├── D10 - 1. d4 d5 2. c4 c6 - Slav Defense (11)
├── D11 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 - Slav Defense: Quiet Variation (1)
├── D11 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bg4 - Slav Defense: Quiet Variation, Pin Defense (1)
├── D11 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4.... - Slav Defense (4)
├── D12 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. e3 Bf5 - Slav Defense: Quiet Variation, Schallopp Defense (6)
├── D13 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. cxd5 cxd5 - Slav Defense: Exchange Variation (6)
├── D14 - 1. d4 d5 2. c4 c6 3. cxd5 cxd5 4. Nc3 Nf6 5. Nf3 Nc6 6. Bf4 Bf5 - Slav Defense: Exchange Variation, Symmetrical Line (4)
├── D14 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. cxd5 cxd5 5. Nc3 Nc6 6. Bf4 Bf5 7. e3 e6 8. Qb3 Bb4 Queen's Gambit Declined Slav, exchange, Trifunovic variation (2)
├── D15 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 - Slav Defense: Three Knights Variation (5)
├── D16 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 - Slav Defense: Alapin Variation (0)
├── D16 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 e6 - Slav Defense: Soultanbeieff Variation (3)
├── D17 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 - Slav Defense: Czech Variation (7)
├── D18 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 - Slav Defense: Czech Variation, Classical System (0)
└── D19 - 1. d4 d5 2. c4 c6 3. Nf3 Nf6 4. Nc3 dxc4 5. a4 Bf5 6. e3 e6 7. Bxc4 Bb4 8. O-O - Slav Defense: Czech Variation, Dutch Variation (1)