├── D31 - 1. c4 e6 2. Nc3 d5 3. d4 Be7 4. cxd5 exd5 5. Bf4 c6 6. e3 - Queen's Gambit Declined: Charousek Variation (6)
├── D31 - 1. c4 e6 2. Nc3 d5 3. d4 Be7 4. cxd5 exd5 5. Bf4 c6 6. h3 - Queen's Gambit Declined: Charousek Variation (1)
└── D31 - 1. c4 e6 2. Nc3 d5 3. d4 Be7 4. cxd5 exd5 5. Bf4 Nf6 6. e3 - Queen's Gambit Declined: Charousek Variation (6)