The Guksu (National Champion) title features a 8 player double knockout system to determine the challenger. The winners of the winner and loser section play a best of 3 match to determine the challenger. The title is decided in a best of 5 match with 5 hours thinking time and 1 minute byo-yomi.
The Guksu title match was reduced to a best-of-three match in 1998 due to financial reasons of the sponsor.
| Edition | Final | Details | ||
|---|---|---|---|---|
| 52nd | 2008 | 0-0 | ||
| 51st | 2007 | Lee SeDol | Yun JunSang | 3-0 |
| 50th | 2006 | Yun JunSang | Lee ChangHo | 3-1 |
| 49th | 2005 | Lee ChangHo | Choi CheolHan | 3-2 |
| 48th | 2004 | Choi CheolHan | Lee ChangHo | 3-0 |
| 47th | 2003 | Choi CheolHan | Lee ChangHo | 3-2 |
| 46th | 2002 | Lee ChangHo | Cho HanSung | 2-0 |
| 45th | 2001 | Lee ChangHo | Cho Hunhyun | 3-1 |
| 44th | 2000 | Cho Hunhyun | Rui Naiwei | 3-0 |
| 43rd | 1999 | Rui Naiwei | Cho Hunhyun | 2-1 |
| 42nd | 1998 | Cho Hunhyun | Lee ChangHo | 2-0 |
| 41st | 1997 | Lee ChangHo | Seo Bongsoo | 3-1 |
| 40th | 1996 | Lee ChangHo | Cho Hunhyun | 3-2 |
| 39th | 1995 | Lee ChangHo | Cho Hunhyun | 3-1 |
| 38th | 1994 | Lee ChangHo | Cho Hunhyun | 3-2 |
| 37th | 1993 | Lee ChangHo | Cho Hunhyun | 3-0 |
| 36th | 1992 | Cho Hunhyun | Lee ChangHo | 3-1 |
| 35th | 1991 | Cho Hunhyun | Lee ChangHo | 3-2 |
| 34th | 1990 | Lee ChangHo | Cho Hunhyun | 3-0 |
| 33rd | 1989 | Cho Hunhyun | Lee ChangHo | 3-1 |
| 32nd | 1988 | Cho Hunhyun | Seo Bongsoo | 3-0 |
| 31st | 1987 | Seo Bongsoo | Cho Hunhyun | 3-1 |
| 30th | 1986 | Seo Bongsoo | Cho Hunhyun | 3-0 |
| 29th | 1985 | Cho Hunhyun | Seo Bongsoo | 3-0 |
| 28th | 1984 | Cho Hunhyun | Seo Bongsoo | 3-1 |
| 27th | 1983 | Cho Hunhyun | Seo Bongsoo | 3-2 |
| 26th | 1982 | Cho Hunhyun | Seo Bongsoo | 3-1 |
| 25th | 1981 | Cho Hunhyun | Seo Bongsoo | 3-1 |
| 24th | 1980 | Cho Hunhyun | Seo Bongsoo | 3-0 |
| 23rd | 1979 | Cho Hunhyun | Ha Chanseok | 3-0 |
| 22nd | 1978 | Cho Hunhyun | Kim Soo-chang | 3-0 |
| 21st | 1977 | Cho Hunhyun | Hong Chong-hyung | 3-0 |
| 20th | 1976 | Cho Hunhyun | Ha Chanseok | 3-1 |
| 19th | 1974 | Ha Chanseok | Kang Chul-min | 3-1 |
| 18th | 1973 | Ha Chanseok | Yun Ki-hyon | 3-1 |
| 17th | 1972 | Yun Ki-hyon | No Yong-ha | 3-1 |
| 16th | 1971 | Yun Ki-hyon | Kim In | 3-2 |
| 15th | 1970 | Kim In | Cho Namchul | 3-2 |
| 14th | 1969 | Kim In | Kim Chae-ku | 3-0 |
| 13th | 1968 | Kim In | Cho Namchul | 3-1 |
| 12th | 1967 | Kim In | Yun Ki-hyon | 3-0 |
| 11th | 1966 | Kim In | Yun Ki-hyon | 3-0 |
| 10th | 1965 | Kim In | Cho Namchul | 3-1 |
| 9th | 1964 | Cho Namchul | Yun Ki-hyon | 3-1 |
| 8th | 1963 | Cho Namchul | Yi Chang-sae | 3-2 |
| 7th | 1962 | Cho Namchul | Yi Chang-sae | 3-1 |
| 6th | 1961 | Cho Namchul | Kim In | 3-1-1 |
| 5th | 1960 | Cho Namchul | Kim Pong-son | 2-1 |
| 4th | 1959 | Cho Namchul | Kim Myong-hwan | 2-1 |
| 3rd | 1958 | Cho Namchul | Kim Myong-hwan | 4-1 |
| 2nd | 1957 | Cho Namchul | Min Yonghyon | 7-0 |
| 1st | 1956 | Cho Namchul | ||