About the Author:

Harry L. Nelson

Mathematics is recreation to Harry. In fact, in the 1970s he was the editor of the Journal of Recreation Mathematics for over 5 years, and as Emeritus Editor, is currently on the Editorial Board of that publication.

In 1978, with David Slowinski, he discovered the then largest known prime number. In 1980 Harry became associated with the Cray Blitz computer chess programming endeavor, with Robert Hyatt. This effort culminated in Cray Blitz winning the Computer Chess World Championship in 1983 retaining the title until 1989.

A Topeka, Kansas boy who went east to attend and graduate from Harvard University in mathematics, he also received an M.A. in mathematics from Kansas University. Venturing to the west coast he worked as a computer expert at the University of California’s Lawrence Livermore National Laboratory for 30 years.

He now devotes full time to the development of puzzles and games with his
company Minimax Game, Inc. Minimax’s mission is to serve as a “think tank” for games. Harry is leader of the Har-e-brain Corps whose members assist him in game development. There are currently 20 mechanical puzzles and/or games on the U.S. market for which he has made substantial contributions, including RUSH HOUR®.

Pohaku™ is Harry’s first game being published with his cousin, Penny Norman, of ScienceWiz™ fame. Look for their other new puzzle, Cool Circuits™.

Harry has four children and “roughly” nine grandchildren. He and his
wife, Claire, live in Livermore, California.

RUSH HOUR ® is a registered trademark of ThinkFun, Inc.™

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