The registration programs of Gifu Challenge 2004 (2004.09.28)
| Program | Author(s) |
| KCC Igo | KCC Igo development team |
| Shikou Sakugo | TAJIMA Morihiko |
| MASAYAN | KOSHIDA Masatsune |
| martha | UJIIE Ichiro |
| GORO | OOISHI Yasuo |
| GORIMUCHU | NAGAYOSHI Hiroyuki |
| Go Intellect | Ken Chen |
| Katsunari | SEI Shin-ichi |
| Kinoa Igo | YAMADA Motoki |
| AYA | YAMASHITA Hiroshi |
| GOGATAKI | KUDOMI Shigetaka |
| MA-GO | MATSUBA Toshinobu |
| Padook Invincible 3.0 | Yongkyoon No |