Extended Sudoku model George Efstathiou An interactive model of a sudoku puzzle The extended Sudoku model is an extension of K. King's model made with the use of three different DNs, SCOUT, C-Graph and EDEN. The model is not primarily designed to provide an automated way of solving the puzzle but to give insight in the solving process. It attempts to do this by visualising the puzzle constraints in terms of bipartite matching problems. 2006 6 sudokuEfstathiou2006 model tkeden %eden %scout %donald screenshot.gif game education YES