├── B30 - 1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. Bxc6 - 1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 (7)
└── B30 - 1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 4. Nc3 - 1. e4 c5 2. Nf3 Nc6 3. Bb5 Nf6 (5)