Go online for beginners: the rules and how to play the computer for free

Go (го) is one of the oldest board games on Earth: it's over two thousand years old, yet the rules fit in a couple of paragraphs. And still there are more positions in Go than atoms in the universe — which is why computers only learned to reliably beat champions in 2016. Good news for a beginner: to start you need no board, no opponent, not even an account — you can play against a computer right in your browser in a minute. Let's cover the basics.

THE BOARD AND THE GOAL

A standard Go board is a 19×19 grid of lines. Stones go on the intersections of the lines, not in the squares. Two players, black and white; black moves first. The goal is to surround and hold more territory (empty intersections) than your opponent; captured enemy stones count too. Beginners are told to start on a 9×9 board: same rules, but the game is shorter and clearer.

HOW YOU MOVE

On your turn you place one stone of your color on any empty intersection. Stones don't move: once placed, a stone stays put until it's captured. You may also skip your turn — pass. When both players pass in a row, the game ends and you count the score.

LIBERTIES, ATARI AND CAPTURE

The key idea is liberties (breaths). A stone's liberty is an adjacent empty intersection along a line, horizontal or vertical (diagonals don't count). As long as a stone or a connected group has at least one liberty, it lives. If your opponent takes the last liberty, the whole group is lifted off the board and taken prisoner.

When a group has exactly one liberty left, that's atari — a warning that it can be captured next move. Spotting atari in time — yours and theirs — is the first skill worth drilling. There's also a subtle rule, ko: you can't play a move that instantly returns the board to the position it just had, otherwise captures would loop forever.

WHY GO IS SO DEEP

Simple rules breed incredible complexity. There's no luck on the board — only your decisions. Every stone at once builds a wall, reaches for territory and presses on the enemy's stones, and the balance between "take land" and "attack" is endlessly fine. That's why people study Go for a lifetime. It's also what makes it ideal online: you can replay a game instantly, and progress depends only on you.

WHERE TO PLAY ONLINE FOR FREE

1. Against a computer. The fastest start for a beginner is a game against a bot on a 9×9 board. Many Go servers let you play an engine (GNU Go, KataGo) right in the browser, nothing to install.
2. No signup. To just try it without an account, look for a play-a-bot or "guest" mode — popular free servers like online-go.com (OGS) have it. Registration is mainly for ranking.
3. Against people. Once you're comfortable, move on to live opponents with strength-based matchmaking.

IF GO FEELS HARD

Go is magnificent, but its barrier to entry is honestly high: even once you know the rules, your first games can drift when it comes to counting territory and the life of groups. If you want that same feeling of pure abstract strategy against a strong AI, but with a gentler start, try Highrise Heist (in Russian «Перехват высотки»). It's an original abstract board game: rules in a minute, depth for hundreds of games. The board has 10 stands, each holding up to 11 blocks; whoever holds the top group owns the highrise, and the goal is to close 6 of the 10 highrises in your color. The twist is the transfer: you can lift your top group and drop it onto an opponent's nearly-finished highrise, snatching it on the last block (hence the name). Your opponent is an AlphaZero-class neural net with five difficulty levels; there's online ranked play, tournaments and a daily Puzzle Rush. It's all free and right in the browser, no registration — you can start a game in seconds.

Go or Highrise Heist — the essence is the same: a simple rule, an ocean of decisions, and a live opponent in the shape of a strong AI. Play one short game today — that's enough to tell whether the genre is for you.