2.Press the location where you want to enter a number, and then press the number you would like to enter.
An underlined number is added to the screen.
3.Continue until all of the initial numbers are in place.
Remember the rules of number placement: Each number from 1 to 9 can only occur once in every horizontal row, vertical column, and 3 x 3 block.
If you press the wrong number, press 
to delete it. Press and hold 
for 3 seconds to exit the puzzle solver.
Note: The more numbers provided at the beginning of a puzzle, the easier it is to solve.
15