All about the classic sudoku puzzle where you must place 1-9 once in each row, column and 3x3 box of the grid. Play a new puzzle every day online at the Clarity Media Puzzle Connoisseur
logical deduction - 9x9 Sudoku Puzzle - Puzzling Stack Exchange
Sudoku #1051 and #1052 (Medium) - Free Printable Puzzles
How to Solve Sudoku Puzzles (beginner and Advanced) : 22 Steps (with Pictures) - Instructables
Sudoku Puzzle Game Book Volume 1
The Math Behind Sudoku: Solving Strategy
Sudoku - Easy
Generating & Solving Sudoku Puzzles, by Daniel Sasse
Example of Sudoku puzzle. Download Scientific Diagram
Sudoku, Logic & Strategy Game