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Calcudoku size:4×45×56×67×78×86×6Killer SudokuSudoku
8 Aug 2012   Show solution   Rating: Points: 3 (solved 2 time(s) so far)

You can solve the puzzle using the number + arrow keys, or the mouse. Use shift + number to toggle guesses, the space bar to clear a cell, and 'backspace' for undo. Press '=' to highlight the number in a cell.

A Killer Sudoku is the same as a Calcudoku puzzle, except:

  • the operator is always + (and not shown)
  • every 3×3 box has the numbers 1..9 exactly once
  • a cage also can not have duplicate numbers (!)

You can also solve the puzzles on the iPhone/iPod Touch/iPad and the Kindle 3.

The last 20 solved puzzles (       = by subscriber):total
All puzzles published on this site are © Patrick Min. Send your ideas and suggestions to

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