Colle Zukertort System
1 • Sprad •- Main Line
- Colle - Grunfeld (original Colle)
- Colle verses Queens Indian
- Colle Zukertort main line
- Sprad
Improved Blackmar-Diemer Gambit
1 • Sprad •- Blackmar-Diemer Gambit
- Improved Blackmar-Diemer Gambit
- If exd4
- If Bd5
- Sprad