QGA, Janowsky-Larsen variation (D25)

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

Philidor (C41)

Larsen variation

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

King's Indian (E90)

Larsen variation

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

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

Sicilian (B60)

Richter-Rauzer, Larsen variation

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

Caro-Kann (B16)

Bronstein-Larsen variation

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

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

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)

Modern variation

1. b3 e5

Alekhine's defense (B04)

Modern, Larsen variation

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

Nimzovich-Larsen attack (A01)

Indian variation

1. b3 Nf6

Nimzovich-Larsen attack (A01)

Classical variation

1. b3 d5

Nimzovich-Larsen attack (A01)

English variation

1. b3 c5

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

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

QGD (D30)

Stonewall variation

1. d4 d5 2. c4 e6 3. Nf3 Nf6 4. e3 c6 5. Nbd2 Ne4 6. Bd3 f5