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Chess Opening Database

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Example Searches: Queens gambit, B33, d4 d5

English diagram

English (A30)

Symmetrical, hedgehog system

1. c4 c5 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. Nc3 Be7

English diagram

English (A30)

Symmetrical, hedgehog, flexible formation

1. c4 c5 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 5. O-O e6 6. Nc3 Be7 7. d4 cxd4 8. Qxd4 d6 9. Rd1 a6 10. b3 Nbd7

English diagram

English (A35)

Symmetrical, Four knights system

1. c4 c5 2. Nc3 Nc6 3. Nf3 Nf6

English diagram

English (A36)

Symmetrical, Botvinnik system

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e4

Four knights diagram

Four knights (C49)

Symmetrical, Maroczy system

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6 7. Ne2

English diagram

English (A34)

Symmetrical, Three knights system

1. c4 c5 2. Nc3 Nf6 3. Nf3 d5 4. cxd5 Nxd5

English diagram

English (A34)

Symmetrical, Rubinstein system

1. c4 c5 2. Nc3 Nf6 3. g3 d5 4. cxd5 Nxd5 5. Bg2 Nc7

English diagram

English (A37)

Symmetrical, Botvinnik system Reversed

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 e5

English diagram

English (A36)

Symmetrical, Botvinnik system Reversed

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. e3 e5

Sicilian, Szen, hedgehog variation diagram

Sicilian, Szen, hedgehog variation (B44)

1. e4 c5 2. Nf3 e6 3. d4 cxd4 4. Nxd4 Nc6 5. Nb5 d6 6. c4 Nf6 7. N1c3 a6 8. Na3 Be7 9. Be2 O-O 10. O-O b6

Ruy Lopez diagram

Ruy Lopez (C66)

Berlin defense, hedgehog variation

1. e4 e5 2. Nf3 Nc6 3. Bb5 Nf6 4. O-O d6 5. d4 Bd7 6. Nc3 Be7

English diagram

English (A34)

Symmetrical variation

1. c4 c5 2. Nc3

QGD diagram

QGD (D06)

Symmetrical (Austrian) defense

1. d4 d5 2. c4 c5

English diagram

English (A33)

Symmetrical variation

1. c4 c5 2. Nf3 Nf6 3. d4 cxd4 4. Nxd4 e6 5. Nc3 Nc6

English diagram

English (A34)

Symmetrical variation

1. c4 c5 2. Nc3 Nf6 3. g3

English diagram

English (A38)

Symmetrical variation

1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nf6

English diagram

English (A32)

Symmetrical variation

1. c4 c5 2. Nf3 Nf6 3. d4 cxd4 4. Nxd4 e6

English diagram

English (A36)

Symmetrical variation

1. c4 c5 2. Nc3 Nc6 3. g3

Four knights diagram

Four knights (C49)

Symmetrical variation

1. e4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. Bb5 Bb4 5. O-O O-O 6. d3 d6

English diagram

English (A35)

Symmetrical variation

1. c4 c5 2. Nc3 Nc6