Tongyang Securities Cup
Tongyang Securities Cup was a major international Go tournament held in 1990's. The sponsor Tongyang Securities Inc is a Korean company offering financial services. The first two editions of this tournament were more like a domestic Korean event, with only few international players invited. Beginning term 3, it became a full-fledged international tournament. The tournament was last held in 1998 and discontinued apparently due to the Asian financial crisis. Tongyang continues to support Go in the form of a new Internet-based Tongyang Securities Cup that has been held annually since 2004.
The main event was a knockout for 24 players, with 8 players (normally the stronger ones) seeded to round 2 directly. A small number of seats were decided through a qualifying event. Other seats were reserved for top finishing players from the previous term, and then allocated to China, Japan, Korea and Taiwan. The finals were best-of-5. The semi-finals were best-of-3 before changing to single game in term 8.
This tournament underscored Korea's dominance of Go world during 1990's, with teacher/student pair Cho Hunhyun and Lee Changho winning all but one titles. Ma Xiaochun, winning the title in term 6, became the first ever Chinese world champion.