walledInfunction

The empty points stone has already walled in: every empty region whose border is that colour's stones and nothing else — the ground scoreArea counts as theirs.

A stone played there gains its owner nothing under area scoring, and it fills the eyes the group lives by. So it is never a move worth making, and the computer players leave it out; a player who has nothing else left passes, which is how Go ends.

import { walledIn } from "@johnmorrisdotca/narabe/rules/go";

function walledIn(board: Cell[], size: number, stone: Stone): Set<number>

import { createGame, playMove } from "@johnmorrisdotca/narabe";
import { walledIn } from "@johnmorrisdotca/narabe/rules/go";

const go = playMove(createGame({variant:"go",size:9}),{row:4,col:4});
console.log(walledIn(go.board, go.settings.size, "black").size);

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