In 2021, Teikei Co., Ltd. started sponsoring
three Go events, here called the Teikei Shunei Cup (テイケイ杯俊英戦),
the Teikei Legend Cup
(テイケイ杯レジェンド戦),
and the Teikei Women's Legend Cup
(テイケイ杯女流レジェンド戦).
Teikei Shunei Cup
This is played in two leagues of six players each, with a best-of-three final
between the two league winners.