Printable Killer Sudoku

Generate print-ready Killer Sudoku puzzles with cage borders and sum clues, optimised for black-and-white printing. Pick a difficulty, choose how many grids per page, and hit print — solutions optional.

Configure Your Printout

Tips for Printing Killer Sudoku

Cages print as dashed borders with the sum in the top-left cell — no colour needed.
Print at 100% scale so cage sums stay legible.
1 per page gives the most room for pencil-mark combinations.
Tick "Include solutions page" to print answers on a separate sheet.

Prefer playing online? The Killer Sudoku hub has a timer, hints and leaderboards.

Play Killer Sudoku Online

Browse printable Killer Sudoku by difficulty

Easy Killer Sudoku Printable 26 given digits · 10–25 min View puzzles → Medium Killer Sudoku Printable 18 given digits · 25–50 min View puzzles → Hard Killer Sudoku Printable 8 given digits · 45–90 min View puzzles → Expert Killer Sudoku Printable No given digits · 60–120+ min View puzzles →

Killer Sudoku on Paper - What Makes It Different

Killer Sudoku replaces most (or all) of the given digits with cages: dashed outlines around groups of cells, each labelled with the sum its digits must reach. No digit may repeat inside a cage, and every standard Sudoku rule still applies. On paper this shines — you have unlimited space to jot cage combinations in the margins, something no app can match.

Difficulty Guide for Printable Killer Sudoku

Level	Givens	Cage profile	Solve time
Easy	26 given digits	Mostly 2-cell cages, a few 3-cell	10–25 min
Medium	18 given digits	Balanced mix of 2–4 cell cages	25–50 min
Hard	8 given digits	Larger 3–5 cell cages dominate	45–90 min
Expert	No given digits	Large cages, rare sum combinations	60–120+ min

How Cages Appear on the Printout

Each cage is drawn with a dashed inner border, set slightly inside the solid grid lines so the two never blend together — even on a basic mono laser printer. The cage's target sum sits in small bold type in the top-left cell of the cage, exactly where puzzle books put it.

Solid thin lines are cell borders, solid thick lines are 3×3 box borders, and dashed lines are cages. Three line styles, zero ambiguity, no ink-hungry shading.

Solving Killer Sudoku on Paper - Quick Primer

Start with forced cages

Some sums admit only one combination: a 2-cell cage totalling 3 must be {1,2}; a 3-cell cage totalling 24 must be {7,8,9}. Pencil these candidates in first — they behave like extra given digits. Our guide to forced cage combinations lists every one worth memorising.

Then apply the 45 rule

Every row, column and 3×3 box sums to 45. When a set of cages almost fills a unit, subtract their sums from 45 to pin down the leftover cell. The 45 rule explained walks through worked examples — it is the single most important Killer technique.

More ways to play

Prefer playing online? Killer Sudoku online adds a timer, unlimited undo, hints and leaderboard scoring. Want classic printable Sudoku without cages? Head to our printable Sudoku generator with six difficulty levels. And if you're new to cage logic, the Killer Sudoku FAQ covers the rules from scratch.

Play Killer Online Classic Printable Sudoku Killer Sudoku FAQ