Study of several classical games
1 - Kronoz -- Ohashi Soko - Honinbo Sansa
- Ito Sokan vs Matsumoto Shoson
- Tagawa Koto - Ohashi Sokei 3, lans handicap spel
- Ohashi Soyo 2 - Ito Soin
- Kronoz
Nakabisha main line plus sidelines
2 - Kronoz -- Chapter 1: Nomaru Nakabisha
- Chapter 2:Nomaru Nakabisha S5c
- Gokigen Nakabisha G5h
- Gokigen Nakabisha P2e
- Kronoz
Sumisu system for shodan-4dan
1 - Kronoz -- Chapter 1: Quick rook pawn push
- Chapter two: Gold defense + rapid attack
- Rook capture
- Rook capture
- Kronoz