Basic NumberPlace RulesEnter a digit from 1-9 into the blank square of the grid, with the following constraints applying.
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Every row and column must contain one instance of each digit. Every 3x3 block of the 9x9 grid must contain one instance of each number. |
How to use this applicationEntering a number is easy! Just tap on the grid and then on the number pad that will appear.
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| *Touch on the panel to open the help function, which will give you basic instructions for use of this application. | |
Extra Functions
This applications comes with various supplementary functions, that help you solve the puzzles.
| Note function |
This enables you to make a note of several numbers in the blank squares of the grid. |
| Saving function |
The progress of each puzzle can be saved to let you resume the game at any time. |
| No-repeat function |
This function tells you if any duplicated digits are in the same row, column or 3x3 block |
| Input constraint function |
It will restrict the input of numerals to prevent more than 9 identical figures being chosen in total. |
| Automatic note deleting function |
When a solution is entered it will delete the notes in the same row/column and 3x3 blocks automatically. |
| Play time display function |
.Shows you the time you have been attempting to solve the puzzle. *Average clear-time is displayed at the record display for each level. |
| Constant backlight function |
The backlight will not go off even if the screen is left untouched while thinking. (only applied during the game) |
Other supplementary functions are available such as "go back," " restart" and "delete all notes."
*except for certain functions, supplementary functions can be switched on and off in the "settings" menu of the application.








