* The reinforcement of the question making engine.
* Revised it to display the best time every level.
* Added a infinite button (display an candidate numbers)
* Revised it to be able to input nine candidate numbers.
* Revised the design of the cursor.
* Revised it to put it out when pushed the button of the value same as input numerical value.
* Coped with 10 key, cross key input.
* Changed a help function.