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B E Y O N D S U D O K U Ripple Effect

Ed Pegg
Organization: Wolfram Research, Inc.
Department: Scientific Information Group
Journal / Anthology

The Mathematica Journal
Year: 2006
Volume: 10
Issue: 2

Sudoku, today's most well-known grid-solving puzzle, was originally invented by Howard Garns in 1978. NIKOLI Co., Ltd., a magazine publisher, introduced the puzzle in Japan during the 1980s. Almost 30 years later, its popularity suddenly exploded. Bookstores now carry dozens of Sudoku books. Eventually, other puzzle types will explode in popularity. This new column presents obscure logic puzzles of various sorts and challenges the readers to solve the puzzles in two ways: by hand and with Mathematica. For the latter, solvers are invited to send their code to The person submitting the most elegant solution will receive a prize.

*Mathematics > Recreational Mathematics

Sudoku, puzzles