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Library

Opening library

143 families, 3,533 named lines. Open one to study it move by move, practise it against the board, or add it to a repertoire.

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King's Knight Opening

1. e4 e5 2. Nf3

Normal Variation Konstantinopolsky

Ruy Lopez

1. e4 e5 2. Nf3 Nc6 3. Bb5

230 named lines

Morphy Defense Morphy Defense Closed Closed

French Defense

191 named lines

Normal Variation Paulsen Variation Tarrasch Variation Winawer Variation

Italian Game

1. e4 e5 2. Nf3 Nc6 3. Bc4

171 named lines

Two Knights Defense Giuoco Piano Evans Gambit Classical Variation

King's Gambit

King's Gambit Accepted

1. e4 e5 2. f4 exf4

136 named lines

King's Knight's Gambit King's Knight's Gambit King's Knight's Gambit King's Knight's Gambit

Three Knights Opening

1. e4 e5 2. Nf3 Nc6 3. Nc3

Steinitz Defense Winawer Defense Schlechter Variation Steinitz-Rosenthal Variation

Scotch Game

1. e4 e5 2. Nf3 Nc6 3. d4

Scotch Gambit Classical Variation Steinitz Variation Horwitz Attack

Vienna Game

1. e4 e5 2. Nc3

Falkbeer Variation Max Lange Defense Stanley Variation Vienna Gambit

Four Knights Game

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6

Spanish Variation Scotch Variation Scotch Variation Accepted Halloween Gambit

Petrov's Defense

1. e4 e5 2. Nf3 Nf6

Modern Attack Classical Attack Modern Attack Stafford Gambit

Bishop's Opening

1. e4 e5 2. Bc4

Berlin Defense Boi Variation Ponziani Gambit Urusov Gambit

Philidor Defense

1. e4 e5 2. Nf3 d6

Nimzowitsch Variation Lion Variation Exchange Variation Hanham Variation

Center Game

Normal Variation Paulsen Attack Variation Berger Variation Kieseritzky Variation

Latvian Gambit

1. e4 e5 2. Nf3 f5

Mayet Attack Corkscrew Countergambit Mason Countergambit Diepstraten Countergambit

Center Game Accepted

1. e4 e5 2. d4 exd4

King's Gambit Declined

1. e4 e5 2. f4 d5

Falkbeer Countergambit Accepted Classical Variation Classical Variation Panteldakis Countergambit

Ponziani Opening

1. e4 e5 2. Nf3 Nc6 3. c3

Jaenisch Counterattack Ponziani Countergambit Jaenisch Counterattack Spanish Variation

Vienna Gambit, with Max Lange Defense

1. e4 e5 2. Nc3 Nc6 3. f4

Knight Variation Pierce Gambit Steinitz Gambit Hamppe-Allgaier Gambit

Danish Gambit

1. e4 e5 2. d4 exd4 3. c3

Danish Gambit Accepted

1. e4 e5 2. d4 exd4 3. c3 dxc3

Classical Defense Svenonius Defense Chigorin Defense Copenhagen Defense

Elephant Gambit

1. e4 e5 2. Nf3 d5

Maróczy Gambit Paulsen Countergambit Wasp Variation

Portuguese Opening

1. e4 e5 2. Bb5

Miguel Gambit Portuguese Gambit

Gunderam Defense

1. e4 e5 2. Nf3 Qe7

Irish Gambit

1. e4 e5 2. Nf3 Nc6 3. Nxe5

Latvian Gambit Accepted

1. e4 e5 2. Nf3 f5 3. exf5

Main Line Bilguer Variation Foltys-Leonhardt Variation Foltys Variation

King's Pawn Opening

Speers Van Hooydoon Gambit

Bongcloud Attack

1. e4 e5 2. Ke2

Danish Gambit Declined

1. e4 e5 2. d4 exd4 3. c3 d5

Dresden Opening

1. e4 e5 2. Nf3 Nc6 3. c4 Nf6 4. Nxe5