Duplicate Scrabble is an alternative form of the game where all players have the same letters and board in front of them, and play against the theoretical top score.
After the allotted time period, the arbiter stops the clock and the players must submit their solutions to the nearest official.
The highest scoring word (known as the top) is announced and placed on the display board by the arbiter, and the players do the same.
There are 5 age categories; cadet (younger than 16) junior (16-18), senior (all players) vermeil (60-69) and diamant (70+).
The match play Scrabble world cup event was introduced in 2006, won by Parfait Mouanda of the Republic of the Congo.
The 2007 championship was won by Amar Diokh of Senegal who beat Frenchman Edouard Lebeau two games to nil in the final.