Group 1 - The 19th World Chess Championship and the 5th Shanghai Cup Chess Masters Open were launched on September 28 in Shanghai, marking the first time in 26 years that Shanghai has hosted this prestigious chess event [1] - The World Chess Championship features 8 categories including men's individual, women's individual, men's team, women's team, and youth categories for U16 and U12, with nearly 200 participants from 26 countries and regions expected to attend [1] - The Shanghai Cup has developed into a mature event with increasing attention and influence, featuring categories such as open group, youth team competition, celebrity invitation competition, and amateur group [1][2] Group 2 - To encourage participation from amateur players, the 5th Shanghai Cup will hold an open group selection competition, allowing enthusiasts to compete for a spot in the main event [2] - The open men's group will consist of 24 players, including the top two from the previous year's qualification and the top 19 from the open group selection, along with three wildcard players [2] - The event will also include various promotional activities such as human-computer matches, family fun activities, and cultural displays to enhance interaction and engagement with the public [2]