Mathematica Journal
Volume 11, Issue 2


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Crossing Number Graphs
Ed Pegg Jr and Geoffrey Exoo

Sudoku is just one of hundreds of great puzzle types. This 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.



About the Authors
Ed Pegg Jr
Scientific Information Editor
Wolfram Research, Inc.

Geoffrey Exoo
Professor of Mathematics and Computer Science
Indiana State University
Terre Haute, IN 47809

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