howell Attack — 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.Qe2
    C81Howell Attack — 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.Qe2 Be7 10.c4
    • C81Ekstrom Variation — 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.Qe2 Be7 10.Rd1 O-O 11.c4 bxc4 12.Bxc4 Qd7
  • C82Berlin Variation — 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 Nc5
  • C82Dilworth Variation — 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.Nbd2 O-O 11.Bc2 Nxf2
  • C82Italian Variation — 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
  • C82Motzko Attack — 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
    • C82Nenarokov Variation — 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 Ne7
  • C82St. Petersburg Variation — 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.Nbd2
  • C83Breslau Variation — 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 Nxe5
  • C83Classical Defense — 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
    C83Classical Defense — 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.Nbd2 Nc5 10.c3 Be7
    • C83Main Line — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 Be7 7.Re1 b5 8.Bb3 d5 9.dxe5 Be6 10.c3
  • C83Malkin Variation — 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.Nbd2 O-O 11.Qe2
  • C83Tarrasch Trap — 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 Qd7 12.Nxe6 fxe6 13.Rxe4
• C89Marshall Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5
  C89Marshall Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.a4 Bb7
  • C89Main Line — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.d4
    • C89Spassky Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.d4 Bd6 13.Re1 Qh4 14.g3 Qh3 15.Be3 Bg4 16.Qd3 Rae8 17.Nd2 Re6 18.a4 Qh5
  • C89Modern Main Line — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.d4 Bd6 13.Re1 Qh4 14.g3 Qh3
  • C89Modern Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6
  • C89Original Marshall Attack — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 Nf6
  • C89Re3 Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 Nxd5 10.Nxe5 Nxe5 11.Rxe5 c6 12.Bxd5 cxd5 13.d4 Bd6 14.Re3
  • C89Steiner Variation — 1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d5 9.exd5 e4

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