Sudoku (HTML5)

Sudoku is a puzzle game which uses numbers that are placed on a grid which consists of nine 3 x 3 blocks, with a total of 72 individual cells. Complete the sudoku puzzle by placing the numbers 1 through 9 in the grid around the 25-35 clue numbers which are automatically placed on the board to get you started. Each number can only appear once in a row, column and block. If the number 1 is in the upper left corner, then no more 1s can be placed in the uppermost row, the leftmost column or upper left block of 9 cells. Click on an unmarked space and then click a number to set the number. Red numbers will show conflicts.