Gruenfeld (D86)

Exchange, Larsen variation

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. cxd5 Nxd5 5. e4 Nxc3 6. bxc3 Bg7 7. Bc4 O-O 8. Ne2 Qd7 9. O-O b6

Philidor (C41)

Larsen variation

1. e4 e5 2. Nf3 d6 3. d4 exd4 4. Nxd4 g6

QGA, Janowsky-Larsen variation (D25)

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Bg4

King's Indian (E90)

Larsen variation

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. e4 d6 5. Nf3 O-O 6. Be3

Alekhine's defense (B04)

Modern, Larsen variation

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 dxe5

Sicilian (B61)

Richter-Rauzer, Larsen variation, 7.Qd2

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

Caro-Kann (B16)

Bronstein-Larsen variation

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Nf6 5. Nxf6+ gxf6

Nimzovich-Larsen attack (A01)

Symmetrical variation

1. b3 b6

Nimzovich-Larsen attack (A01)

Polish variation

1. b3 b5

Nimzovich-Larsen attack (A01)

Dutch variation

1. b3 f5

Nimzovich-Larsen attack (A01)

English variation

1. b3 c5

Nimzovich-Larsen attack (A01)

Classical variation

1. b3 d5

Nimzovich-Larsen attack (A01)

Indian variation

1. b3 Nf6

Nimzovich-Larsen attack (A01)

Modern variation

1. b3 e5

Sicilian (B60)

Richter-Rauzer, Larsen variation

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 Nc6 6. Bg5 Bd7

Nimzovich-Larsen attack (A01)

1. b3

Reti (A06)

Nimzovich-Larsen attack

1. Nf3 d5 2. b3

King's Indian (E62)

Fianchetto, Larsen system

1. d4 Nf6 2. c4 g6 3. Nc3 Bg7 4. Nf3 d6 5. g3 O-O 6. Bg2 c6 7. O-O Bf5

QGD (D35)

Exchange variation

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

Ruy Lopez (C69)

Exchange variation, 5.O-O

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