Gaston Tarry (September 27, 1843  June 21, 1913) was a French mathematician. Born in Villefranche de Rouergue, Aveyron, he studied mathematics at high school before joining the civil service in Algeria. He pursued mathematics as an amateur, his most famous achievement being his confirmation in 1901 of Leonhard Euler's conjecture that no 6×6 GraecoLatin square was possible.[1][2] See also * Tetramagic square
1. ^ From Latin Squares to Sudoku:A History of Magic Numbers
* O'Connor, John J.; Robertson, Edmund F., "Gaston Tarry", MacTutor History of Mathematics archive, University of St Andrews, http://wwwhistory.mcs.standrews.ac.uk/Biographies/Tarry.html . Retrieved from "http://en.wikipedia.org/"

