PHILADELPHIA | A 15-year-old from Columbia won his division Saturday in the third Philadelphia Inquirer Sudoku National Championship.
Davis Borucki of Columbia claimed the event's intermediate division and $3,000.
The tournament drew 646 contestants ranging in age from 8 to 93.
Tammy McLeod, 32, of Los Angeles, solved an advanced puzzle in 7 minutes, 41 seconds to defeat former world and U.S. champion Thomas Snyder and win the overall championship. Her prize was $10,000 and a spot on the U.S. World Sudoku Team that will compete in the Fifth Annual World Sudoku Championship next spring in Philadelphia.
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Natan Tsyrulnik, 31, of Shelton, Conn., won the beginner division and $1,000.