Yearly Haya Go (lightning) knockout tournament sponsored by the Japanese national television station NHK.
The number of participants is 8 (edition 1, ..., 13), 16 (14, ..., 24), 26 (25, ..., 28) and 50 (29, ...).
Komi is 4.5 (edition 1, 2), 5.5 (3, ..., 50), 6.5 (51, ...).
The alloted thinking time is 10 minutes with 30 seconds byo-yomi.
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|---|---|
| Period | Issues |
| 2020-2029 | 2020 2021 2022 |
| 2010-2019 | 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 |
| 2000-2009 | 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 |
| 1990-1999 | 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 |
| 1980-1989 | 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 |
| 1970-1979 | 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 |
| 1960-1969 | 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 |
| 1950-1959 | 1954 1955 1956 1957 1958 1959 |
