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Free printable killer sudoku

Killer Sudoku is Sudoku where boxed cages of cells must add up to a printed sum, and no digit can repeat inside a cage. Logic lovers and number-puzzle fans who want more challenge than classic Sudoku often enjoy the extra layer of arithmetic.

Solution page included
Printable Killer Sudoku puzzle page
Download the puzzle (PNG)Download the solutionSave to Pinterest
Peek at the solutionKiller Sudoku solution page

This page offers a free, high-resolution printable puzzle image sized for a 6x9 inch page, plus a matching solution page. Download both as PNG files with no signup, then print and solve.

How to play

  1. Fill the 9x9 grid so each row, column, and 3x3 box contains the digits 1 through 9 once.
  2. Use each cage sum: the cells in a cage must add up to the printed total.
  3. Never repeat a digit inside the same cage, even if standard Sudoku rules would allow it.
  4. Combine cage sums with row, column, and box constraints to place the remaining digits.

Print the PNG at 100% scale on letter or A4 paper with black ink so the 6x9 inch puzzle stays sharp and easy to write on.

Frequently asked questions

Where is the solution or answer key?

The matching solution is included as a second image on this page. Download the answer key PNG with the puzzle, then print it or keep it on screen when you want to check your work.

Is this Killer Sudoku really free to print?

Yes. The puzzle and solution are free PNG downloads with no signup. You may print them for personal use and classroom use. SmartKDP also offers a full puzzle book studio if you want to create entire KDP puzzle books.

Who is Killer Sudoku best for?

Killer Sudoku suits players who already know standard Sudoku and want more depth. Cage sums add arithmetic reasoning, so newcomers may want a few practice grids, while experienced solvers often find it a satisfying step up.

How should I print this puzzle?

Open the high-resolution PNG and print at 100% scale so the 6x9 inch layout stays clear. Use standard paper and black ink for a sharp grid. Turn off fit-to-page if your printer shrinks images by default.

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