Gruenfeld (D94)

Flohr defense

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. e3 O-O 6. Bd3 c6 7. O-O Bf5

Alekhine's defense (B05)

Modern, Flohr variation

1. e4 Nf6 2. e5 Nd5 3. d4 d6 4. Nf3 Bg4 5. Be2 c6

QGA, Flohr variation (D25)

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 Be6

Gruenfeld (D90)

Flohr variation

1. d4 Nf6 2. c4 g6 3. Nc3 d5 4. Nf3 Bg7 5. Qa4+

QGA (D28)

Classical, Flohr variation

1. d4 d5 2. c4 dxc4 3. Nf3 Nf6 4. e3 e6 5. Bxc4 c5 6. O-O a6 7. Qe2 b5 8. Bb3 Nc6 9. Rd1 c4 10. Bc2 Nb4 11. Nc3 Nxc2 12. Qxc2 Bb7 13. d5 Qc7

Sicilian (B32)

Flohr variation

1. e4 c5 2. Nf3 Nc6 3. d4 cxd4 4. Nxd4 Qc7

English, Nimzovich, Flohr variation (A20)

1. c4 e5 2. Nf3 e4

Sicilian (B71)

Dragon, Levenfish; Flohr variation

1. e4 c5 2. Nf3 d6 3. d4 cxd4 4. Nxd4 Nf6 5. Nc3 g6 6. f4 Nbd7

English (A18)

Mikenas-Carls, Flohr variation

1. c4 Nf6 2. Nc3 e6 3. e4 d5 4. e5

Caro-Kann (B18)

Classical, Flohr variation

1. e4 c6 2. d4 d5 3. Nc3 dxe4 4. Nxe4 Bf5 5. Ng3 Bg6 6. Nh3

Ruy Lopez (C92)

Closed, Flohr-Zaitsev system (Lenzerheide variation)

1. e4 e5 2. Nf3 Nc6 3. Bb5 a6 4. Ba4 Nf6 5. O-O Be7 6. Re1 b5 7. Bb3 O-O 8. c3 d6 9. h3 Bb7

KGA (C36)

Abbazia defense (Classical defense, Modern defense[!])

1. e4 e5 2. f4 exf4 3. Nf3 d5

Ruy Lopez (C79)

Steinitz defense deferred (Russian defense)

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

Two knights defense (C57)

Fegatello attack, Polerio defense

1. e4 e5 2. Nf3 Nc6 3. Bc4 Nf6 4. Ng5 d5 5. exd5 Nxd5 6. Nxf7 Kxf7 7. Qf3+ Ke6 8. Nc3 Ne7

Three knights (C46)

Winawer defense (Gothic defense)

1. e4 e5 2. Nf3 Nc6 3. Nc3 f5

Alekhine's defense (B02)

Brooklyn defense

1. e4 Nf6 2. e5 Ng8

Norwegian defense (B06)

1. e4 g6 2. d4 Nf6 3. e5 Nh5 4. g4 Ng7

QGD (D06)

Marshall defense

1. d4 d5 2. c4 Nf6

Old Benoni defense (A43)

1. d4 c5 2. d5 Nf6

Robatsch defense (B06)

1. e4 g6 2. d4 Bg7 3. Nc3