ECO Volume C · C00–C99

Volume C — Open Games & the French

The oldest battlegrounds in chess — the Ruy Lopez, Italian Game, Scotch and King's Gambit — plus the entire French Defence complex. 1.e4 e5 classics & the French Defence.

Classical Game Deep Lines

C60

More named sub-variations of the open games: Morphy Defence sub-lines, Italian regroupings, Scotch structures and the romantic gambit continuations that fill out the theory tree.

For BlackIntermediate

French Defence

C00

The French Defence is the opening of strategic counterpunchers: Black invites White to build a big centre, then spends the whole game hammering at it. The bad bishop on c8 is a small price for the healthiest structure in chess — Botvinnik, Korchnoi and Morozevich all made it their life's work.

For BlackIntermediate

French Defence

C00

Black invites White to build a big centre, then spends the game hammering at it — the opening of strategic counterpunchers.

For BlackIntermediate

French Defence: Winawer Variation

C15

The sharpest French: bishop pair sacrificed to wreck White's pawns and hunt the initiative.

For BlackAdvanced

French, Winawer Variation

C15

The sharpest French line: Black gives the bishop pair to wreck White's pawns and fights with piece play against the doubled c-pawns.

For BlackAdvanced

Italian Game

C50

The Italian Game is where most players fall in love with chess — and where the modern elite now spend their theory budgets. The Giuoco Pianissimo squeezes are the new main lines: slow, rich, and full of long-term plans that reward deep understanding.

For WhiteBeginner-friendly

Italian Game

C50

Steinitz's original defence: ...d6 solidifies e5 — passive but principled, with clear structural logic.

For WhiteBeginner-friendly

Italian Game: Giuoco Pianissimo

C50

The modern main line: both sides manoeuvre for twenty moves before a single queenside pawn moves.

For WhiteIntermediate

King's Knight Opening

C40

The full Evans complex: castling into open lines, d4 tension and piece swarms for the pawn.

For WhiteEffortless

King's Pawn Game

C20

The umbrella over all 1.e4 e5 lines without an early Bc4/Bb5 — home of the Centre Game, King's Knight Opening and more.

For WhiteEffortless

Ruy Lopez

C60

The Ruy Lopez is chess's cathedral — every world champion has prayed here. White's bishop pins the c6-knight against the e5 pawn, building the slow, inexorable squeeze that made Capablanca, Fischer and Karpov immortal. Black has a dozen rich defensive systems, from Kramnik's Berlin Wall to Kasparov's Marshall Attack.

For WhiteAdvanced

Ruy Lopez

C60

The Spanish Game — 500 years old, the deepest opening in chess, the main battleground of nearly every world championship match.

For WhiteAdvanced

Ruy Lopez, Berlin Defence

C65

The Berlin Wall — Kramnik's engine-proof fortress that toppled Kasparov in 2000.

For BlackAdvanced

Ruy Lopez, Morphy Defence

C70

The main Open Ruy tabiya: c3/d4 support, Nd4-f5 ideas and Black's ...Be6 consolidation.

For BlackIntermediate

Ruy Lopez: Berlin Defence

C65

The Berlin: Black grabs e4 and shortcuts theory — from Open lines to the endgame Wall.

For WhiteAdvanced

Ruy Lopez: Berlin Wall

C67

The endgame fortress that beat Kasparov: bishop pair and structure versus everything.

For WhiteAdvanced

Ruy Lopez: Closed Defence

C84

The classical main line for a century: knight dances, h3 preparation, the d4 break.

For WhiteAdvanced

Ruy, Closed Defence

C84

The Chigorin — a century of world championship battles: ...Na5/...c5 queenside pressure versus White's d4 break.

For BlackAdvanced

Ruy, Closed, 9.h3

C92

The Breyer setup: ...Bb7, ...Re8 and the knight waiting on b8 — the deepest of all Closed Ruy structures.

For BlackAdvanced

Ruy, Morphy Defence, 5.O-O

C78

The main Ruy move order: castling first, then Re1/h3/c3 — the gateway to every Closed Spanish system.

For BlackAdvanced

Scotch Game

C45

The Scotch opens the centre immediately and trades pawn tension for free piece play — straightforward plans, minimal theory, fighting chances forever. Kasparov's 1990s weapon of choice and the perfect classical opening for club players.

For WhiteBeginner-friendly

Scotch Game

C45

The Scotch opens the centre at once and trades pawn tension for free piece play — Kasparov's 1990s weapon of choice.

For WhiteBeginner-friendly

Classical Game Deep Lines: Italian, 3...Nf6 Setup

C55

The Two Knights move order: counterattacking e4 at once.

For BlackBeginner-friendly

Classical Game Deep Lines: Ruy, Berlin Wall 9.Nc3

C67

The Nc3 development: the Berlin endgame's main line.

For BlackAdvanced

French Defence: Advance Variation

C02

The Milner-Barry battleground: e5 space versus the ...c5/...Qb6 hits on d4 and b2.

For BlackIntermediate

French Defence: Classical Variation

C11

The Steinitz setup: the c5/e5 tension with ...Qb6 pressure on b2 and d4.

For BlackIntermediate

French Defence: Tarrasch Variation

C03

Tarrasch's system: the wedge without the Winawer pin — deep positional battles.

For BlackIntermediate

French Defence: Winawer Poisoned Pawn

C19

The French's own Poisoned Pawn: ...Qc7 sidesteps g4 raids and counterattacks.

For BlackExpert

French, Advance Variation

C02

The Milner-Barry battleground: White's e5 wedge gains space while Black targets d4 and b2 — forcing and trap-rich.

For WhiteIntermediate

French, Classical Variation

C11

The classical Steinitz setup: ...Nfd7 development, the c5/e5 tension and queenside play against White's space.

For BlackIntermediate

French, Tarrasch Variation

C03

Tarrasch's anti-French system: the d4-e5 wedge without the Winawer pin — deep positional battles around d4.

For WhiteIntermediate

French, Winawer, Advance Variation

C16

The Qg4 raid: White immediately attacks g7 while Black hunts the c3/c4 pawns — mutual chaos from move seven.

For WhiteAdvanced

French, Winawer, Poisoned Pawn

C19

The French's own Poisoned Pawn: Black sidesteps the g4 raid and builds the ...Qc7/...Nbc6 counterattack.

For BlackExpert

Giuoco Piano

C53

The Quiet Game is anything but: the classical d4 break leads to Møller-style attacks and famous piece sacrifices.

For WhiteIntermediate

Giuoco Piano, Main Line

C54

The main Giuoco Piano: the Nxe4 grab, the O-O piece sacs and White's raging initiative down the open lines.

For WhiteIntermediate

Italian Game: Giuoco Piano, Main Line

C53

The romantic main line: the d4 break, the pin, and the famous piece sacrifices.

For WhiteIntermediate

Italian Game: Italian, 4.d3 Main

C50

The Re1 build-up: the classical prelude to the d4 break at maximum safety.

For WhiteBeginner-friendly

Italian Game: Two Knights Defence

C55

The solid treatment: d3 keeps the bishop safe and the plans slow.

For WhiteBeginner-friendly

Marshall Attack

C89

The greatest pawn sacrifice in opening history: ...d5 crashes through and Black's pieces swarm the kingside.

For BlackAdvanced

Open Game Deep Lines

C60

The deep-line archive of Volume C: named sub-variations of the Ruy Lopez, Italian, French, Scotch, King's Gambit and the romantic gambits — the lines that decide real games once both players know the first ten moves.

For WhiteIntermediate

Open Game Deep Lines: Italian, Pianissimo 8.a4 Setup

C50

The a4/Ba7 structure: the modern Pianissimo battleground.

For WhiteIntermediate

Open Game Deep Lines: Ruy, Open 7.Bb3 Main

C80

The main Open Ruy tabiya: material balance with sharp middlegames.

For WhiteAdvanced

Ruy Lopez, Berlin, Open Variation

C67

The Berlin endgame: queens off, bishop pair for Black, fortress for the ages — the 2000 match decider.

For BlackAdvanced

Ruy Lopez, Exchange Variation

C68

White wrecks Black's queenside structure at once and plays the long game — the eternal Spanish squeeze.

For WhiteIntermediate

Ruy Lopez: Breyer Variation

C94

The knight returns to b8! Passive-looking, hyper-solid — Petrosian's fortress.

For WhiteAdvanced

Ruy Lopez: Chigorin Variation

C96

A century of world championship battles: ...Na5/...c5 versus the d4 break.

For WhiteAdvanced

Ruy Lopez: Exchange Variation

C68

The structure war: broken queenside pawns versus the bishop pair — a game of centuries.

For WhiteIntermediate

Ruy Lopez: Marshall Attack

C89

The greatest pawn sacrifice in opening history: ...d5 crashes through for eternal initiative.

For WhiteAdvanced

Ruy Lopez: Open Variation

C80

The Open Ruy: e4 grabbed, compensation proven — the sharpest classical lines.

For WhiteAdvanced

Ruy Lopez: Zaitsev Variation

C92

Zaitsev's ...Bb7: Karpov's lifetime weapon, theory-rich and strategically deep.

For WhiteAdvanced

Ruy, Closed, 6.Re1 d6

C87

The Closed main tabiya: ...Na5 hits Bb3 while White prepares d4 — the Chigorin complex begins.

For BlackAdvanced

Ruy, Closed, Breyer Defence

C94

The Breyer: the knight returns to b8! Passive-looking, hyper-solid — Petrosian's fortress and a modern elite choice.

For BlackAdvanced

Ruy, Closed, Breyer, 10.d4

C95

The Breyer main tabiya: the d7-knight covers c5 and e5 while both sides manoeuvre.

For WhiteAdvanced

Ruy, Closed, Chigorin Variation

C96

The Chigorin — a century of world championship battles: ...Na5/...c5 queenside pressure versus White's d4 break.

For BlackAdvanced

Ruy, Closed, Chigorin, Main Line

C97

The classical Chigorin tabiya: ...Qc7 regrouping and knight manoeuvres decide the strategic squeeze.

For BlackAdvanced

Ruy, Open Variation

C80

The Open Ruy: Black grabs e4 and dares White to prove compensation in the sharpest classical lines.

For BlackAdvanced

Scotch Game: Classical Variation

C45

The classical main line: ...Qf6 pressure versus c3/Be3 solid development.

For WhiteIntermediate

Scotch Game: Mieses Variation

C45

The full Schmidt tabiya: c4/Nd5 tension and the eternal e5 wedge.

For WhiteIntermediate

Scotch Game: Schmidt Variation

C45

The Schmidt: the e5 wedge and the structural squeeze after Nxc6.

For WhiteBeginner-friendly

Two Knights Defence

C55

Black counterattacks e4 at once with 3...Nf6 — gateway to the Fried Liver, the Traxler and famous traps.

For BlackIntermediate