Colle Zukertort System
1 • Sprad •- Main Line
- Colle - Grunfeld (original Colle)
- Colle verses Queens Indian
- Colle Zukertort main line
- Sprad
Ultimate Chess Course
2 • Sprad •- Smirnov Igor - Demidiukov Evgenij (UKR)
- Sulejmanova Ava (RUS) - Smirnov Igor
- Capablanca Jose Raul (CUB) - Znosko-Borovsky Eugene
- Stopkin Vladimir (UKR) - Smirnov Igor
- Sprad