B07

150 Attack

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Be3 c6 5.Qd2

 

A12

A12

1.c4 c6 2.Nf3 d5 3.b3

 

A14

A14

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

 

A16

A16

1.c4 Nf6 2.Nc3

 

A33

A33

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

 

A42

A42

1.d4 d6 2.c4

 

A59

A59

1.d4 Nf6 2.c4 c5 3.d5 b5 4.cxb5 a6 5.bxa6 Bxa6 6.Nc3 d6 7.e4

 

A61

A61

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3

 

A62

A62

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3

 

A63

A63

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O 9.O-O a6

 

A64

A64

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.Nf3 g6 7.g3 Bg7 8.Bg2 O-O 9.O-O a6 10.a4 Nbd7 11.Nd2

 

A68

A68

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3

 

A69

A69

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.f4 Bg7 8.Nf3 O-O 9.Be2 Re8

 

A71

A71

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Bg5

 

A72

A72

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2

 

A73

A73

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O

 

A74

A74

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O a6

 

A77

A77

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2

 

A78

A78

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Na6

 

A79

A79

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O Re8 10.Nd2 Na6 11.f3

 

A84

A84

1.d4 f5 2.c4

 

A85

A85

1.d4 f5 2.c4 g6 3.Nc3

 

A87

A87

1.d4 f5 2.c4 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3

 

A90

A90

1.d4 f5 2.c4 Nf6 3.g3 e6

 

A91

A91

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7

 

A92

A92

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3

 

A94

A94

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.b3 c6

 

A95

A95

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d5 7.Nc3

 

A96

A96

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6

 

A98

A98

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.Qc2

 

A99

A99

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O d6 7.Nc3 Qe8 8.b3

 

B00

Aachen Gambit, Nimzovich Defense

1.e4 Nc6 2.d4 d5 3.exd5 Nb4

 

C36

Abbazia Defense, KGA

1.e4 e5 2.f4 exf4 3.Nf3 d5 4.exd5 Nf6

 

A52

Abonyi Variation, Budapest

1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.e4 Nxe5 5.f4 Nec6

 

B20

Abrahams Variation, Sicilian Wing Gambit

1.e4 c5 2.b4 cxb4 3.Bb2

 

D31

Abrahams; Noteboom; Klaus Junge Var, QGD

1.d4 d5 2.c4 e6 3.Nc3 c6 4.Nf3 dxc4 5.a4 Bb4 6.e3 b5 7.Bd2 a5

 

E70

Accelerated Averbakh Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Bg5

 

B34

Accelerated Dragon; Fianchetto Var; B34

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6

 

D28

Accelerated Fianchetto, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2 b5

 

B06

Accelerated Gurgenidze

1.e4 g6 2.d4 Bg7 3.Nf3 d6 3.Nc3 c6

 

B27

Accelerated Paulsen, Sicilian

1.e4 c5 2.Nf3 Qc7

 

D81

Accelerated Russian Variation, Grunfeld; D81

1.d4 Nf6 2.c4 g6 3.Nc3 d5 4.Qb3

 

E24

Accelerated Saemisch Variation, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.a3 Bxc3+ 5.bxc3

 

B41

Accelerated Wimpy Variation, Sic

1.e4 c5 2.Nf3 e6 3.d4 cxd4

 

D45

Acclerated Meran, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.e3 a6

 

B27

Action Extension, Sicilian

1.e4 c5 2.Nf3 g6 3.c4 Bh6

 

C81

Adam Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Nxe4 6.d4 b5 7.Bb3 d5 8.dxe5 Be6 9.Qe2 Be7 10.c4

 

B90

Adams Attack, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.h3

 

B00

Adams Defense

1.e4 Nh6

 

C27

Adams Gambit, Vienna

1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Nc6 6.d4

 

A52

Adler Variation, Budapest

1.d4 Nf6 2.c4 e5 3.dxe5 Ng4 4.Nf3

 

A10

Adorjan System, English

1.c4 g6 2.e4 e5

 

D15

Advance System, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 c5

 

B12

Advance Variation, Caro

1.e4 c6 2.d4 d5 3.e5 

 

C02

Advance Variation, French; C02

1.e4 e6 2.d4 d5 3.e5

 

B29

Advance Variation, Sicilian

1.e4 c5 2.Nf3 Nf6 3.e5

 

D34

Advance Variation, Tarrasch

1.d4 d5 2.c4 e6 3.Nc3 c5 4.cxd5 exd5 5.Nf3 Nc6 6.g3 Nf6 7.Bg2 Be7 8.O-O O-O 9.Bg5 c4

 

C02

Advance; Nimzovich; Steinitz Var, Fr

1.e4 e6 2.d4 d5 3.e5 Bd7

 

A13

Afincourt Variation, English

1.c4 e6 2.Nf3 d5 3.g3

 

A53

Aged Gibbon Gambit

1.d4 Nf6 2.c4 d6 3.g4

 

A13

Agincourt; Kurajica Defense, English; A13

1.c4 e6

 

A00

Akahi Variation

1.e3 e5 2.Nc3 Nf6 3.f4 exf4 4.Nf3

 

C60

Alapin Defense, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bb4

 

B20

Alapin Formation, Smith-Morra Declined, Sicilian

1.e4 c5 2.d4 cxd4 3.c3 Nf6

 

C60

Alapin Gambit, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Bb4 4.c3 Ba5 5.Bxc6 dxc6

 

C68

Alapin Gambit, Ruy Lopez Exchange

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.O-O Bg4 6.h3 h5

 

C20

Alapin Opening

1.e4 e5 2.Ne2

 

C14

Alapin Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.Bxe7 Qxe7 7.Nb5

 

D08

Alapin Variation, QGD

1.d4 d5 2.c4 e5 3.dxe5 d4 4.Nf3 Nc6 5.Nbd2

 

D31

Alapin Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 b6

 

C73

Alapin Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 d6 5.Bxc6+ bxc6 6.d4 f6

 

D16

Alapin Variation, Slav; D16

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.a4

 

C25

Alapin Variation, Vienna

1.e4 e5 2.Nc3 Nc6 3.f4

 

B22

Alapin; Sveshnikov Var, Sicilian; B22

1.e4 c5 2.c3

 

A80

Alapin; Ulvestad; Manhattan; Kmoch Variation, Dutch

1.d4 f5 2.Qd3 

 

C00

Alapin; Witaker Gambit, French

1.e4 e6 2.d4 d5 3.Be3

 

C41

Alapin-Blackburne Gambit, Philidor

1.e4 e5 2.Nf3 d6 3.d4 Bg4 4.dxe5 Nd7

 

C00

Alapin-Diemer Gambit, French

1.e4 e6 2.d4 d5 3.Be3 dxe4 4.f3

 

C70

Alapin's Defense Deferred, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Bb4

 

D44

Alatortsev System, Semi-Slav

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 dxc4 6.e4 b5 7.e5 h6 8.Bh4 g5 9.Nxg5 Nd5

 

D31

Alatortsev; Petrosian, Charousek Var, QGD

1.d4 d5 2.c4 e6 3.Nc3 Be7

 

D08

Albin Countergambit; Cavalotti Var, QGD; D08

1.d4 d5 2.c4 e5

 

C53

Albin Gambit, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 Nf6 5.O-O

 

C14

Albin-Chatard Gambit, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.e5 Nfd7 6.h4 Bxg5 7.hxg5 Qxg5

 

D00

Albrecht; Karlshruhle Defense, BDG

1.d4 d5 2.e4 dxe4 3.Nc3 Nf6 4.f3 g6

 

D00

Alburt Defense, QP

1.d4 d5 2.Nc3 Bf5

 

B04

Alburt Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 g6

 

C15

Alekhine (Maroczy) Variation, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.Ne2

 

D10

Alekhine Attack, Slav

1.d4 d5 2.c4 c6 3.Nc3 dxc4 4.e4

 

D06

Alekhine Defense, QGD

1.d4 d5 2.c4 g6

 

D51

Alekhine Gambit, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.Nf3 h6 6.Bh4 dxc4

 

C45

Alekhine Gambit, Scotch

1.e4 e5 2.Nf3 Nc6 3.d4 exd4 4.Nxd4 Nf6 5.e5

 

B74

Alekhine Line, Sicilian Dragon

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.O-O O-O 9.Nb3 a5

 

D28

Alekhine System, Classical Defense, QGA; D28

1.d4 d5 2.c4 dxc4 3.Nf3 Nf6 4.e3 e6 5.Bxc4 c5 6.O-O a6 7.Qe2

 

D20

Alekhine System, QGA

1.d4 d5 2.c4 dxc4 3.e4 Nf6

 

B05

Alekhine Variation, Alekhine

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4 5.c4

 

E03

Alekhine Variation, Catalan

1.d4 Nf6 2.c4 e6 3.g3 d5 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 a6 7.Qc2

 

D06

Alekhine Variation, Chigorin Defense

1.d4 d5 2.c4 Nc6 3.Nf3 Bg4 4.Qa4

 

A92

Alekhine Variation, Dutch

1.d4 f5 2.c4 Nf6 3.g3 e6 4.Bg2 Be7 5.Nf3 O-O 6.O-O Ne4

 

D21

Alekhine Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 a6

 

D22

Alekhine Variation, QGA

1.d4 d5 2.c4 dxc4 3.Nf3 a6 4.e3 Bg4

 

D67

Alekhine Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 Nbd7 7.Rc1 c6 8.Bd3 dxc4 9.Bxc4 Nd5 10.Bxe7 Qxe7 11.Ne4

 

D51

Alekhine Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.Nf3 c6 6.e4

 

D38

Alekhine Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 Bb4 5.Qa4

 

B70

Alekhine Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be2 Bg7 7.O-O O-O 8.Nb3

 

D15

Alekhine Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e3

 

D15

Alekhine Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.Nc3 dxc4 5.e3 b5 6.a4 b4

 

C27

Alekhine Variation, Vienna

1.e4 e5 2.Nc3 Nf6 3.Bc4 Nxe4 4.Qh5 Nd6 5.Bb3 Be7 6.Nf3 Nc6 7.Nxe5

 

B02

Alekhine's Defense; B02

1.e4 Nf6 

 

C68

Alekhjne Variation, Ruy Lopez Exchange

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Bxc6 dxc6 5.d4 exd4 6.Qxd4 Qxd4 7.Nxd4 Bd6

 

B00

Alekseev Variation, Nimzovich; Heinola-Deppe Gambit

1.e4 Nc6 2.d4 d5 3.Nc3 e5

 

A00

Alessi Gambit, Grob

1.g4 f5

 

C53

Alexandre Gambit, Italian

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.c3 f5

 

C39

Allgaier; Cotter Cambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ng5

 

B27

Althouse; Stiletto Variation, Sicilian

1.e4 c5 2.Nf3 Qa5

 

A00

Alua Variation

1.e3 e5 2.Nc3 Nc6 3.f4 exf4 4.Nf3

 

A00

Amar; Paris Opening

1.Nh3

 

D00

Amazon Attack

1.d4 d5 2.Qd3

 

A00

Amazon, Dunst

1.Nc3 d5 2.e4 dxe4 3.Nxe4 Qd5

 

B45

American Attack, Sicilian

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Nf6 6.Ndb5 Bb4 7.Nd6+

 

A82

American Gambit, Dutch

1.d4 f5 2.e4 fxe4 3.Nd2

 

A06

Ampel Variation, Reti

1.Nf3 d5 2.Rg1

 

B72

Amsterdam (Battery) Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3 Bg7 7.Be2 Nc6 8.Qd2

 

A00

Amsterdam Attack

1.e3 e5 2.c4 d6 3.Nc3 Nc6 4.b3 Nf6

 

B93

Amsterdam Variation, Sicilian; B93

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.f4

 

D12

Amsterdam Variation, Slav

1.d4 d5 2.c4 c6 3.Nf3 Nf6 4.e3 Bf5 5.cxd5 cxd5 6.Nc3

 

C14

Anderssen (Richter) Attack, French

1.e4 e6 2.d4 d5 3.Nc3 Nf6 4.Bg5 Be7 5.Bxf6

 

C37

Anderssen Counter-Attack, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.Ne5 Qh4+ 6.Kf1 Nh6 7.d4 d6

 

C33

Anderssen Defense, KGA

1.e4 e5 2.f4 exf4 3.Bc4 g5

 

C39

Anderssen Defense, Kieseritsky Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 6.Bc4 d5 7.exd5 Bd6

 

C25

Anderssen Defense, Vienna

1.e4 e5 2.Nc3 Bc5

 

C23

Anderssen Gambit

1.e4 e5 2.Bc4 b5 3.Bxb5 c6

 

B01

Anderssen Variation, Center Counter

1.e4 d5 2.exd5 Qxd5 3.Nc3 Qa5 4.d4 e5

 

C51

Anderssen Variation, Evans

1.e4 e5 2.Nf3 Nc6 3.Bc4 Bc5 4.b4 Bxb4 5.c3 Be7

 

C77

Anderssen Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.d3

 

C65

Anderssen Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 Nf6 4.d3 d6 5.Bxc6+

 

B41

Anderssen; Counterattack Var, Sic

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nf6

 

C39

Anderssen-Cordel Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.h4 g4 5.Ne5 Nf6 6.Bc4 d5 7.exd5 Bd6 8.d4 Nh5 9.Bxf4 Nxf4

 

A00

Anderssen's Opening

1.a3

 

A00

Andersspike

1.a3 g6 2.g4

 

B20

Andreaschek Gambit, Sicilian

1.e4 c5 2.d4 cxd4 3.Nf3 e5 4.c3

 

A10

Anglo Scandanavian Defense, English

1.c4 d5

 

A15

Anglo System, English; A15

1.c4 Nf6

 

A21

Anglo-Dutch

1.c4 e5 2.Nc3 f5

 

A10

Anglo-Dutch Defense

1.c4 f5

 

A10

Anglo-Lithuanian Variation, English

1.c4 Nc6

 

A10

Anglo-Polish Dutch

1.c4 f5 2.b4

 

A41

Anglo-Slav Opening

1.d4 c6 2.c4 d6

 

A11

Anglo-Slav, English; A11

1.c4 c6

 

A16

Anti-anti-grunfeld

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

 

A31

Anti-Benoni Variation, Symmetrical English; A31

1.c4 c5 2.Nf3 Nf6 3.d4

 

A80

Anti-Classical Line, Dutch

1.d4 f5 2.Qd3 e6 3.g4

 

B90

Anti-English, Najdorf Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Be3 Ng4

 

D70

Anti-Grunfeld Variation

1.d4 Nf6 2.c4 g6 3.d5  

 

A80

Anti-Leningrad Variation, Dutch

1.d4 f5 2.Qd3 g6 3.g4

 

C88

Anti-Marshall Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.a4

 

D43

Anti-Meran Gambit, QGD

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

 

B06

Anti-Modern

1.e4 g6 2.d4 Bg7 3.Nc3 d6 4.Bc4 c6 5.Qe2

 

A80

Anti-Modern, Dutch

1.d4 f5 2.Qd3 d6 3.g4

 

D44

Anti-Moscow Gambit

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Nf3 c6 5.Bg5 h6 6.Bh4

 

E10

Anti-Nimzo-Indian; E10

1.d4 Nf6 2.c4 e6 3.Nf3

 

D30

Anti-Noteboom Gambit, Semi-Slav

1.d4 d5 2.c4 e6 3.Nf3 c6 4.Nc3 dxc4 5.g3

 

D31

Anti-Noteboom Variation, Semi-Slav

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

 

B07

Anti-Philidor

1.e4 d6 2.d4 Nf6 3.Nc3 Nbd7 4.f4

 

A00

Anti-Pirc Variation, Dunst; Myers Attack

1.Nc3 g6 2.h4

 

E17

Anti-Queen's Indian System

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.Nc3

 

B57

Anti-Sozin Variation, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bc4 Qb6

 

A80

Anti-Stonewall, Dutch

1.d4 f5 2.Qd3 d5 3.g4

 

D55

Anti-Tartakower Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Be7 5.e3 O-O 6.Nf3 h6 7.Bxf6

 

D02

Anti-Torre

1.d4 d5 2.Nf3 Bg4 3.Ne5 Bf5 4.g4

 

D02

Anti-Torre, QP

1.d4 d5 2.Nf3 Bg4

 

D00

Anti-Veresov

1.d4 d5 2.Nc3 Bg4

 

D10

Anti-Winawer Gambit, Slav

1.d4 d5 2.c4 c6 3.Nc3 e5 4.e4

 

A81

Antoshin-Hort Variation, Dutch

1.d4 f5 2.g3 Nf6 3.Bg2 d6

 

A45

Arafat Gambit

1.d4 Nf6 2.e4 Nxe4 3.Bd3 Nf6 4.Bg5

 

B98

Argenitne; Goteborg Var, Sicilian

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 a6 6.Bg5 e6 7.f4 Be7 8.Qf3 h6 9.Bh4 g5

 

A75

Argentine Attack, Benoni; A75

1.d4 Nf6 2.c4 c5 3.d5 e6 4.Nc3 exd5 5.cxd5 d6 6.e4 g6 7.Nf3 Bg7 8.Be2 O-O 9.O-O a6 10.a4 Bg4

 

D52

Argentine Variation, QGD

1.d4 d5 2.c4 e6 3.Nc3 Nf6 4.Bg5 Nbd7 5.e3 c6 6.Nf3 Qa5 7.Nd2 Bb4 8.Qc2 O-O 9.Bh4

 

D31

Argentinian Gambit, QGD

1.d4 d5 2.c4 Bf5 3.cxd5 Bxb1 4.Qa4+ c6 5.dxc6 Nxc6 6.Rxb1 Qxd4

 

C78

Arkangelsk; Counterthrust Var, Ruy

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O b5

 

C18

Armenian Line, French

1.e4 e6 2.d4 d5 3.Nc3 Bb4 4.e5 c5 5.a3 Ba5 6.b4 cxd4

 

B28

Aronin System, Sicilian

1.e4 c5 2.Nf3 a6 3.Be2

 

E97

Aronin-Taimanov Variation, KID; E97

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Nf3 O-O 6.Be2 e5 7.O-O Nc6

 

C95

Arseniev Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 d6 8.c3 O-O 9.h3 Nb8 10.d4 Nbd7 11.c4

 

A34

Asymmetrical Variation, English

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

 

B01

Atkinson (Kloosterboer) Variation, Center Counter

1.e4 d5 2.exd5 c6 3.dxc6 e5

 

C37

Australian Gambit, KGA

1.e4 e5 2.f4 exf4 3.Nf3 g5 4.Bc4 g4 5.h4

 

B09

Austrian Attack, Pirc; B09

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4

 

D06

Austrian Defense; Summetrical Defense, QGD

1.d4 d5 2.c4 c5

 

B09

Austrian; Yugoslav Defense, Pirc

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.f4 Bg7 5.Nf3

 

E30

Averbakh Gambit, Nimzo-Indian

1.d4 Nf6 2.c4 e6 3.Nc3 Bb4 4.Bg5 h6 5.Bh4 c5 6.d5 b5

 

E73

Averbakh Variation, KID

1.d4 Nf6 2.c4 g6 3.Nc3 Bg7 4.e4 d6 5.Be2 O-O 6.Bg5

 

A41

Averbakh Variation, Modern

1.d4 g6 2.c4 Bg7 3.Nc3 d6 4.e4

 

E14

Averbakh Variation, QID

1.d4 Nf6 2.c4 e6 3.Nf3 b6 4.e3 Bb7 5.Bd3 c5 6.O-O Be7 7.b3 O-O 8.Bb2 cxd4 9.Nxd4

 

C87

Averbakh Variation, Ruy Lopez

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 d6

 

B03

B03

1.e4 Nf6 2.e5 Nd5 3.d4

 

B04

B04

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3

 

B05

B05

1.e4 Nf6 2.e5 Nd5 3.d4 d6 4.Nf3 Bg4

 

B07

B07

1.e4 d6

 

B08

B08

1.e4 d6 2.d4 Nf6 3.Nc3 g6 4.Nf3

 

B11

B11

1.e4 c6 2.Nc3

 

B12

B12

1.e4 c6 2.d4

 

B14

B14

1.e4 c6 2.d4 d5 3.exd5 cxd5 4.c4 Nf6 5.Nc3

 

B15

B15

1.e4 c6 2.d4 d5 3.Nc3

 

B19

B19

1.e4 c6 2.d4 d5 3.Nc3 dxe4 4.Nxe4 Bf5 5.Ng3 Bg6 6.h4 h6 7.Nf3

 

B25

B25

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6

 

B26

B26

1.e4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Be3

 

B27

B27

1.e4 c5 2.Nf3

 

B31

B31

1.e4 c5 2.Nf3 Nc6 3.Bb5 g6

 

B32

B32

1.e4 c5 2.Nf3 Nc6 3.d4

 

B33

B33

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 Nf6

 

B35

B35

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.Be3 Nf6 7.Bc4

 

B37

B37

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7

 

B38

B38

1.e4 c5 2.Nf3 Nc6 3.d4 cxd4 4.Nxd4 g6 5.c4 Bg7 6.Be3

 

B41

B41

1.e4 c5 2.Nf3 e6 3.d4

 

B42

B42

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Bd3

 

B43

B43

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 a6 5.Nc3

 

B45

B45

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3

 

B46

B46

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 a6

 

B48

B48

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3

 

B49

B49

1.e4 c5 2.Nf3 e6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 Qc7 6.Be3 a6 7.Be2

 

B53

B53

1.e4 c5 2.Nf3 d6 3.d4

 

B54

B54

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4

 

B55

B55

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6

 

B56

B56

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3

 

B58

B58

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2

 

B59

B59

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Be2 e5 7.Nb3

 

B61

B61

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Qd2

 

B62

B62

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6

 

B64

B64

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7 8.O-O-O O-O 9.f4

 

B65

B65

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 Be7 8.O-O-O O-O 9.f4 Nxd4 10.Qxd4

 

B66

B66

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6

 

B67

B67

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O Bd7

 

B68

B68

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O Bd7 9.f4 Be7

 

B69

B69

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 Nc6 6.Bg5 e6 7.Qd2 a6 8.O-O-O Bd7 9.f4 Be7 10.Nf3 b5 11.Bxf6

 

B72

B72

1.e4 c5 2.Nf3 d6 3.d4 cxd4 4.Nxd4 Nf6 5.Nc3 g6 6.Be3