Also available at nicbk.com/rengo-client-web
See the original blog post.
Go for more than two players
Rengo is a version of Go that can be played with four players. In this rendition of Rengo, any number of players can join a room to play together.
The rules are the same as in regular Go.
There are two teams: white and black.
Players will be alternately assigned to teams as they join.
A player can quit the game at any time.
However, there is also a
pass button to simulate passing in other
Go variations, whereby a player can skip their turn.
If all players skip their turn in order, then the game ends.
A player who has just passed is denoted with their row filled red.