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The supplemental information provided here includes solutions for contests, contest winners, editorials, and other reader responses to our articles. We hope that you find these useful.

Issue Electronic Material
September 2007 Taking Sudoko Seriously by Laura Taalman

This article had many wonderful puzzle variations on Sudoku (Figures 10-14). We will post the solutions soon.
 
November 2006 Number Theory Crossword Puzzle by Thomas P. Dence and Jenise A. Smalley
The puzzle is currently available. Solutions are finally available.
 
September 2006 Pentominoko by Laura Taalman. Solution available.

Hidden Word Crossword and Contest by Laura Taalman.
T-shirts go to David Goldsmith, faculty member at the College of Saint Rose, David Rhee, student at McNally High School, Ross Brater, undergraduate at Ohio Wesleyan University, and Lola Thompson, undergraduate at University
of Chicago for submitting the correct answer and a number closest to the randomly selected number 83. The original crossword and its solution are available.
April 2006 Self-answering Question Contest---Winning entries from September 2005 contest. Plus the Mathematica code to verify entry by Tupper and Wagon and even more self-answering questions for your enjoyment.
February 2006

Links to some of our artistic authors. 

George Hart

 Sculpture

Robert Bosch

 Domino Art

Thomas Hull

 Origami Mathematics

Larry Lesser

 Mathemusican

Gwen Fisher

 Beaded Beads

Hidden Word Crossword and Contest by Laura Taalman.
Submit your solution for fabulous prizes by April 15, 2006.
 
November 2005 A (Mostly) Differential Equations Crossword Puzzle by Thomas Dence, Jenise Smalley, and Kenneth Gasser
The puzzle and solution are available.

Thanks to everyone who participated in the online Math Horizons survey. Special congratulations go to senior mathematics major Brian Worthen from Bryan, Texas. He was randomly selected from all the participants to receive five free MAA books!
 
September 2005 Mathematical Inversions---Winning entries from November 2004 contest.

Liars and Truthtellers: Learning Logic from Raymond Smullyan by Robert L. Holliday
Additional puzzles and solutions for your enjoyment. 

The Virginia Tech Regional Math Contest by Peter A. Linnell
The question from a previous VTRMC and its solution are available.

Self-answering Question Contest by Chris Hill
Submit your entry (both question and answer!)
 
April 2005 Playing with Matches by Eric Libicki
Questions and answers available.
 
February 2005  A reader response to Stuart Boersma's article A Mathematician's Look at Foucault's Pendulum. It gives a simpler geometric derivation of the same result and would be suitable for discussion in an undergraduate or even high school math class. The result is one of those delightful "AHA!"s that make mathematics so much fun.

A Comment on Stuart Boersma's article "A Mathematician's Look at Foucault's Pendulum" by Greg Johnson (posted June 2005)

Self-Referential Aptitude Test by Jim Propp  
Questions and answers available.
 
September 2004 Biography of a Contest Problem by Steven Dunbar & Kevin Hankin
Solution to regular n-pointed star problem.
 
April 2004 Analysis Word Search  by Thomas Dence, Ken Gasser, Jenn Meyer, & Jenise Smalley
The puzzle and solutions are available.
 
November 2002 A reader response to The Devil is in the Culture by sarah-maria belcastro with Aaron Howard. It gives a different perspective on Enzensberger's The Number Devil and provides some insight on the original German.

"Personal Refections on The Number Devil" by Angie Thuy-Anh Mai (posted June 2005)
November 2000 The Final Exam: World Wide Web Treasure Hunt---solutions and winners!
April 1999 The Final Exam: Pi Mnemonics ---winning entry!
February 1999 The Final Exam: Who Said It? ---solutions.

Last updated 18 November 2007