Research on Construting of Sudoku Puzzles

Abstract

Sudoku is generally considered a good way of training one’s thinking. Based on the first puzzle calculated randomly and satisfying metrics, this paper adopts the comparative deletion algorithm to obtain the unique Sudoku the first puzzle thus constructs Sudoku game bank. The algorithm constructs nine ${\emph\bf TG_i}$ in accordance with the first puzzle. After finding the first key grid, the possible point is decreased in the ${\emph\bf TG_i}$, and another key grid is found. By doing so, the game is made very interesting and attractive.