## MacMahon squares
The most extensive research into these sets, over three decades, was done by the American engineer Wade Philpott (1918–85), of Lima, Ohio, who identified all the possible symmetrical shapes that MacMahon squares and triangles could solve with both matching edge colors and uniform border color, and who calculated all the numbers of solutions for the MacMahon squares' 4 × 6 rectangle.
## Related entry• Thirty Colored Cubes puzzle## Related categories• GAMES AND PUZZLES• TILINGS ## Recommended productsNice sets of MacMahon Squares and MacMahon Triangles are available from Kadon Enterprises, Inc. in lasercut acrylic. For more details, go here. | |||||||||

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