Hoshi Go

The 4,000-year-old game of territory, in your pocket. Play on 9×9, 13×13 or 19×19, challenge the built-in bot, and learn every rule in five short lessons.

Hoshi Go is a free, beautiful, fully offline way to play and learn Go — the ancient board game also known as Baduk or Weiqi.

PLAY • 9×9, 13×13 and full 19×19 boards • Pass-and-play with a friend on one phone • Challenge a built-in bot opponent, made for beginners and casual players • Handicap stones (2–9) to balance any matchup • Undo, resign, and proper Chinese (area) scoring with interactive dead-stone marking

LEARN • Five short interactive lessons take you from "what is a liberty?" to scoring your first game • Solve real capture puzzles right inside the lessons • Covers liberties, capture, ko, suicide, eyes, life & death, and territory

PRIVATE BY DESIGN • No ads, no accounts, no tracking, no internet required — ever • Collects zero data

Whether you have five minutes for a quick 9×9 game or an evening for a full 19×19 battle, the board is always ready.