Weiqi · Baduk · 囲碁

Sit down and
play Go.

Nine, thirteen or nineteen lines. Against the computer, a friend across the world, or whoever is sitting next to you.

Five AI levels 9×9, 13×13, 19×19

The rules

Simpler than chess

One kind of stone, four ideas. Here they are, playing out on the real engine.

Multiplayer

Straight between browsers

Games run over WebRTC, so moves arrive as fast as your connection allows.

1

Create a room

You get a short code and a link. Send whichever is easier.

2

They join

The link opens the board. The code works from anywhere.

3

Anyone can watch

Spectators follow the same room live, with the move list and a score estimate.

4

Drop out, come back

Lose signal and the game reconnects, then resyncs from the other player.

Room code

K7QM2

Five characters. No ambiguous letters.

Peer to peer Reconnects Spectators Undo & rematch

Never played before?

The rules take ten minutes. Learn them on a real board, with problems that mark themselves.