A10-A39 (+C20)

English Opening

175 named lines in this family, ECO A10-A39 (+C20). Under each line you get its moves and the sentences it adds that this page has not already printed; sixty lines to a page. A line's own page carries up to its first 4 per-move notes in full.

Main lineA10

1. c4

c4 fights for d5 without committing the centre pawns: White often fianchettoes and plays a reversed Sicilian with an extra tempo.

• 1. c4 Fights for d5 from the flank - contesting the centre without committing a centre pawn. Theory calls this the English Opening.

Anglo-Dutch DefenseA10

1. c4 f5

• 1... f5 Fights for e4 from the flank - contesting the centre without committing a centre pawn. Theory calls this the Anglo-Dutch Defense.

Anglo-Lithuanian VariationA10

1. c4 Nc6

• 1... Nc6 Develops the knight to c6, eyeing d4 and e5. Theory calls this the Anglo-Lithuanian Variation.

Anglo-Scandinavian DefenseA10

1. c4 d5

• 1... d5 Stakes a claim in the centre, controlling e4, and frees the bishop and queen. Theory calls this the Anglo-Scandinavian Defense.

Great Snake VariationA10

1. c4 g6

• 1... g6 Prepares the fianchetto: the bishop will take the long diagonal via g7. Theory calls this the Great Snake Variation.

Jaenisch GambitA10

1. c4 b5

• 1... b5 Challenges the pawn on c4 - the central tension has to resolve. The pawn is genuinely on offer - this is the Jaenisch Gambit: development and initiative over material.

Myers DefenseA10

1. c4 g5

• 1... g5 Opens the f8-h6 diagonal for the bishop. Theory calls this the Myers Defense.

Achilles-Omega GambitA10

1. c4 Nf6 2. e4

• 1... Nf6 Develops the knight to f6, eyeing d5 and e4. Theory calls this the Anglo-Indian Defense.
• 2. e4 Stakes a claim in the centre, controlling d5, and frees the bishop and queen. The pawn is genuinely on offer - this is the Achilles-Omega Gambit: development and initiative over material.

Anglo-Dutch Defense, Hickmann GambitA10

1. c4 f5 2. e4

• 2. e4 The pawn is genuinely on offer - this is the Hickmann Gambit: development and initiative over material.

Wade GambitA10

1. c4 f5 2. g4

• 2. g4 Challenges the pawn on f5 - the central tension has to resolve. The pawn is genuinely on offer - this is the Wade Gambit: development and initiative over material.

Adorjan DefenseA10

1. c4 g6 2. e4 e5

• 2... e5 Stakes a claim in the centre, controlling d4, and frees the bishop and queen. Theory calls this the Adorjan Defense.

Anglo-Scandinavian Defense, Löhn GambitA10

1. c4 d5 2. cxd5 e6

White is up material out of the opening - Black is banking on activity to show for it.

• 2. cxd5 Takes the pawn on d5, toward the centre.
• 2... e6 Challenges the pawn on d5 - the central tension has to resolve. Theory calls this the Löhn Gambit.

Anglo-Scandinavian Defense, Schulz GambitA10

1. c4 d5 2. cxd5 Nf6

• 2... Nf6 Theory calls this the Schulz Gambit.

Myers GambitA10

1. c4 g5 2. d4 Bg7

Black's kingside bishop takes the long diagonal.

• 2. d4 Stakes a claim in the centre, controlling e5, and frees the bishop and queen.
• 2... Bg7 Fianchettoes the bishop onto the long diagonal, pressuring d4 and e5 from a distance. The pawn is genuinely on offer - this is the Myers Gambit: development and initiative over material.

Zilbermints GambitA10

1. c4 g5 2. d4 e5

• 2... e5 The pawn is genuinely on offer - this is the Zilbermints Gambit: development and initiative over material.

Anglo-Dutch Variation, Chabanon GambitA10

1. c4 f5 2. Nf3 d6 3. e4

• 2. Nf3 Develops the knight to f3, eyeing d4 and e5.
• 2... d6 Supports the centre, adding control of e5.

Anglo-Dutch Variation, Ferenc GambitA10

1. c4 f5 2. Nc3 Nf6 3. e4

• 2. Nc3 Develops the knight to c3, eyeing d5 and e4.

Anglo-Scandinavian Defense, Malvinas VariationA10

1. c4 d5 2. cxd5 Qxd5 3. Nc3 Qa5

An early pawn trade leaves the c-file as White's avenue and the d-file as Black's - both sides get real winning chances down their own file.

• 2... Qxd5 Recaptures the pawn on d5.

Porcupine VariationA10

1. c4 f5 2. Nc3 Nf6 3. e4 fxe4 4. g4

An early pawn trade leaves the e-file as White's avenue and the f-file as Black's - both sides get real winning chances down their own file. Black comes out ahead on material - White needs concrete play to justify it.

King's English Variation, Botvinnik System, Prickly Pawn Pass SystemA10

1. c4 g6 2. Nc3 Bg7 3. g3 Nf6 4. Bg2 O-O 5. e4 d6 6. Nge2 e5 7. O-O c6 8. d3 a6

White's kingside bishop takes the long diagonal and Black's kingside bishop takes the long diagonal.

Caro-Kann Defensive SystemA11

1. c4 c6

• 1... c6 Theory calls this the Caro-Kann Defensive System.

Agincourt Defense, through 1... e6A13

1. c4 e6

• 1... e6 Supports the centre, adding control of d5. Theory calls this the Agincourt Defense.

Agincourt Defense, after 2. Nf3, through 2. Nf3A13

1. c4 e6 2. Nf3

Agincourt Defense, after 2. Nf3, through 2... d5A13

1. c4 e6 2. Nf3 d5

Agincourt Defense, Catalan Defense, after 3... c5A13

1. c4 e6 2. Nf3 d5 3. g3 c5

Agincourt Defense, Kurajica DefenseA13

1. c4 e6 2. Nf3 d5 3. g3 c6

Neo-CatalanA13

1. c4 e6 2. Nf3 d5 3. g3 Nf6

Agincourt Defense, Bogoljubow DefenseA13

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Bd6

White's kingside bishop takes the long diagonal.

Agincourt Defense, Catalan Defense AcceptedA13

1. c4 e6 2. Nf3 Nf6 3. g3 d5 4. Bg2 dxc4

Agincourt Defense, Catalan Defense, Semi-Slav DefenseA13

1. c4 e6 2. Nf3 Nf6 3. g3 d5 4. Bg2 c6

Neo-Catalan DeclinedA13

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7

Romanishin GambitA13

1. c4 Nf6 2. Nf3 e6 3. g3 a6 4. Bg2 b5

Agincourt Defense, Catalan Defense, after 3... b6A13

1. c4 e6 2. Nf3 d5 3. g3 b6 4. Bg2 Bb7 5. O-O

White's kingside bishop takes the long diagonal and Black's queenside bishop takes the long diagonal.

Agincourt Defense, Wimpy SystemA13

1. c4 e6 2. Nf3 Nf6 3. b3 d5 4. Bb2 c5 5. e3

White's queenside bishop takes the long diagonal.

Agincourt Defense, after 2. Nf3, through 5... O-OA13

1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Be7 5. e3 O-O

Agincourt Defense, after 2. Nf3, through 6. d4A13

1. c4 e6 2. Nf3 d5 3. b3 Nf6 4. Bb2 Be7 5. e3 O-O 6. d4

Agincourt Defense, Tarrasch DefenseA13

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 c5 5. b3 Nc6 6. O-O Be7

Agincourt Defense, Neo-Catalan Declined, after 1. c4, through 5. O-OA14

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O

Agincourt Defense, Neo-Catalan Declined, Early b3, through 5. b3A14

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. b3

Agincourt Defense, Neo-Catalan Declined, Early b3, after 5... b6A14

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. b3 b6

Agincourt Defense, Neo-Catalan Declined, Early b3, after 5... c5A14

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. b3 c5

Agincourt Defense, Neo-Catalan Declined, after 1. c4, through 6. b3A14

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O O-O 6. b3

Agincourt Defense, Neo-Catalan Declined, after 1. Nf3, through 6... c5A14

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. b3 c5

• 1. Nf3 Theory calls this the Zukertort Opening.
• 2. g3 Prepares the fianchetto: the bishop will take the long diagonal via g2. Theory calls this the King's Indian Attack.
• 2... Nf6 It also props up the d5 pawn.

Agincourt Defense, Neo-Catalan Declined, after 1. Nf3, through 7. e3A14

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. b3 c5 7. e3

Agincourt Defense, Keres DefenseA14

1. c4 e6 2. Nf3 d5 3. g3 Nf6 4. Bg2 Be7 5. O-O c5 6. cxd5 Nxd5 7. Nc3 Nc6

Agincourt Defense, Neo-Catalan Declined, after 1. Nf3, through 7... d4A14

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. b3 c5 7. e3 d4

Agincourt Defense, Neo-Catalan Declined, after 1. Nf3, through 7... Nc6A14

1. Nf3 d5 2. g3 Nf6 3. Bg2 e6 4. O-O Be7 5. c4 O-O 6. b3 c5 7. e3 Nc6

Anglo-Indian Defense, through 1... Nf6A15

1. c4 Nf6

Anglo-Indian Defense, King's Knight VariationA15

1. c4 Nf6 2. Nf3

Anglo-Indian Defense, King's Indian FormationA15

1. c4 Nf6 2. Nf3 g6

• 2... g6 Theory calls this the King's Indian Formation.

Anglo-Indian Defense, Old Indian FormationA15

1. c4 Nf6 2. Nf3 d6

• 2... d6 Theory calls this the Old Indian Formation.

Anglo-Indian Defense, Queen's Indian Formation, after 1... Nf6, through 2... b6A15

1. c4 Nf6 2. Nf3 b6

• 2... b6 Prepares the fianchetto: the bishop will take the long diagonal via b7. Theory calls this the Queen's Indian Formation.

Anglo-Indian Defense, Scandinavian DefenseA15

1. c4 Nf6 2. Nf3 d5

• 2... d5 Theory calls this the Scandinavian Defense.

Anglo-Indian Defense, Grünfeld FormationA15

1. c4 Nf6 2. Nf3 g6 3. g3 d5

Anglo-Indian Defense, Romanishin VariationA15

1. c4 e6 2. Nf3 Nf6 3. g3 a6

Anglo-Indian Defense, Scandinavian Defense, Exchange VariationA15

1. c4 Nf6 2. Nf3 d5 3. cxd5 Nxd5

Anglo-Indian Defense, Slav FormationA15

1. c4 Nf6 2. Nf3 g6 3. g3 c6

Anglo-Indian Defense, Anti-Anti-GrünfeldA15

1. c4 Nf6 2. Nc3 g6 3. Nf3 Bg7 4. e4

Anglo-Indian Defense, King's Indian Formation, Double FianchettoA15

1. c4 Nf6 2. Nf3 g6 3. g3 b6 4. Bg2 Bb7

Anglo-Indian Defense, Queen's Indian Formation, after 1... e6, through 4... Bb7A15

1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7

Lines 1–60 of 175 — page 1 of 3.

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