Daily Sudoku 

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Note: take a look at the information about the difficulty levels.

All daily items change at midnight GMT. set time zone

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• Complete the grid such that every row, every column, and every 3 x 3 block contains the numbers from 1 to 9.
• Sudoku is a game of logic, and no mathematics is required to solve the puzzles.

Read the help page on Daily Sudoku for the rules, and the techniques potentially required to solve BrainBashers Sudoku.

help

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Keyboard Options

• If you are using a device without a physical keyboard, the on-screen keyboard is numeric, and 0 = auto-pencil marks (which can be disabled). If you prefer to use the default, non-numeric keyboard, you can select the option below the puzzle, and 0 ≠ auto-pencil marks.
• 'add / remove' - allows you to add / remove characters, entering the same character again will remove it (by removing all duplicates), and the contents are sorted.

Pencil Marks

• What is a pencil mark? Pencil marks can help you keep track of your own thinking, simply enter more than one digit / letter into each square, just like you might do if you were using pen and paper.
• The size of the digits / letters is smaller when there is more than one digit / letter in a square.
• A square might contain more pencil mark digits / letters than can be shown.

Usage (if supported by your device)

• a or 0 = auto-pencil marks (or click 'pencil')
• p = show a pinned square
• CTRL + arrows = move around the grid
• SHIFT + digit = highlight all squares with that digit
• SHIFT + 0 = clear all highlights
  
  
• 'squares with' highlights all squares with that number as a pencil mark.

Uniqueness

• This puzzle has exactly one correct answer.
• No guesses are ever required.
• Double-check alternative answers carefully, and then recheck the rules.

Checking

• Once you have started the puzzle, if you click 'check' the system will check for single-digit squares that don't match the answer (squares with pencil marks are not checked).
• You have to select 'show mistakes' to see the mistakes.

Printing

• Only BrainBashers Sudoku can be printed.