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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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Queen's Gambit

Queen's Gambit Declined

1. d4 d5 2. c4 e6

163 named lines

Queen's Knight Variation Normal Defense Three Knights Variation Modern Variation

Slav Defense

1. d4 d5 2. c4 c6

Modern Line Three Knights Variation Two Knights Attack Alapin Variation

Grünfeld Defense

1. d4 Nf6 2. c4 g6 3. Nc3 d5

Three Knights Variation Three Knights Variation Exchange Variation Counterthrust Variation

Queen's Gambit Accepted

1. d4 d5 2. c4 dxc4

Normal Variation Normal Variation Classical Defense Showalter Variation

Semi-Slav Defense

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6

Main Line Normal Variation Main Line Semi-Meran Variation

Tarrasch Defense

1. d4 d5 2. c4 e6 3. Nc3 c5

Two Knights Variation Rubinstein System Prague Variation Classical Variation

Blackmar-Diemer Gambit

von Popiel Gambit Lemberger Countergambit Zeller Defense Blackmar Gambit

Neo-Grünfeld Defense

1. d4 Nf6 2. c4 g6 3. g3 d5

Classical Variation Delayed Exchange Variation Ultra-Delayed Exchange Variation Exchange Variation

Blackmar-Diemer Gambit Accepted

1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 exf3

Ryder Gambit Bogoljubow Defense Euwe Defense Teichmann Defense

Semi-Slav Defense Accepted

1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 e6 5. Bg5 dxc4

Richter-Veresov Attack

1. d4 Nf6 2. Nc3 d5 3. Bg5

Two Knights System Boyce Defense Richter Variation Veresov Variation

Blackmar-Diemer Gambit Declined

1. d4 d5 2. e4 dxe4 3. Nc3 Nf6 4. f3 Bf5

Weinsbach Defense Brombacher Countergambit Elbert Countergambit Gedult Defense

Rubinstein Opening

1. d4 Nf6 2. Nf3 e6 3. e3 c5 4. Bd3 d5 5. b3

Semi-Slav Defense Semi-Slav Defense Bogoljubow Defense Classical Defense

Amazon Attack

1. d4 d5 2. Qd3

Siberian Attack

Rapport-Jobava System

1. d4 d5 2. Nc3 Nf6 3. Bf4

Rapport-Jobava System, with e6

1. d4 d5 2. Nc3 e6 3. Bf4