Officially the China Changde Cup World Mingren Championship. This tournament between the Japanese Meijin, Chinese Mingren and Korean Myungin was held for the first time in 1996 and was a round-robin tournament. Lee Changho 7 dan beat 2-0 Takemiya Masaki 9 dan and Ma Xiaochun 9 dan; Takemiya beat Ma 2-0.
In 2010 the tournament was re-established in a different format. In the first round Lee Changho beat Gu Li, reaching directly the final. Then Gu Li beat Iyama Yuta. The final title game was played between Gu Li and Lee Changho and this time Gu Li won B+1.5, winning the tournament.
jwaytogo: Just posting to clarify the rules to this tournament. It is not a round robin tournament but a special pairing set up specifically for this tournament to keep the number of games small.
Of the three Meijins, one player will get a bye in the first round (as determined by lots). The other two players will play each other and the winner will get into the finals. The loser will get a chance to play the player with the bye for a spot in the finals.
It is quite like the opposite of a double elimination or knockout format. Instead of losing twice to get eliminated, you need to win twice to win the tournament.