This page explains how to complete Sudoku interactive puzzles.
Sudoku puzzles can be played interactively on the computer, offering many features and advantages compared to pencil and paper. This section explains everything about how to play Sudoku Interactive.
Placing and deleting numbers (Keyboard: numerical keys)
Sudoku Interactive is played by placing numbers in a grid. Click mouse on the desired square to open dial pad and then click on the desired number. To remove a number, repeat the above using X at the bottom of the dial pad. Numbers can also be placed by pointing mouse on the desired square and then typing with the keyboard.
Using pencilmarks (Keyboard: numerical keys)
Sudoku Interactive also supports pencilmarks to help solve hard puzzles. Click mouse on the desired pencilmark square to open dial pad and then click on the desired number. To remove a pencilmark, repeat the above using X at the bottom of the dial pad. Pencilmarks can also be placed by pointing mouse on the desired pencilmark square and then typing with the keyboard.
Selecting numbers
Selecting numbers is only needed when the Highlight selected number or the Highlight excluded squares preferences are used. To change the selected number, use mouse wheel, or spacebar, or click on a given (original) number in the puzzle.
Toolbar
All game functions are accessed through the toolbar. For some toolbar buttons, keyboard shortcut keys are also available as listed below.
Zoom in
Enlarge small puzzles for best viewing on your screen.
Zoom out
Reduce large puzzles for best fit on your screen.
Undo (Keyboard: U)
Go back as many steps in the game as you want.
Redo (Keyboard: R)
Go forward after using Undo as many steps as you want.
Restart puzzle
Restart puzzle to solve from the beginning.
Check puzzle (Keyboard: C)
Check all filled and blanked squares for errors.
Clear all pencilmarks
Clear all pencilmarks placed in the grid.
Progress
Show elapsed solving time.
Show solution
Show solution of the puzzle. Using this button will also end the game.
Preferences
Open Preferences dialog box. New preferences will be automatically saved on the computer.
- Show conflicts: Check this box to automatically show conflicting number instances during the game. A conflicting number means it already exists in the same row, column or box.
- Highlight selected number: Check this box to highlight squares in the puzzle which contain the selected number.
- Highlight excluded squares: Check this box to highlight squares into which the selected number cannot be placed.
- Font color: Select color of the placed numbers.
About
Open About dialog box to see puzzle size, difficulty, ID, title and other information.
Help
Open Sudoku Interactive page you are reading now.
Print options
Open Print dialog box. New print options will be automatically saved on the computer.
- Puzzle: Select to print puzzle.
- Solution: Select to print solution.
- Current state: Select to print current solution state.
Scaling
- Preferred image scale: Reduce or enlarge printout.
- Attempt to reduce to page: Check this box to fit large puzzles on a single page. When this box is unchecked, large puzzles will print in multiple pages according to selected scaling.
- Attempt to enlarge to page: Check this box to fit small puzzles on a whole page. When this box is unchecked, small puzzles will print according to selected scaling.
- Select optimal orientation: Check this box to automatically select puzzle orientation.
Save puzzle (Keyboard: S)
Save current state of the puzzle.
Logic Puzzles are provided courtesy of www.conceptispuzzles.com.