SuperDoku notepad

SuperDoku's notepad is accessed by clicking on the notepad button  to open a new window to the right of the puzzle window. This is a copy of the puzzle grid which you can annotate with "pencil marks" to show which values are possible for each square. You can choose the colours used for "possible" and "impossible" values in the Choices window.

[Screenshot of notepad window]

Editing the pencil marks

When you first open a notepad for a puzzle all the marks will be set to "possible" by default. In the Choices window you can choose to have all marks set to "impossible" if you prefer, or have them set automatically according to the values present in the grid.

Mouse method: Click with Adjust on values to toggle them between "possible" and "impossible".

Keyboard method: First click with Select on a square to select it, then you can press appropriate keys to toggle the values between "possible" and "impossible". Press Space, Delete or Ctrl-U to set all the values in the current square to "impossible". You can use the cursor keys to change which square is selected. You can press Ctrl-Tab to switch the cursor between the main window and the notepad.

Notepad tools

The following tools are accessible from the notepad window's toolbar and from the menu:


Update marks from grid / Update marks automatically
Use the information in the grid to show for each square which values do not already appear in the same row, column or block. If you are solving a Killer puzzle, then values which are impossible for the marked area are also eliminated.
Click on the tool with Adjust or choose Update marks automatically to have the pencil marks updated in this way each time you alter the puzzle grid.

Clear all marks / Set all marks
Click with Select on the tool or choose Clear all marks to "rub out", i.e. mark as impossible, all values for all empty squares.
Click with Adjust or choose Set all marks to mark all values as possible for all empty squares.

Transfer single values to puzzle
For any square in the notepad where just a single value has been marked possible, clicking on this tool will enter that value in the puzzle grid.


+ or -

Zoom
Click with Select to increase the size of the grid and with Adjust to decrease it.


F1

Help
Open this help page.


Main SuperDoku help page