Sources and method

The game reference

• British Go Association — How to Play (new tab): Intersections, liberties, chains and captures. This introduction uses a different scoring method: this app’s scoring is documented separately.

Facts specific to this app

The modes, settings and differences described are checked against the app’s specifications and source code. They are presented separately from the general rules of the game.

The examples

Content checks verify the board, coordinates and outcome of the illustrated situation. They also verify the stated rule constants. The site does not run any native engine.