Sudoku is a number placing puzzle based on a 9x9 grid with several given numbers. The object is to place the numbers 1 to 9 in the empty squares so that each row, each column, and each 3x3 box contains the same number only once. A Flash tutorial appears below.
Designed as a lively educational program, Conceptis Sudoku tutorial provides a quick and easy way of understanding various classic Sudoku solving techniques. Using Flash animation, the 111-step movie presents a classic 9x9 Sudoku puzzle being solved from beginning to end, one-step at a time.