- The 2nd International Amateur Pair Go Tournament: NKB Cup
- The 3rd Fujitsu Cup
- Semifinal: Rin Kaiho vs. Kobayashi Koichi
- Semifinal: Nie Weiping vs. Cho Hun-hyeon
- Kobayashi Triumphs Again in Japan-China Meijin Play-off
- Games 1 & 2: Kobayashi Koichi vs. Ma Xiaochun
- 1990: Prizes and Statistics
- Tournament Go 1990
- 15th Gosei Title, Game 3
- 38th Oza Title, Game 5
- 16th Tengen Title, Game 4
- 9th Women’s Honinbo Title, Game 3
- The Gateway to a Professional Career
- Efficiency (1) 52-56

- All About the Two-Step Hane (3)

- Go Topics, Go Trivia 64

|