Math Magic 1999 Archive
Tiling Reptiles Packing Squares Circles Covering Touching Graphs Numbers Digits Matrices Chess Games Other
1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020

Angle Frequencies
(January 1999)

updated 1/28/99

Disconnected Polyominoes
(February 1999)

updated 3/3/99

Average Arrays
(March 1999)

updated 3/7/99

Convex Spectra
(April 1999)

updated 4/13/21

Surround Numbers
(May 1999)

updated 3/5/02

Palindrome Products
(June 1999)

updated 10/12/17

Fairy Chess Endgames
(July 1999)

updated 4/20/01

Rectangles in Squares
(August 1999)

updated 7/9/07

Square Matrices
(September 1999)

updated 10/5/99

Stacking Squares Vertically
(October 1999)

updated 10/10/10

Non-monochromatic Cliques
(November 1999)

updated 11/25/99

Single Digit Formulas
(December 1999)

updated 12/15/02