The ear-reddening game at move 127 on Stone’s 3D board in the tatami room

Go, brought
to life

Play now

Find your
happy place

Beach · Day

Set the scene with your favorite board, stones, and lighting.

It’s music
to your ears

Kick back and relax with a soothing soundtrack built for watching and playing.

Less setup
more Go

Find your game

Ranked, free, and matches against the AI.

AI analysis

Explore unlimited possibilities with free AI analysis.

Beautiful in 3D

Lifelike boards and stones in beautiful surroundings.

All in your browser

Play, watch, and learn without installing a thing.

Stone’s 3D board in a sunset garden, with AI move suggestions and game analysis

Play everywhere
from anywhere

Live games from Fox, OGS and Pandanet in Stone’s Watch list

Play and watch games from OGS, Fox and Pandanet in rich 3D environments.

Just you
and the game

Zen mode: the board and bowls fill the scene

There’s less to look at and more to see in Zen mode.

Try the move
you didn’t play

AI analysis: Lee Sedol × Luo Xihe, move 100

Explore every variation with free & unlimited AI analysis.

100,000+professional games

Stone’s searchable professional game archive
Lee Sedol and Luo Xihe’s November 2005 game on Stone

Read
a little deeper

Thousands of puzzles

A life-and-death puzzle played against Stone’s AI opponent

Follow your own line

Play any move, see how AI responds.

Puzzle Rush

Puzzle Rush options for puzzle count and time limit

Push yourself a little further

Set your pace with adjustable difficulty and time limits.

Your game
Your way

Every move right on the mark

Magnifying-glass placement on mobile.

Mobile Go with the stone-placement magnifier open

A little easier on the eyes

Settle in with dark mode.

Stone’s dark interface

Your next move

Play now