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SuperDoku tools |
The keyboard
Your main tool for solving Sudoku puzzles is the keyboard. Simply type values into squares, overtype to change a value or clear it by pressing Delete or Space. SuperDoku will not allow you to enter a value which is already in another square in the same row, column or block (unless you choose this option in the Choices window), or to alter values in the original grid.
Use the cursor keys or mouse to move the caret around the grid. Holding down Shift while pressing a cursor key will move to the next block of squares rather than just one square.
Those tools which are most useful while you are trying to solve puzzles for yourself have keyboard shortcuts as detailed below. |
The toolbar
The following tools are accessible from the puzzle toolbar and from the main menu: |
 F2 |
New puzzle
Open the puzzle creation window, allowing you to select grid size and difficulty. Also allows you to create blank grids for you to fill in with a puzzle of your choice. |
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Load puzzle
Open a menu of previously saved puzzles for you to select from. Also allows you to delete such puzzles. In the Choices window you can opt to have saved puzzles deleted once they have been solved by the user (rather than the Solver tool). |
 Ctrl-F3 |
Export Draw file
Open the Draw export window, allowing you to save the puzzle as a Draw file, either to the Filer or directly into Draw. Print out individual puzzles from Draw, or compile several into a booklet using your favourite RISC OS software for printing out to keep you entertained while you are away from your computer. |
 F3 |
Save puzzle
Open the puzzle save box, allowing you to save the puzzle in its current state or in its original state. Solved puzzles may not be saved as there is no point in keeping them in that state. |
 F5 |
Give hint
The caret will be placed in a square which you should be able to solve, and other blank squares on the grid may be highlighted. You should look at the highlighted squares to work out what value to put in the square with the caret. If you press the hint button twice you may get some extra help. Please note that the hint tool uses the values already filled in in order to suggest squares for solving, so if you have already made a mistake you may get hints which lead you to enter further incorrect numbers. |
 Ctrl-F5 |
Square/killer area analyser
This tool toggles on and off the display in the bar below the grid, showing which values are possible solutions for the square under the mouse pointer. If you move the caret using the keyboard, the square analyser will show the possible solutions for the square containing the caret, until you start using the mouse again. For a Killer puzzle, all possible sets of values for the current killer area will be shown below the single square analysis. Those which conflict with existing values in the area will be greyed out. You can choose to have the killer area analysis without the single square analysis by adjust-clicking on the tool when it is selected or pressing Ctrl-Shift-F5. |
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Solver
Toggles open or closed the Sudoku solver window, which will solve the puzzle for you (if it can!) using methods of your choice. |
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Notepad
Toggles open or closed the notepad window, where you can jot down possible values for empty squares. |
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Fix grid
This tool enables you fix the current grid so that you cannot alter any of the values currently entered. Fixed entries are shown in black; you may choose to have a different colour for other entries in the Choices window. Fixed grids may be unfixed to allow editing of all values. Click with Select to fix and with Adjust to unfix the whole of a grid. |
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Reset puzzle
This tool clears all the values in the puzzle which are not in a fixed grid. |
 F8 |
Undo
Undo your last alteration. You can undo and redo as many changes as you like. |
 F9 |
Redo
Redo the last thing you undid. |
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Puzzle design editor
This tool toggles on and off design mode for Killer puzzles and Comparison puzzles. When you have finished drawing out the groups of squares in a blank killer puzzle or setting the direction of the comparison arrows in a blank comparison puzzle, click on this tool to exit design mode and begin entering values in the puzzle. If you wish to alter the design of an existing puzzle simply click on this tool to enter design mode. |
 + or - |
Zoom
Click with Select to increase the size of the grid and with Adjust to decrease it. |
 F1 |
Help
Open the main SuperDoku help page. |