100 minutes solving time
*Round 4 - 3 helpmates 50 minutes solving time
*Round 5 - 3 moremovers 80 minutes solving time
*Round 6 - 3 selfmates 50 minutes solving time

Sections

*Team Championship - To qualify as an official team world championship, there must be at least seven teams from seven countries present. This section has grown from nine teams in 1977 to now averaging 20.
*Individual - Likewise, for an official individual world championship

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