Life-and-Death Problem Arena

Many players create original life-and-death problems while playing, solving, and studying Go. 101 Weiqi created the Life-and-Death Problem Arena so players can publish meaningful original problems and challenge the 101 community.

The Life-and-Death Problem Arena follows these rules:

1. To ensure problem quality, only players who have cleared the 1-dan stage in Go Challenge may submit problems. This restriction does not apply to users with elevated permissions.
2. Authors must submit an answer before applying to publish a problem in the Arena. Users with elevated permissions may publish without submitting an answer.
3. After a publication request is submitted, the system checks for similar problems within 30 minutes. A similarity above 80% causes the request to be rejected. If you disagree with the result, send a private message to an administrator to appeal.
4. Problems approved that day are published together at 21:00, when players may begin racing to solve them. No more than five problems are published each day.
5. After a problem is officially published, its author may still edit the stone placement, but every change is recorded.
6. Until the problem is solved, the answer submitted by the author is visible only to the author and administrators. The answer becomes public after the problem is solved. If the problem remains unsolved, the answer stays private permanently unless the author chooses to reveal it.
7. Based on the order in which answers were submitted, the author or an administrator designates the solver. The solver receives 50 Weiqi Beans and one point on the Arena Expert leaderboard. When the challenge ends, the author also receives 50 Weiqi Beans as thanks and one point on the Original Creator leaderboard.