Scrabble Day
Scrabble Day is held on April 13. April 13th is the birthday of Alfred Butts, the inventor of the Scrabble game. This event in the second decade of the month April is annual. 
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In 1933, New York City architect Alfred Mosher Butts created an early version of the game we know as Scrabble. To determine how many tiles there should be and how many points each letter should be worth, he calculated letter frequency on the front page of The New York Times.
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