Why Are There Different Scoring Systems?

Go developed independently across China, Japan, and Korea over centuries, and different regional traditions led to different ways of counting who wins. Today, the two most widely used systems are Chinese rules (area scoring) and Japanese rules (territory scoring). While they produce the same result in the vast majority of games, understanding their differences matters — especially for tournament play and edge cases.

Japanese (Territory) Scoring

Japanese rules are the most widely taught in Western countries and used in Japanese professional play. Under territory scoring:

  • You count only empty intersections enclosed by your stones (territory).
  • You add the number of captured opponent stones (prisoners) to your score.
  • Stones left on the board are not counted directly.
  • Dead stones — stones that both players agree cannot escape capture — are removed and counted as prisoners.

White receives komi (typically 6.5 points in Japanese rules) as compensation for Black moving first.

Chinese (Area) Scoring

Chinese rules use area scoring, which counts differently:

  • You count all empty intersections enclosed by your stones (territory).
  • You also count all your own living stones on the board.
  • Prisoners and captures are not counted separately.
  • Dead stones are removed, and their intersections count for the opponent.

White receives komi of 7.5 points under Chinese rules (the extra point accounts for scoring differences).

Side-by-Side Comparison

Feature Japanese Rules Chinese Rules
What is counted Territory + prisoners Territory + living stones
Stones on board Not counted Counted
Captures matter? Yes (as prisoners) Only indirectly
Komi (White bonus) 6.5 points 7.5 points
Ko complications More complex Simpler

When Do the Two Systems Give Different Results?

In the overwhelming majority of games, both systems produce the same winner. Differences arise in rare situations:

  • Sekis (mutual life): Under Japanese rules, empty points in seki typically don't count for either player. Under Chinese rules, they do.
  • Filling in territory: In Japanese rules, unnecessary moves inside your own territory cost points. In Chinese rules, they don't (since stones are counted).
  • Ko-related situations: Certain complex ko fights can resolve differently under each rule set.

Korean Rules

Korean rules are very similar to Japanese territory scoring, with some procedural differences around resolving disputes and handling certain ko situations. For most practical purposes, beginners can treat Korean and Japanese rules as equivalent.

Which Rules Should You Use?

For beginners, Chinese rules are often recommended because they are more forgiving — you don't need to worry as much about "wasted" moves at the end of the game. Many online servers let you choose your preferred rule set. If you plan to enter tournaments, check which rules your local Go association uses, as this varies by country and organization.