The sudoku board game is played on a 9x9 grid, divided into rows, columns, and 9 blocks of 3x3 squares. The objective is to fill the empty squares with the digits 1-9, so that each row, column, and block contains each of the digits 1-9 (and hence, it is not possible for any digit to appear twice in the same row, column or block). Features: - character based (curses) interface; - cross-platform (Minix, Unix, Windows) with full source code (ANSI C); - generates hints upon request; - classification of board difficulty (very easy, easy, medium, hard or fiendish); - generation of new boards; - easy entry of boards published in newspapers, internet, etc...; - multiple output formats (text,csv,html,postscript). WWW: http://www.laurasia.com.au/sudoku/