Free printable sudoku puzzles
Prefer pencil and paper? Every week we publish four free printable puzzle sheets as PDF — one for each of our puzzle families. Each sheet holds four puzzles from easy to hard, with the solutions on the last page. They are black and white, made for A4 and US Letter, and come from the same engine as the site: every puzzle is proven to have exactly one solution.
This week's sheets
Chaos sudoku
Classic 9×9 sudoku rules, but the nine regions are irregular jigsaw shapes instead of 3×3 boxes — you read them from the thick borders. What is chaos sudoku?
Thermo sudoku
A normal 9×9 grid with thermometers drawn on it: along each thermometer the digits must strictly increase from the bulb to the tip. What is thermo sudoku?
Kropki sudoku
Black and white dots between cells reveal how neighbours relate: black means one is double the other, white means they are consecutive — and no dot means neither. What is kropki sudoku?
Calcudoku
No given digits at all: fill a 4×4 or 6×6 grid where every outlined cage shows the sum, difference, product or quotient of its cells. What is calcudoku?
How the sheets work
A new set appears every Monday, and everyone in the world gets the same sheets that week — so you can race a friend on paper. The links above always point to the current week's sheets; your browser opens the PDF with a print button. Print at 100% or “fit to page”: the sheets are pure black and white, so they are easy on your printer's ink.
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