Vienna (C26)

Mengarini variation

1. e4 e5 2. Nc3 Nf6 3. a3

Queen's pawn (E60)

Mengarini attack

1. d4 Nf6 2. c4 g6 3. Qc2

King's Indian (E97)

Orthodox, Aronin-Taimanov variation (Yugoslav attack / Mar del Plata variation)

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

Sicilian (B41)

Kan variation

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

QGD (D38)

Ragozin variation

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

QGD (D37)

Classical variation (5.Bf4)

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Nf3 Be7 5. Bf4

QGD (D35)

Exchange variation

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. cxd5

QGA (D20)

Linares variation

1. d4 d5 2. c4 dxc4 3. e4 c5 4. d5 Nf6 5. Nc3 b5

QGA (D21)

Ericson variation

1. d4 d5 2. c4 dxc4 3. Nf3 b5

QGA (D22)

Haberditz variation

1. d4 d5 2. c4 dxc4 3. Nf3 a6 4. e3 b5

QGA (D23)

Mannheim variation

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Qa4+

QGA, Bogolyubov variation (D24)

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. Nc3 a6 5. e4

QGD (D55)

Neo-Orthodox variation, 7.Bh4

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bh4

KGD (C30)

Norwalde variation

1. e4 e5 2. f4 Qf6

QGD (D55)

Petrosian variation

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 O-O 6. Nf3 h6 7. Bxf6 Bxf6 8. Rc1 c6 9. Bd3 Nd7 10. O-O dxc4 11. Bxc4

QGD (D55)

Neo-Orthodox variation

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

QGD (D53)

Lasker variation

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Be7 5. e3 Ne4

QGD (D51)

Manhattan variation

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. e3 Bb4

QGD (D51)

Alekhine variation

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

QGD (D51)

Rochlin variation

1. d4 d5 2. c4 e6 3. Nc3 Nf6 4. Bg5 Nbd7 5. Nf3 c6 6. Rc1 Qa5 7. Bd2