Hannah Galvez-Arango Stanford University ""

What follows is a copy of part of a senior essay, written byVincenzo Sandrone during the course of his studies at theUniversity of Technology in Sydney. We reprint it herewith his permission. Copyright 1997.

James Manley Emerson College

The goal of Sudoku is to fill in a 9×9 grid with digits so that each column, row, and 3×3 section contain the numbers between 1 to 9. At the beginning of the game, the 9×9 grid will have some of the squares filled in. Your job is to use logic to fill in the missing digits and complete the grid. Don’t forget, a move is incorrect if:

Elijah Punzal University of California, Irvine "" ""

The popular Japanese puzzle game Sudoku is based on the logical placement of numbers. An online game of logic, Sudoku doesn’t require any calculation nor special math skills; all that is needed are brains and concentration.