├── A10 - 1. c4 - English Opening (5)
├── A10 - 1. Nf3 Nf6 2. c4 c5 3. g3 - English Opening: Anglo-Indian Defense, King's Knight Variation (0)
├── A11 - 1. c4 c6 - English Opening: Caro-Kann Defensive System (5)
├── A13 - 1. c4 e6 - English Opening (24)
├── A14 - 1. c4 e6 2. Nf3 d5 3. g3 Nf6 4.... - English Opening (25)
├── A15 - 1. c4 1... Nf6 2. g3 2... e5 - English Opening: Anglo-Indian Defense (0)
├── A15 - 1. c4 e6 2. Nf3 Nf6 3. g3 b6 4. Bg2 Bb7 - English Opening: Anglo-Indian Defense, Queen's Indian Formation (1)
├── A15 - 1. c4 Nf6 - English Opening: Anglo-Indian Defense (7)
├── A15 - 1. c4 Nf6 2. Nf3 b6 - English Opening: Anglo-Indian Defense, Queen's Indian Formation (2)
├── A15 - 1. c4 Nf6 2. Nf3 g6 - English Opening: Anglo-Indian Defense, King's Indian Formation (5)
├── A15 - 1. Nf3 Nf6 2. c4 c5 3. g3 b6 4. Bg2 Bb7 - English Opening: Anglo-Indian Defense, King's Knight Variation (1)
├── A15 - 1. Nf3 Nf6 2. c4 c5 3. g3 g6 4. Bg2 Bg7 5. d4 (2)
├── A15 - 1. Nf3 Nf6 2. c4 c5 3. g3 Nc6 4. d4 cxd4 - English Opening: Anglo-Indian Defense, King's Knight Variation (1)
├── A15 - 1. Nf3 Nf6 2. c4 e6 - English opening (11)
├── A15 - 1. Nf3 Nf6 2. c4 Nc6 - English opening (2)
├── A17 - 1. c4 Nf6 2. Nc3 e6 - English Opening: Anglo-Indian Defense, Hedgehog System (0)
├── A18 - 1. c4 e6 2. Nc3 Nf6 3. e4 - English Opening (2)
├── A19 - 1. c4 e6 2. Nc3 Nf6 3. e4 c5 - English Opening: Mikenas-Carls, Sicilian (2)
├── A20 - 1. c4 e5 - English Opening: King's English Variation (21)
├── A20 - 1. c4 e5 2. g3 Nf6 - English Opening: King's English Variation (4)
├── A21 - 1. c4 e5 2. Nc3 - English Opening: King's English Variation, Reversed Sicilian (11)
├── A22 - 1. c4 e5 2. Nc3 Nf6 - English Opening: King's English Variation, Two Knights Variation (5)
├── A23 - 1. c4 e5 2. Nc3 Nf6 3. g3 c6 - English Opening: King's English Variation, Two Knights Variation, Keres Variation (0)
├── A24 - 1. c4 e5 2. Nc3 Nf6 3. g3 g6 - English Opening: King's English Variation, Two Knights Variation, Fianchetto Line (0)
├── A25 - 1. c4 e5 2. Nc3 Nc6 - English Opening: King's English Variation, Reversed Closed Sicilian (2)
├── A26 - 1. c4 e5 2. Nc3 Nc6 3. g3 g6 4.... - English Opening (0)
├── A27 - 1. c4 e5 2. Nc3 Nc6 3. Nf3 - English Opening: King's English Variation, Three Knights System (0)
├── A28 - 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4.... - English Opening (19)
├── A28 - 1. c4 e5 2. Nf3 Nc6 3. Nc3 Nf6 4. d4 exd4 - English Opening: King's English Variation, Four Knights Variation (2)
├── A29 - 1. c4 e5 2. g3 Nf6 3. Bg2 d5 4. cxd5 Nxd5 - English Opening: King's English Variation, Four Knights Variation, Fianchetto Line (4)
├── A29 - 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 - English Opening: King's English Variation, Four Knights Variation, Fianchetto Line (4)
├── A29 - 1. c4 e5 2. Nc3 Nf6 3. Nf3 Nc6 4. g3 - English Opening: King's English Variation, Four Knights Variation, Fianchetto Line (14)
├── A30 - 1. c4 c5 - English Opening: Symmetrical Variation (5)
├── A30 - 1. Nf3 c5 2. c4 g6 3. e4 Bg7 4. d4 d6 - English Opening: Symmetrical Variation (1)
├── A30 - 1. Nf3 c5 2. c4 Nc6 3. d4 cxd4 4. Nxd4 Nf6 - English Opening: Symmetrical Variation (1)
├── A30 - 1. Nf3 c5 2. c4 Nc6 3. Nc3 e5 - English Opening: Symmetrical Variation (1)
├── A30 - 1. Nf3 c5 2. c4 Nc6 3. Nc3 g6 4. e3 Nf6 - English Opening: Symmetrical Variation (1)
├── A30 - 1. Nf3 c5 2. c4 Nf6 3. g3 Nc6 4. Bg2 d5 - English Opening: Symmetrical Variation (1)
├── A31 - 1. c4 Nf6 2. d4 c5 3. Nf3 - English Opening (1)
├── A32 - 1. c4 e6 2. d4 c5 3. Nf3 cxd4 4.... - English Opening (1)
├── A33 - 1. c4 e6 2. Nf3 Nf6 3. Nc3 c5 4.... - English Opening (3)
├── A34 - 1. c4 c5 2. Nc3 - English Opening: Symmetrical Variation, Normal Variation (2)
├── A34 - 1. c4 c5 2. Nf3 Nf6 3. Nc3 d5 4. cxd5 Nxd5 5. g3 Nc6 6. Bg2 Nc7 - English Opening: Symmetrical Variation, Rubinstein Variation (2)
├── A34 - 1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. d4 cxd4 - English Opening: Symmetrical Variation, Three Knights Variation (1)
├── A34 - 1. c4 c5 2. Nf3 Nf6 3. Nc3 e6 4. e3 a6 - English Opening: Symmetrical Variation, Three Knights Variation (1)
├── A34 - 1. c4 Nf6 2. Nc3 c5 3. g3 g6 4. Bg2 Bg7 - English Opening: Symmetrical Variation, Fianchetto Variation (1)
├── A34 - 1. c4 Nf6 2. Nc3 c5 3. Nf3 e6 4. g3 b6 - English Opening: Symmetrical Variation, Three Knights Variation (1)
├── A35 - 1. c4 c5 2. Nc3 Nc6 - English Opening: Symmetrical Variation, Two Knights Variation (5)
├── A36 - 1. c4 c5 2. Nc3 Nc6 3. g3 - English Opening: Symmetrical Variation, Two Knights, Fianchetto Variation (7)
├── A37 - 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 - English Opening: Symmetrical Variation, Three Knights, Fianchetto Variation (0)
├── A37 - 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 d6 (4)
├── A38 - 1. c4 c5 2. Nc3 Nc6 3. g3 g6 4. Bg2 Bg7 5. Nf3 Nf6 6. O-O (0)
├── A38 - 1. c4 Nf6 2. Nf3 c5 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 - English Opening: Symmetrical Variation, Full Symmetry Line (0)
├── A38 - 1. c4 Nf6 2. Nf3 c5 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 - English Opening: Symmetrical Variation, Full Symmetry Line (1)
├── A38 - 1. Nf3 c5 2. c4 Nf6 3. g3 Nc6 4. Bg2 g6 - English Opening: Symmetrical Variation, Full Symmetry Line (1)
├── A38 - 1. Nf3 Nf6 2. c4 c5 3. g3 g6 4. Bg2 Bg7 5. Nc3 Nc6 6. d4 (1)
└── A39 - 1. c4 Nf6 2. Nf3 c5 3. Nc3 Nc6 4. g3 g6 5. Bg2 Bg7 6. O-O O-O 7. d4 - English Opening: Symmetrical Variation, Mecking Variation (0)