The Bosai Cup (Chinese: 博赛杯) is an invitational Go competition consisting of one player each from China, Japan, and South Korea.
The tournament consists of three players.
The remaining two players play a match, with the winner progressing to the final.
The loser of the first match plays the player with the bye, with the winner of this match progressing to the final.
[1] Iyama Yuta, representing Japan, was the winner of 1st Bosai Cup - the first edition, defeating Gu Li in the final.