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Black Captures (Captured by White)
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White Captures (Captured by Black)
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Go (Weiqi) Rules & Guide

1. Liberties & Capture

Stones are placed on intersections. Adjacent empty points are "liberties". When all liberties of a stone or group are occupied by the opponent, they are captured.

2. Suicide & Ko Repetitions

Placing a stone where it has zero liberties is forbidden unless it simultaneously captures enemy stones. The Ko rule prohibits repeating the exact prior board position.

3. Pass & Territory Scoring

When both players pass consecutively, the game ends. Territory is automatically calculated with semi-transparent visual territory overlays.

4. Board Sizes & P2P Multiplayer

Supports 9x9, 13x13, and 19x19 boards, AI self-play, and WebRTC P2P online multiplayer with spectator rooms and in-game chat.