Scrabble have been sold worldwide and roughly one-third of American and half of British homes have a Scrabble set. There are around 4,000 Scrabble clubs around the world. The game is played by two to four players on a square board with a 15×15 grid of cells (individually known as "squares"), each of which accommodates a single letter tile. In official club and tournament games, play is between two players or, occasionally, between two teams each of which collaborates on a single rack. The board is marked with "premium" squares, which multiply the number of points awarded: eight dark red "triple-word"
Scrabble variants be declared as only one letter and may not change. For example, with a rack of AEILNS? (? = blank), a player announcing that the blank was a C and announcing the words SANICLE and INLACES would receive twice the base score; their opponent could steal the word SCALENI and score the base amount for himself. Duplicate Scrabble is a form of organized tournament Scrabble popular in French-speaking countries, in which all players use the same tiles and words on their board and during each round, within a fixed time limit, have to find the highest scoring word. Players only