In practice these events almost always are based in East Asian countries with a professional system: in Japan for go and shogi, and in China, South Korea and Taiwan for go. The system originated from competitions sponsored by Japanese newspapers, and has the effect that major events are spread out over a whole year of preliminaries, with a matchplay final that takes place over a month or two.
In practice, these events almost always occur in East Asian countries with a professional structure: in Japan for go and shogi, and in China, South Korea, and Taiwan for go. The system originated from competitions organized by Japanese newspapers, leading to major events being spread out over a year of preliminary rounds, culminating in a month or two-long matchplay final.