In Go, a rank is assigned to every regular player, which indicates their skill level.
The ranks of particularly good players range from 1 dan up to 9 dan.
But can you tell someone's strength just from looking at their games?
Can you judge how strong other players are?
This site allows you to try and see.
You will be presented a kifu (game record) of a game without information about the players. You then try to guess their ranks, before you get to see their real ranks. You'll be in for some surprises!