ERNŐ RUBIK - a Hungarian inventor, architect and professor of architecture. He is best known for the invention of mechanical puzzles including Rubik's Cube, Rubik's Magic, Rubik's Magic: Master Edition, Rubik's Snake and Rubik's
KAGEN SCHAEFER - a puzzle designer and maker living in Denver, Colorado. Kagen is known for high quality wooden puzzle boxes, often featuring a mathematical or pattern theme. Kagen has won awards in the annual Nob Yoshigahara Puzzle Design Competition on multiple occasions, including the first puzzle to win two awards in the same competition (Puzzler's Award and the Jury First prize for the Block Box).
MIGUEL BERROCAL (1933-2006) - an artist known for his puzzle sculptures. He was born in Villanueva de Algaidas, Málaga, Spain, and married Maria Cristina de Bragança (the daughter of Portuguese throne pretender Maria Pia de Saxe-Coburgo e Bragança). He received formal training in mathematics, architecture, chemistry, and art. Berrocal ran a foundry in Negrar near Verona, Italy. Berrocal made sculpture puzzles, some gigantic, some suitable for assembling on a table top.
JERRY SLOCUM - an American historian, collector and author specializing on the field of mechanical puzzles. Prior to retiring and dedicating his life to puzzles, he worked as an engineer at Hughes Aircraft. His personal puzzle collection, numbering over 40,000 mechanical puzzles and 4,500 books, is believed to be the world's largest.
SCOTT KIM - an American puzzle and computer game designer, artist, and author. He started writing an occasional "Boggler" column for Discover magazine in 1990, and became an exclusive columnist in 1999, and created hundreds of other puzzles for magazines such as Scientific American and Games, as well as thousands of puzzles for computer games. He was the holder of the Harold Keables chair at Iolani School in 2008.
The maths writer Martin Gardner, who died in is said to have turned dozens of innocent youngsters into professors - and vice-versa.
EDWARD HORDERN (1941-2000) - the world's leading authority on sliding block puzzles, and was renowned for his puzzle solving abilities. Hordern had an extensive mechanical puzzle collection and was an author on the topic of mechanical puzzles. His best known book is "Sliding Piece Puzzles", originally published in 1986 by Oxford University Press. In 1993, Hordern edited, corrected and privately published a Centenary Edition of the famous "Puzzles Old & New" by Professor Hoffmann.
STEWART T. COFFIN - has been designing intriguing geometric puzzles and making them in his workshop since the early 1970s, creating more than 200 original designs. The craftmanship and originaliy of his designs have won him a devoted following among puzzle enthusiasts and collectors throughout the world.
BILL CUTLER - an American mathematician and systems analyst, living in Illinois USA. His main interest and area of research is in Burr puzzles and Packing (box-filling) puzzles. He published articles in the Journal of Recreational Mathematics on the Six-Piece Burr and published two booklets, Holey 6-Piece Burr! and A Computer Analysis of All 6-Piece Burrs. Cutler has designed a wide variety of burrs in addition to his well-known work on the Six-Piece Burr.
AKIO KAMEI - has taken the beautiful and traditional Japanese secret boxes to a new and higher level. His original and ingenious designs often require the solver to use the principles of physics to open them. The exquisite craftsmanship and beautiful woods make each one a work of art. Puzzle collectors from all over the world eagerly await each new Kamei puzzle. His trick boxes are the best that the world of puzzles has ever seen.