Fun Sudoku Fever

Sudoku Instructions:
To complete the sudoku puzzle, you must place the numbers 1 to 9 in the grid. Each number can only appear once in a row, column and block. So 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.
To place a number, click on the number using the keypad to the right, or press the number key on your keyboard. Then click on a cell in the sudoku grid. You can use the X, or number key 0, to clear cells. You can use the undo button to undo your last move. The color button switches the color you are using to fill in the numbers. Double-click the color button to set all the numbers to the default color. This is to help you play, and does not affect the outcome. The save button will save the game and allow you to come back later to finish.
Every time you start a new game of Sudoku, a random grid is generated that has a single solution. Then 25-35 clues are placed on the board to get you started.